Fast-Twist Swift in works; Need Data for Heavies 22-250 AI?

efw · May 13, 2013

I have a 1-in-8" twisted custom Mauser chambered to Swift on it's way but am having a hard time finding data.

Specifically looking for 68 HPBT Horn, 69 SMK, and my intended #1, the 75 gr AMax.

I am told the Swift and 22-250 AI have similar enough capacity that data for that cartridge will give me a good starting place so if you have any of that I'd be grateful.

I am hoping to score some NCC 80s from SPS to try out at some point...

DrMike · May 13, 2013

Here is some data. What powder did you have in mind for the Swift?

Code:

Cartridge          : .220 Swift
Bullet             : .224, 68, Hornady BTHP M 2278
Useable Case Capaci: 42.361 grain H2O = 2.750 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length      : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 61500 psi, or 424 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

5 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Norma MRP                          110.0     44.8     2.90    3572    96.5    60813   15071   0.943  ! Near Maximum !
Elcho 17                            99.3     40.7     2.63    3566    99.9    61500   13922   0.937  ! Near Maximum !
Alliant Reloder-17                  99.3     40.7     2.63    3566    99.9    61500   13922   0.937  ! Near Maximum !
Somchem S365                       106.5     41.4     2.68    3539   100.0    61500   13335   0.947  ! Near Maximum !
IMR 7828 SSC                       109.9     44.1     2.86    3523    92.7    61500   14452   0.932  ! Near Maximum !
PB Clermont PCL 511                100.6     41.9     2.71    3508    97.7    61500   13878   0.944  ! Near Maximum !
Ramshot Hunter                     104.0     41.9     2.72    3506    97.7    61500   13857   0.945  ! Near Maximum !
Winchester 760                      98.2     40.6     2.63    3500    96.8    61500   13831   0.947  ! Near Maximum !
Hodgdon H414                        98.2     40.6     2.63    3500    96.8    61500   13831   0.947  ! Near Maximum !
Norma URP                          103.6     40.0     2.59    3496    99.0    61500   13514   0.950  ! Near Maximum !
Bofors RP19 ~approximation         103.6     40.0     2.59    3495    99.0    61500   13510   0.950  ! Near Maximum !
Alliant Reloder-19                 108.5     42.4     2.74    3494    94.9    61500   13919   0.940  ! Near Maximum !
Accurate 4350                      102.9     40.2     2.60    3492    99.0    61500   13547   0.965  ! Near Maximum !
Vihtavuori N550                    100.5     40.1     2.60    3491    98.8    61500   13622   0.955  ! Near Maximum !
ADI AR 2209                        107.6     41.8     2.71    3489    94.6    61500   13789   0.934  ! Near Maximum !
Bofors RP14 ~approximation         109.2     42.6     2.76    3485    94.9    61500   13806   0.941  ! Near Maximum !
ADI AR 2213                        110.0     43.4     2.81    3478    92.2    60169   14143   0.941  ! Near Maximum !
Vihtavuori N560                    110.0     43.9     2.84    3478    91.4    57668   14647   0.966  ! Near Maximum !
IMR 4831                           108.7     40.6     2.63    3475    99.1    61500   13263   0.958  ! Near Maximum !
IMR 4895                            93.3     36.4     2.36    3469    99.7    61500   13022   0.956  ! Near Maximum !
Norma 204                          102.7     41.4     2.68    3465    94.6    61500   13522   0.941  ! Near Maximum !
Bofors RP4 ~approximation          106.1     41.4     2.68    3465    94.6    61500   13522   0.941  ! Near Maximum !
Raufoss RA4                        106.1     41.4     2.68    3465    94.6    61500   13522   0.941  ! Near Maximum !
Hodgdon Hybrid 100V                106.4     40.2     2.60    3465    99.9    61500   12630   0.947  ! Near Maximum !
Alliant Reloder-15                  94.1     36.7     2.38    3458    99.4    61500   12945   0.956  ! Near Maximum !
Raufoss RA11                        94.1     36.7     2.38    3458    99.4    61500   12945   0.956  ! Near Maximum !
Bofors RP11 ~approximation          94.1     36.7     2.38    3458    99.4    61500   12945   0.956  ! Near Maximum !
Norma 203B                          94.6     36.9     2.39    3457    99.7    61500   12868   0.957  ! Near Maximum !
Somchem S385                       108.7     42.9     2.78    3456    96.1    61500   13459   0.957  ! Near Maximum !
Alliant Reloder-22                 110.0     43.4     2.81    3455    93.8    56860   14321   0.975  ! Near Maximum !
Raufoss RA15                       110.0     43.4     2.81    3455    93.8    56860   14321   0.975  ! Near Maximum !
Bofors RP5/NP ~approximation       110.0     43.4     2.81    3455    93.8    56860   14321   0.975  ! Near Maximum !
Bofors RP4 NT ~approximation       103.6     41.1     2.66    3448    96.5    61500   13250   0.952  ! Near Maximum !
Norma 203 old                       96.0     37.9     2.45    3447    99.9    61500   12710   0.968  ! Near Maximum !
Bofors RP3                          96.0     37.9     2.45    3447    99.9    61500   12710   0.968  ! Near Maximum !
Ramshot Magnum                     110.0     46.8     3.03    3446    94.6    58924   13817   0.954  ! Near Maximum !
Hodgdon H4831 SC                   109.2     43.1     2.79    3445    92.0    61500   13402   0.938  ! Near Maximum !
Accurate MAGPRO                    110.0     45.7     2.96    3444    89.1    56855   14473   0.976  ! Near Maximum !
Hodgdon H380                        95.4     38.1     2.47    3442    98.7    61500   12971   0.959  ! Near Maximum !
Rottweil R903                       98.1     37.9     2.46    3441    99.9    61500   12624   0.968  ! Near Maximum !
Somchem S355                        98.1     37.5     2.43    3434    99.8    61500   12582   0.963  ! Near Maximum !
Lovex S070                         102.8     39.7     2.57    3433    97.0    61500   13103   0.961  ! Near Maximum !
Winchester Supreme 780             106.5     43.9     2.84    3433    94.6    61500   13127   0.942  ! Near Maximum !
Hodgdon H4350                      105.5     40.3     2.61    3428    96.1    61500   12946   0.946  ! Near Maximum !
IMR 4350                           103.5     40.2     2.61    3428    96.2    61500   12934   0.946  ! Near Maximum !
Elcho TR140 - preliminary data      94.9     38.3     2.48    3425    98.8    61500   12657   0.955  ! Near Maximum !
Rottweil R904                      106.7     41.1     2.66    3424    93.3    61500   13066   0.944  ! Near Maximum !
Lovex D073.6                        91.0     36.6     2.37    3419   100.0    61500   11976   0.970  ! Near Maximum !
Accurate 4064                       95.7     36.5     2.37    3414   100.0    61500   11964   0.987  ! Near Maximum !
Lovex S065                         101.5     38.8     2.51    3414    98.0    61500   12729   0.961  ! Near Maximum !
SNPE Vectan SP 7                    90.0     37.7     2.44    3412    98.6    61500   12545   0.961  ! Near Maximum !
Rottweil R907                      100.2     38.4     2.49    3405    96.1    61500   12767   0.956  ! Near Maximum !
Bofors RP7                         100.2     38.4     2.49    3405    96.1    61500   12767   0.956  ! Near Maximum !
IMR 4007 SSC                        97.0     38.4     2.49    3404    96.1    61500   12758   0.956  ! Near Maximum !
Accurate 2495                       90.1     34.4     2.23    3392   100.0    61500   11521   0.991  ! Near Maximum !
Rottweil R902                       94.0     35.4     2.29    3392   100.0    61500   11925   0.966  ! Near Maximum !
Somchem S361                       105.3     43.8     2.84    3376    92.2    61500   12676   0.955  ! Near Maximum !
Rottweil R901                       90.2     33.5     2.17    3374   100.0    61500   11491   0.973  ! Near Maximum !
Rottweil R905                      110.0     42.6     2.76    3367    90.6    54960   13536   0.991  ! Near Maximum !
Accurate 3100                      110.0     43.0     2.78    3365    96.7    56538   13073   1.005  ! Near Maximum !
Accurate 2700                       96.9     39.5     2.56    3348    95.9    61500   12028   0.958  ! Near Maximum !
SNPE Vectan SP 12                  110.0     45.9     2.97    3347    90.3    53036   13969   1.000  ! Near Maximum !
Bofors RP15                        110.0     42.5     2.75    3343    92.0    51659   13864   1.020
Winchester WXR                     110.0     42.5     2.75    3343    92.0    51659   13864   1.020
PB Clermont PCL 517                110.0     45.9     2.97    3339    90.0    52739   13943   1.003
Hodgdon H4831                      110.0     41.7     2.70    3312    90.0    54541   12878   0.992  ! Near Maximum !
Bofors RP5 NT ~approximation       110.0     43.8     2.84    3292    87.0    53615   13049   0.999  ! Near Maximum !
IMR 7828                           110.0     41.7     2.70    3288    88.9    50248   13480   1.025
ADI AP 2214                        110.0     44.6     2.89    3287    89.1    52597   13259   1.004
Vihtavuori N165                    110.0     42.5     2.75    3285    93.5    53356   12553   1.010  ! Near Maximum !
Vihtavuori N160                    110.0     41.2     2.67    3273    91.3    54556   12311   0.999  ! Near Maximum !

Code:

Cartridge          : .220 Swift
Bullet             : .224, 68, Hornady BTHP M 2278
Useable Case Capaci: 42.361 grain H2O = 2.750 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   79    32.48   2815    1196   31153  11170     91.4    1.276
-18.0   81    33.29   2889    1260   33299  11545     92.9    1.243
-16.0   83    34.10   2964    1326   35601  11903     94.2    1.211
-14.0   85    34.92   3039    1394   38064  12243     95.4    1.174
-12.0   87    35.73   3114    1464   40706  12561     96.4    1.137
-10.0   89    36.54   3189    1535   43537  12856     97.4    1.101
-08.0   91    37.35   3264    1608   46579  13125     98.2    1.066
-06.0   93    38.16   3338    1683   49844  13367     98.8    1.033
-04.0   95    38.98   3413    1759   53355  13580     99.3    1.000  ! Near Maximum !
-02.0   97    39.79   3487    1836   57134  13762     99.7    0.969  ! Near Maximum !
+00.0   99    40.60   3561    1914   61208  13912     99.9    0.939  ! Near Maximum !
+02.0  101    41.41   3633    1993   65601  14028    100.0    0.910  !DANGEROUS LOAD-DO NOT USE!
+04.0  103    42.22   3706    2073   70344  14124    100.0    0.882  !DANGEROUS LOAD-DO NOT USE!
+06.0  105    43.04   3778    2154   75476  14216    100.0    0.855  !DANGEROUS LOAD-DO NOT USE!
+08.0  107    43.85   3849    2236   81037  14302    100.0    0.829  !DANGEROUS LOAD-DO NOT USE!
+10.0  109    44.66   3919    2319   87069  14383    100.0    0.803  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     99    40.60   3720    2089   74823  13366    100.0    0.865  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    40.60   3327    1671   49400  13839     95.7    1.034

DrMike · May 13, 2013

Here is some data with the 75 grain A-Max.

Code:

Cartridge          : .220 Swift
Bullet             : .224, 75, Hornady A-MAX 22792
Useable Case Capaci: 41.434 grain H2O = 2.690 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-17

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   78    31.28   2711    1224   31563  11112     93.4    1.323
-18.0   80    32.06   2781    1288   33715  11460     94.7    1.290
-16.0   82    32.84   2852    1354   36014  11790     95.8    1.257
-14.0   84    33.63   2922    1422   38474  12100     96.8    1.218
-12.0   86    34.41   2992    1491   41106  12388     97.7    1.180
-10.0   88    35.19   3062    1561   43924  12653     98.4    1.143
-08.0   90    35.97   3131    1633   46945  12891     99.0    1.108
-06.0   92    36.75   3201    1706   50183  13103     99.5    1.073
-04.0   94    37.54   3270    1780   53659  13286     99.8    1.040  ! Near Maximum !
-02.0   96    38.32   3338    1856   57392  13438    100.0    1.009  ! Near Maximum !
+00.0   98    39.10   3406    1932   61407  13561    100.0    0.978  ! Near Maximum !
+02.0  100    39.88   3473    2009   65728  13671    100.0    0.948  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    40.66   3540    2087   70383  13776    100.0    0.920  !DANGEROUS LOAD-DO NOT USE!
+06.0  103    41.45   3606    2165   75407  13877    100.0    0.892  !DANGEROUS LOAD-DO NOT USE!
+08.0  105    42.23   3671    2245   80836  13973    100.0    0.866  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    43.01   3737    2325   86707  14065    100.0    0.840  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     98    39.10   3547    2095   74956  13039    100.0    0.903  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    39.10   3195    1700   49509  13693     96.9    1.076

Code:

Cartridge          : .220 Swift
Bullet             : .224, 75, Hornady A-MAX 22792
Useable Case Capaci: 41.434 grain H2O = 2.690 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length      : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 61500 psi, or 424 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

9 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Norma MRP                          108.7     43.3     2.81    3439    97.6    61500   14950   0.977  ! Near Maximum !
Alliant Reloder-17                  97.6     39.1     2.53    3408   100.0    61500   13563   0.977  ! Near Maximum !
Elcho 17                            97.6     39.1     2.53    3408   100.0    61500   13563   0.977  ! Near Maximum !
Vihtavuori N560                    110.0     42.9     2.78    3402    93.7    60941   14837   0.980  ! Near Maximum !
IMR 7828 SSC                       108.3     42.5     2.75    3385    94.2    61500   14386   0.970  ! Near Maximum !
Somchem S365                       104.7     39.8     2.58    3377   100.0    61500   12976   0.989  ! Near Maximum !
Bofors RP5/NP ~approximation       110.0     42.5     2.75    3376    95.9    60187   14441   0.989  ! Near Maximum !
Raufoss RA15                       110.0     42.5     2.75    3376    95.9    60187   14441   0.989  ! Near Maximum !
Alliant Reloder-22                 110.0     42.5     2.75    3376    95.9    60187   14441   0.989  ! Near Maximum !
Accurate MAGPRO                    110.0     44.7     2.89    3373    91.7    60252   14720   0.989  ! Near Maximum !
ADI AR 2213                        109.2     42.1     2.73    3367    94.0    61500   14186   0.970  ! Near Maximum !
Ramshot Magnum                     109.6     45.6     2.96    3359    96.5    61500   13877   0.973  ! Near Maximum !
PB Clermont PCL 511                 99.1     40.3     2.61    3358    98.4    61500   13668   0.985  ! Near Maximum !
Ramshot Hunter                     102.3     40.4     2.62    3356    98.4    61500   13648   0.985  ! Near Maximum !
Hodgdon H414                        96.6     39.0     2.53    3350    97.7    61500   13628   0.987  ! Near Maximum !
Winchester 760                      96.6     39.0     2.53    3350    97.7    61500   13628   0.987  ! Near Maximum !
Alliant Reloder-19                 106.9     40.8     2.64    3348    96.0    61500   13787   0.980  ! Near Maximum !
ADI AR 2209                        106.1     40.3     2.61    3346    95.8    61500   13672   0.973  ! Near Maximum !
Norma URP                          101.9     38.5     2.49    3342    99.5    61500   13244   0.991  ! Near Maximum !
Bofors RP19 ~approximation         101.9     38.5     2.50    3342    99.5    61500   13240   0.991  ! Near Maximum !
Bofors RP14 ~approximation         107.6     41.1     2.66    3340    96.0    61500   13679   0.980  ! Near Maximum !
Vihtavuori N550                     98.9     38.6     2.50    3339    99.4    61500   13362   0.995  ! Near Maximum !
Accurate 4350                      101.2     38.7     2.50    3339    99.5    61500   13264   1.006  ! Near Maximum !
IMR 4831                           106.9     39.1     2.53    3323    99.6    61500   12992   0.999  ! Near Maximum !
Norma 204                          101.2     39.9     2.59    3320    95.7    61500   13393   0.980  ! Near Maximum !
Bofors RP4 ~approximation          104.5     39.9     2.59    3320    95.7    61500   13393   0.980  ! Near Maximum !
Raufoss RA4                        104.5     39.9     2.59    3320    95.7    61500   13393   0.980  ! Near Maximum !
IMR 4895                            91.8     35.0     2.27    3312    99.9    61500   12692   0.997  ! Near Maximum !
Somchem S385                       107.1     41.4     2.68    3311    97.0    61500   13303   0.997  ! Near Maximum !
Hodgdon Hybrid 100V                104.6     38.7     2.51    3309   100.0    61500   12312   0.988  ! Near Maximum !
Hodgdon H4831 SC                   107.8     41.6     2.70    3306    93.4    61500   13340   0.977  ! Near Maximum !
Alliant Reloder-15                  92.6     35.4     2.29    3303    99.8    61500   12638   0.996  ! Near Maximum !
Raufoss RA11                        92.6     35.4     2.29    3303    99.8    61500   12638   0.996  ! Near Maximum !
Bofors RP11 ~approximation          92.6     35.4     2.29    3303    99.8    61500   12638   0.996  ! Near Maximum !
Bofors RP4 NT ~approximation       102.1     39.6     2.56    3301    97.4    61500   13079   0.992  ! Near Maximum !
Norma 203B                          93.0     35.5     2.30    3301    99.9    61500   12548   0.998  ! Near Maximum !
Winchester Supreme 780             105.1     42.3     2.74    3292    95.7    61500   13031   0.982  ! Near Maximum !
Rottweil R905                      110.0     41.7     2.70    3291    93.0    58140   13713   1.006  ! Near Maximum !
Bofors RP3                          94.4     36.4     2.36    3291   100.0    61500   12367   1.010  ! Near Maximum !
Norma 203 old                       94.4     36.4     2.36    3291   100.0    61500   12367   1.010  ! Near Maximum !
Hodgdon H380                        93.9     36.6     2.37    3290    99.2    61500   12718   1.000  ! Near Maximum !
SNPE Vectan SP 12                  110.0     44.8     2.91    3287    93.1    56120   14225   1.013  ! Near Maximum !
Lovex S070                         101.2     38.2     2.48    3286    97.9    61500   12910   1.001  ! Near Maximum !
Rottweil R903                       96.5     36.5     2.36    3286   100.0    61500   12289   1.009  ! Near Maximum !
Accurate 3100                      110.0     42.0     2.72    3285    98.2    60182   13063   1.018  ! Near Maximum !
Hodgdon H4350                      103.9     38.8     2.52    3282    97.0    61500   12785   0.986  ! Near Maximum !
IMR 4350                           102.0     38.7     2.51    3282    97.1    61500   12770   0.986  ! Near Maximum !
Rottweil R904                      105.2     39.6     2.57    3281    94.5    61500   12960   0.983  ! Near Maximum !
PB Clermont PCL 517                110.0     44.8     2.91    3280    92.8    55800   14207   1.015  ! Near Maximum !
Somchem S355                        96.6     36.1     2.34    3279   100.0    61500   12263   1.004  ! Near Maximum !
Elcho TR140 - preliminary data      93.4     36.9     2.39    3274    99.3    61500   12408   0.996  ! Near Maximum !
Bofors RP15                        110.0     41.6     2.69    3270    94.3    54656   14035   1.035  ! Near Maximum !
Winchester WXR                     110.0     41.6     2.69    3270    94.3    54656   14035   1.035  ! Near Maximum !
Lovex S065                         100.0     37.4     2.42    3265    98.7    61500   12511   1.001  ! Near Maximum !
Bofors RP7                          98.7     37.0     2.40    3259    97.1    61500   12597   0.996  ! Near Maximum !
Rottweil R907                       98.7     37.0     2.40    3259    97.1    61500   12597   0.996  ! Near Maximum !
IMR 4007 SSC                        95.6     37.0     2.40    3259    97.1    61500   12588   0.996  ! Near Maximum !
Accurate 4064                       94.0     35.1     2.28    3253   100.0    61500   11616   1.029  ! Near Maximum !
Somchem S361                       103.9     42.3     2.74    3240    93.5    61500   12611   0.994  ! Near Maximum !
Rottweil R902                       92.5     34.1     2.21    3236   100.0    61500   11590   1.007  ! Near Maximum !
Hodgdon H4831                      110.0     40.8     2.65    3234    92.3    57412   13056   1.009  ! Near Maximum !
ADI AP 2214                        110.0     43.6     2.83    3224    92.0    55386   13523   1.019  ! Near Maximum !
IMR 7828                           110.0     40.8     2.65    3220    91.6    52963   13719   1.041
Bofors RP5 NT ~approximation       110.0     42.8     2.78    3219    89.7    56260   13309   1.016  ! Near Maximum !
Vihtavuori N165                    110.0     41.6     2.69    3206    95.5    56440   12648   1.026  ! Near Maximum !
Accurate 2700                       95.6     38.1     2.47    3206    96.9    61500   11880   0.998  ! Near Maximum !
Alliant Reloder-25                 110.0     41.8     2.71    3192    96.7    49224   13922   1.079
Vihtavuori N160                    110.0     40.3     2.61    3190    93.4    57421   12441   1.017  ! Near Maximum !

JD338 · May 13, 2013

Eric

Congratulations on the Swift.
We will have to run her through the paces at the club when you are ready.

JD338

efw · May 13, 2013

Thanks Dr Mike; I was thinkin' RS-Hunter which is a star performer in several other rifles just to KIS and your numbers confirm my choice!

Yeah Jim we'll definitely have to do that! It'll be several months. It's an LR 98 (you're surprised I know

) w/ PAC-Nor 1-in-8" trimmed to 27" topped w/ a Vortex Viper 6-24x 40mm AO and stocked in gaudy Weatherby fashion in curly maple w/ rosewood end/grip caps and hand checkered.

Always wanted a fast .22 CF, love monte carlo styling, and always wanted maple! Whew ha!

DrMike · May 13, 2013

I do not have a fast 22 CF, but the Swift is one that would get my serious consideration.

SJB358 · May 14, 2013

Very cool Eric. A fast twisted 22 CF would be alot of FUN!

338 Ultra · May 16, 2013

efw":x9ritvwx said:
I have a 1-in-8" twisted custom Mauser chambered to Swift on it's way but am having a hard time finding data.

Specifically looking for 68 HPBT Horn, 69 SMK, and my intended #1, the 75 gr AMax.

I am told the Swift and 22-250 AI have similar enough capacity that data for that cartridge will give me a good starting place so if you have any of that I'd be grateful.

I am hoping to score some NCC 80s from SPS to try out at some point...

Well yes and no if you are comparing the Swift to to the 22-250 AI, case capacity is similar but powder burn rates are much different. The Swift will digest slower burning powder than will the 22-250 AI . The AI in the 250 will not show the ususal pressure signs that we are acustomed to look for until you are in the red area. The standard Swift case will on the other hand react as we would expect a standard case to react when pressure is getting up past MAP. I am guessing you have the rifle throated to allow for longer than sammi oal's for your cartridges? If not you are loosing powder space. Not a negative asertion just an observation.

If you can find Norma brass you will not be sorry excellent stuff and more than worth the money Winchester is second and you will have 10-15% culls if you are as anal about brass as I am and remington a very distant third pretty soft brass. If Nosler has 220 swift brass out I would grab it I have no compaints about any of the brass I have used stamped nosler and that includes standar calibers up to ultra mag fire breathers.

Neck size, If you want to make cases last and shoot bug holes neck size. Leave the shoulder of the brass alone until you have no choice but to bump it back a couple of thou to get it to chamber. This will reduce your trimming requirements and help prevent thinning at the case head if you full length resize all the time and trim. Anealing the neck and shoulder area is up to you I use collet dies so this does not present a problem for me as I retire the brass before it needs any heat work.

Your search for powder should start and end at H-4831 with the SC version being better at filling the case. This has been my go too powder for a long time now with bullets of 55 grains and above in old swifty. In the same token RL-19 or RL-22 are other options depending on how finiky you rifle is, but H-4831 has given me the best accuracy, speed and most uniform numbers for a lot of rounds. Primer? pick one I like CCI-200's but you are only burning in the high 30's to mid 40's of powder weight with the bullets you want to shoot so iginition is not going to be an issue.
Sorry but I won't post my loads as they are on the outer edge in my platform and your rifle is unique unto its self quick load data can get you to where you need to be to start.

Good luck with your new shootin stick and welcome to the dark side :mrgreen: