A strange quickload request

J

jason miller

Handloader
Sep 4, 2012
292
0
A friend of mine asked me if I had any load data for a 220 swift with a 77 grain Sierra. Of course, none of my manuals have data for this combo of anything even close to it, and a Google search doesn't come up with any results. There aren't even a lot of results for a 22-250ai with that bullet. Would anyone be so kind and able to run the swift/Sierra through quickload please?
 
Code: 
Cartridge          : .220 Swift
Bullet             : .224, 77, Sierra HPBT MatchK 9377
Useable Case Capaci: 42.001 grain H2O = 2.727 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63570 psi, or 438 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 !

152 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
---------------------------------  -----------------------------------------------------------------
Alliant Reloder-26                 107.7     44.8     2.90    3559   100.0    63570   13849   1.021  ! Near Maximum !
Norma MRP                          108.4     43.8     2.84    3519    98.8    63570   13810   1.021  ! Near Maximum !
ReloadSwiss RS 60                   98.5     40.0     2.59    3500   100.0    63570   12418   1.016  ! Near Maximum !
ReloadSwiss RS 70                  104.6     43.1     2.80    3496    99.1    63570   13400   1.013  ! Near Maximum !
Vihtavuori N560                    110.0     43.5     2.82    3494    95.7    63430   13870   1.021  ! Near Maximum !
Elcho 17                            97.5     39.6     2.56    3473   100.0    63570   12342   1.022  ! Near Maximum !
Alliant Reloder-17                  97.5     39.6     2.56    3473   100.0    63570   12342   1.022  ! Near Maximum !
IMR 7828 SSC                       108.2     43.0     2.79    3470    96.1    63570   13410   1.014  ! Near Maximum !
Accurate MAGPRO                    110.0     45.3     2.93    3469    94.0    62885   13808   1.029  ! Near Maximum !
Alliant Reloder-22                 110.0     43.1     2.79    3464    97.5    62718   13438   1.030  ! Near Maximum !
Raufoss RA15                       110.0     43.1     2.79    3464    97.5    62718   13438   1.030  ! Near Maximum !
Bofors RP5/NP ~approximation       110.0     43.1     2.79    3464    97.5    62718   13438   1.030  ! Near Maximum !
ADI AR 2213                        109.1     42.7     2.77    3451    95.9    63570   13248   1.013  ! Near Maximum !
Ramshot Magnum                     109.4     46.1     2.99    3441    98.1    63570   12848   1.017  ! Near Maximum !
ReloadSwiss RS 62                  100.9     40.9     2.65    3437    99.9    63570   12460   1.040  ! Near Maximum !
Somchem S365                       104.4     40.2     2.60    3437   100.0    63570   11789   1.035  ! Near Maximum !
PB Clermont PCL 511                 98.9     40.8     2.64    3430    99.4    63570   12598   1.030  ! Near Maximum !
Ramshot Hunter                     102.2     40.9     2.65    3429    99.3    63570   12580   1.030  ! Near Maximum !
Alliant Reloder-19                 106.7     41.3     2.68    3425    97.5    63570   12810   1.025  ! Near Maximum !
ADI AR 2209                        106.0     40.8     2.64    3424    97.4    63570   12712   1.018  ! Near Maximum !
Winchester 760                      96.5     39.5     2.56    3424    98.8    63570   12585   1.032  ! Near Maximum !
Hodgdon H414                        96.5     39.5     2.56    3424    98.8    63570   12585   1.032  ! Near Maximum !
Bofors RP14 ~approximation         107.5     41.6     2.70    3417    97.5    63570   12711   1.025  ! Near Maximum !
Norma URP                          101.8     39.0     2.53    3411    99.9    63570   12131   1.036  ! Near Maximum !
Bofors RP19 ~approximation         101.8     39.0     2.53    3411    99.9    63570   12128   1.036  ! Near Maximum !
Vihtavuori N550                     98.8     39.1     2.53    3409    99.9    63570   12265   1.041  ! Near Maximum !
Accurate 4350                      101.0     39.1     2.53    3407    99.9    63570   12116   1.051  ! Near Maximum !
Norma 204                          101.1     40.4     2.62    3396    97.2    63570   12450   1.026  ! Near Maximum !
Bofors RP4 ~approximation          104.4     40.4     2.62    3396    97.2    63570   12450   1.026  ! Near Maximum !
Raufoss RA4                        104.4     40.4     2.62    3396    97.2    63570   12450   1.026  ! Near Maximum !
IMR 4831                           106.8     39.6     2.57    3390   100.0    63570   11878   1.044  ! Near Maximum !
SNPE Vectan SP 11                   95.1     38.0     2.46    3389   100.0    63570   11676   1.035  ! Near Maximum !
SNPE Vectan SP 12                  110.0     45.5     2.95    3387    95.5    58510   13336   1.053  ! Near Maximum !
Somchem S385                       106.9     41.9     2.71    3385    98.3    63570   12305   1.043  ! Near Maximum !
Hodgdon H4831 SC                   107.6     42.1     2.73    3385    95.3    63570   12459   1.022  ! Near Maximum !
Ramshot Big Game                    92.1     38.0     2.46    3382   100.0    63570   11566   1.036  ! Near Maximum !
ReloadSwiss RS 52                   92.6     37.0     2.40    3382   100.0    63570   11371   1.042  ! Near Maximum !
PB Clermont PCL 517                110.0     45.5     2.95    3380    95.3    58172   13328   1.056  ! Near Maximum !
Rottweil R905                      110.0     42.3     2.74    3379    95.0    60544   12829   1.048  ! Near Maximum !
IMR 4895                            91.8     35.5     2.30    3378   100.0    63570   11586   1.042  ! Near Maximum !
Bofors RP4 NT ~approximation       102.0     40.1     2.60    3374    98.6    63570   12099   1.037  ! Near Maximum !
Hodgdon Hybrid 100V                104.5     39.1     2.54    3370   100.0    63570   11187   1.035  ! Near Maximum !
Raufoss RA11                        92.6     35.9     2.32    3369   100.0    63570   11555   1.042  ! Near Maximum !
Alliant Reloder-15                  92.6     35.9     2.32    3369   100.0    63570   11555   1.042  ! Near Maximum !
Bofors RP11 ~approximation          92.6     35.9     2.32    3369   100.0    63570   11555   1.042  ! Near Maximum !
Winchester Supreme 780             104.9     42.8     2.77    3366    97.3    63570   12104   1.028  ! Near Maximum !
Norma 203B                          93.0     36.0     2.33    3366   100.0    63570   11454   1.043  ! Near Maximum !
Accurate 3100                      110.0     42.6     2.76    3366    99.3    62869   12035   1.059  ! Near Maximum !
Hodgdon H380                        93.9     37.1     2.41    3359    99.8    63570   11685   1.045  ! Near Maximum !
Winchester WXR                     110.0     42.1     2.73    3359    96.3    56920   13121   1.077  ! Near Maximum !
Bofors RP15                        110.0     42.1     2.73    3359    96.3    56920   13121   1.077  ! Near Maximum !
Alliant Reloder-23                 110.0     41.7     2.70    3359   100.0    56749   12301   1.080  ! Near Maximum !
Lovex S070                         101.2     38.8     2.51    3358    98.9    63570   11930   1.046  ! Near Maximum !
Rottweil R904                      105.1     40.1     2.60    3357    96.2    63570   12077   1.029  ! Near Maximum !
Hodgdon H4350                      103.9     39.4     2.55    3355    98.3    63570   11848   1.031  ! Near Maximum !
IMR 4350                           102.0     39.3     2.55    3355    98.4    63570   11830   1.032  ! Near Maximum !
Bofors RP3                          94.3     36.9     2.39    3354   100.0    63570   11269   1.055  ! Near Maximum !
Norma 203 old                       94.3     36.9     2.39    3354   100.0    63570   11269   1.055  ! Near Maximum !
Bofors RP7 NT ~approximation        95.8     37.4     2.43    3352    99.0    63570   11567   1.020  ! Near Maximum !
IMR 4320                            94.6     36.0     2.33    3351   100.0    63570   11135   1.028  ! Near Maximum !
PB Clermont PCL 516                 90.6     37.3     2.42    3351    99.8    63570   11545   1.037  ! Near Maximum !
Rottweil R903                       96.4     36.9     2.39    3348   100.0    63570   11186   1.055  ! Near Maximum !
Somchem S355                        96.6     36.6     2.37    3343   100.0    63570   11187   1.049  ! Near Maximum !
Elcho TR140 - preliminary data      93.5     37.4     2.42    3342    99.8    63570   11390   1.041  ! Near Maximum !
SNPE Vectan SP 9                    90.4     36.1     2.34    3341   100.0    63570   11166   1.038  ! Near Maximum !
ReloadSwiss RS 50                   93.8     37.8     2.45    3340    99.1    63570   11598   1.040  ! Near Maximum !
Lovex S065                         100.0     37.9     2.45    3335    99.5    63570   11531   1.046  ! Near Maximum !
Bofors RP7                          98.7     37.5     2.43    3332    98.3    63570   11680   1.041  ! Near Maximum !
Rottweil R907                       98.7     37.5     2.43    3332    98.3    63570   11680   1.041  ! Near Maximum !
IMR 4007 SSC                        95.6     37.5     2.43    3331    98.3    63570   11671   1.041  ! Near Maximum !
ADI AR 2208                         95.1     35.7     2.32    3330   100.0    63570   11136   1.032  ! Near Maximum !
Hodgdon VARGET                      95.4     35.7     2.32    3330   100.0    63570   11136   1.032  ! Near Maximum !
Bofors RP3 NT ~approximation        97.5     37.5     2.43    3327    99.5    63570   11298   1.031  ! Near Maximum !
IMR 4064                            96.0     35.1     2.27    3322   100.0    63570   10939   1.036  ! Near Maximum !
IMR 3031                            92.0     33.3     2.16    3320   100.0    63570   10379   1.047  ! Near Maximum !
ADI AP 2214                        110.0     44.2     2.86    3318    94.5    57505   12707   1.061  ! Near Maximum !
Hodgdon H4831                      110.0     41.4     2.68    3317    94.4    59546   12235   1.053  ! Near Maximum !
Lovex S062                          93.6     35.3     2.29    3315   100.0    63570   10759   1.050  ! Near Maximum !
Somchem S361                       103.9     42.8     2.78    3315    95.3    63570   11770   1.040  ! Near Maximum !
IMR 7828                           110.0     41.4     2.68    3312    94.0    54987   12889   1.084
Accurate 4064                       93.9     35.6     2.31    3309   100.0    63570   10584   1.075  ! Near Maximum !
Bofors RP5 NT ~approximation       110.0     43.4     2.81    3307    92.1    58247   12543   1.060  ! Near Maximum !
Norma 201                           90.8     34.4     2.23    3306   100.0    63570   10707   1.052  ! Near Maximum !
Rottweil R902                       92.6     34.6     2.24    3296   100.0    63570   10580   1.053  ! Near Maximum !
Vihtavuori N150                    101.7     37.1     2.41    3295   100.0    63570   10509   1.048  ! Near Maximum !
Vihtavuori N540                     92.4     36.2     2.34    3294   100.0    63570   10500   1.048  ! Near Maximum !
Norma 202                           90.1     34.3     2.22    3293   100.0    63570   10351   1.048  ! Near Maximum !
Vihtavuori N165                    110.0     42.1     2.73    3287    97.2    58756   11765   1.070  ! Near Maximum !
Alliant Reloder-25                 110.0     42.4     2.74    3286    98.4    51195   12952   1.122
Lovex S060                          90.5     34.1     2.21    3281   100.0    63570   10459   1.035  ! Near Maximum !
Accurate 2700                       95.6     38.6     2.50    3276    98.1    63570   11009   1.044  ! Near Maximum !
Vihtavuori N160                    110.0     40.8     2.65    3268    95.3    59485   11623   1.063  ! Near Maximum !
Vihtavuori N140                     92.2     35.0     2.27    3263   100.0    63570    9966   1.048  ! Near Maximum !
Vihtavuori N135                     98.0     34.4     2.23    3253   100.0    63570    9737   1.057  ! Near Maximum !
Somchem S335                        90.4     34.2     2.22    3218   100.0    63570    9596   1.055  ! Near Maximum !
Vihtavuori N133                     92.1     32.7     2.12    3193   100.0    63570    9156   1.047  ! Near Maximum !
Bofors RP30                        110.0     42.6     2.76    3165    92.1    46180   12825   1.185
Norma MRP 2                        110.0     42.6     2.76    3165    92.1    46180   12825   1.185
Lovex S071                         110.0     40.3     2.61    3158    97.6    50898   11567   1.167
Vihtavuori N570                    110.0     44.9     2.91    3130    83.9    45151   13155   1.195
ADI AR 2217                        110.0     42.1     2.73    3105    90.9    47392   11915   1.163
Hodgdon H1000                      110.0     42.1     2.73    3105    90.9    47392   11915   1.163
Alliant Reloder-33                 110.0     46.2     2.99    3031    82.4    42242   12610   1.236
Hodgdon Retumbo                    110.0     42.8     2.77    3020    92.3    40841   12464   1.251
ADI AR 2225                        110.0     42.8     2.77    3020    92.3    40841   12464   1.251
Lovex D100                         110.0     45.8     2.97    2993    79.3    47538   10772   1.179
ReloadSwiss RS 80                  110.0     46.2     2.99    2966    81.5    40302   12321   1.264
Vihtavuori 24N41                   110.0     45.4     2.94    2941    75.3    43998   10984   1.216
ADI AR 2218                        110.0     45.4     2.94    2930    77.0    41369   12000   1.248
Vihtavuori N170                    110.0     42.1     2.73    2929    82.2    42423   10858   1.256
Norma 217                          110.0     41.9     2.72    2889    88.2    35032   12146   1.348
Hodgdon H870                       110.0     44.0     2.85    2854    80.6    35896   11684   1.336
Alliant Reloder-50                 110.0     46.1     2.98    2774    75.5    32740   11602   1.394
Bofors 12,7mmRA NC1214 Lot20115087 110.0     45.0     2.92    2753    69.1    34509   10724   1.394
Hodgdon 50BMG                      110.0     43.2     2.80    2720    66.4    35482    9929   1.347
Hodgdon US 869                     110.0     45.4     2.94    2715    70.2    35244   10004   1.354
SNPE Vectan SP 13                  110.0     43.5     2.82    2653    74.3    31721    9939   1.413
Accurate 8700                      110.0     44.4     2.88    2607    71.7    31690    9636   1.412
PB Clermont PCL 513/520/9520       110.0     43.5     2.82    2577    70.7    29950    9492   1.447
Vihtavuori 20N29                   110.0     45.8     2.97    2571    68.3    30103    9599   1.446
Vihtavuori N32C Tin Star           100.1     19.3     1.25    2421   100.0    63570    4466   1.131  ! Near Maximum !
NC A3502 ,test only                110.0     41.7     2.70    2387    48.1    29148    6943   1.474
TLP A 502(RH) ,test only           110.0     41.7     2.70    2359    52.0    27044    7383   1.516
ADI AS 25 BP                       110.0     14.4     0.93    2070   100.0    40278    3456   1.381
IMR TrailBoss                      110.0     14.4     0.93    2070   100.0    40278    3456   1.381
V1734 7-multiperf ,test only       110.0     41.7     2.70    1697    23.6    15379    3376   1.984
 
Thanks!

I don't remember what the twist on his barrel is, but it isn't factory. I'm thinking maybe it's a 9" twist Shilen. And at a mile of elevation with that velocity, I bet a 9" will be more than adequate for that bullet.
 
Berger has a Rifle Barrel Twist Rate Chart for most of the gun makers that have produced factory 220 Swift's, and list them at either 1:14" or 1:12". So unless your friend requested something different, I'd check it with a cleaning rod and a tight patch just to see what it is? The 77 gr. bullets don't do so will in anything less then 1:8". My Remington R5 223 has a 1:9" and I only run a 73 grain bullet in that gun because of that issue.
 
Should be ok on stability but here's a good way to check....
http://www.bergerbullets.com/twist-rate-calculator/
340a1f41d4121dd34523c0a2561036de.jpg



Sent from my iPhone using Tapatalk
 
Thanks. I've used that calculator before. I wasn't worried about it. If a 75 amax will stabilize out of a 9" twist .223 at this elevation, I figured a 77 Sierra would be ok from a 9" swift...
 
I know longer live or hunt at such high elevations anymore like I did when I lived in CO, and MT which makes up for a lot of the BC and stability factor, but so does the temps, as does the added velocity made up a lot of the lost ground vs. the 223 Remington. Both of which I don't have here in Idaho or in the little 223.
 
Jason,

I looked in my Sierra Manual, it does show loads for the 69 MK, and the 80 MK for the 220 Swift, just not the 77 MK. Both loads show the best accuracy using H4831 SC. I noticed a max load of 40.0 grains for the 80 SMK as the most accurate, and the 69 SMK accuracy load was 39.5, both were @ 3200 fps. I'd look at that powder for a starting point, and a more realistic velocity range.
 
I forgot about this thread, but thought I'd go ahead and share results. My friend ended up using RL26 and the 75 AMax for 3550 fps that last summer I lived in CO. It was a beast all the way out to 1200 yards. It also very quickly put the finishing touches on the rest of his rifle's throat. Ha. The brass survived just fine, but he'd have to "chase the lands" and load longer every time we went shooting. Granted, it was an older barrel that he had who knows how many rounds down already, and my friend likes to shoot. I bet that sucker got run pretty hot more often than not.

I was just thinking about how much fun a 75 at warp speed can be and decided to look this thread back up...
 
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