.338 Norma Magnum load data

waveslayer · Mar 25, 2014

Anybody have any load data for the 338 Norma? I am having a hard time finding load data for it.

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DrMike · Mar 25, 2014

Welcome to the forum. Will this help get you started?

Code:

Cartridge          : .338 Norma Mag.
Bullet             : .338, 225, Nosler AccuBond 54357
Useable Case Capaci: 99.859 grain H2O = 6.484 cm³
Cartridge O.A.L. L6: 3.681 inch = 93.50 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 4350

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   75    68.24   2393    2860   34961   9577     95.1    1.538
-18.0   76    69.95   2446    2990   37129   9833     95.9    1.503
-16.0   78    71.65   2500    3122   39418  10079     96.7    1.458
-14.0   80    73.36   2553    3256   41833  10313     97.4    1.418
-12.0   82    75.06   2606    3392   44382  10535     98.1    1.379
-10.0   84    76.77   2658    3530   47073  10742     98.6    1.341
-08.0   86    78.48   2710    3670   49913  10936     99.0    1.304
-06.0   88    80.18   2762    3811   52912  11115     99.4    1.269
-04.0   89    81.89   2813    3954   56078  11278     99.7    1.236  ! Near Maximum !
-02.0   91    83.59   2864    4098   59423  11424     99.9    1.203  ! Near Maximum !
+00.0   93    85.30   2914    4244   62957  11554    100.0    1.172  ! Near Maximum !
+02.0   95    87.01   2964    4390   66692  11666    100.0    1.142  !DANGEROUS LOAD-DO NOT USE!
+04.0   97    88.71   3014    4538   70643  11773    100.0    1.113  !DANGEROUS LOAD-DO NOT USE!
+06.0   99    90.42   3063    4686   74824  11876    100.0    1.085  !DANGEROUS LOAD-DO NOT USE!
+08.0  101    92.12   3111    4835   79251  11976    100.0    1.058  !DANGEROUS LOAD-DO NOT USE!
+10.0  102    93.83   3159    4986   83943  12073    100.0    1.032  !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     93    85.30   3009    4522   72986  11176    100.0    1.099  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     93    85.30   2777    3852   52901  11643     97.4    1.268

Code:

Cartridge          : .338 Norma Mag.
Bullet             : .338, 225, Nosler AccuBond 54357
Useable Case Capaci: 99.859 grain H2O = 6.484 cm³
Cartridge O.A.L. L6: 3.681 inch = 93.50 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63000 psi, or 434 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 !

34 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
---------------------------------  -----------------------------------------------------------------
Vihtavuori N570                    109.0    105.8     6.85    3105    96.8    63000   15200   1.163  ! Near Maximum !
Alliant Reloder-33                 109.2    110.5     7.16    3091    97.2    63000   14997   1.164  ! Near Maximum !
Norma MRP 2                        108.0     99.4     6.44    3045    99.6    63000   13743   1.178  ! Near Maximum !
Vihtavuori N560                     99.8     93.9     6.08    3041    99.1    63000   13757   1.168  ! Near Maximum !
Alliant Reloder-25                 105.8     96.9     6.28    3039   100.0    63000   12766   1.165  ! Near Maximum !
Norma MRP                           98.0     94.1     6.10    3038   100.0    63000   13280   1.175  ! Near Maximum !
IMR 7828 SSC                        98.7     93.3     6.05    3032    99.4    63000   13325   1.157  ! Near Maximum !
IMR 7828                           104.3     93.3     6.05    3032    99.4    63000   13325   1.157  ! Near Maximum !
Accurate MAGPRO                    100.1     97.9     6.34    3032    98.2    63000   13874   1.176  ! Near Maximum !
Hodgdon H1000                      108.9     99.2     6.43    3015    99.6    63000   12998   1.153  ! Near Maximum !
Alliant Reloder-22                 100.1     93.1     6.03    3014    99.9    63000   13166   1.174  ! Near Maximum !
Winchester WXR                     102.8     93.6     6.06    3014    99.8    63000   13187   1.174  ! Near Maximum !
Hodgdon Retumbo                    110.0    101.8     6.60    2997   100.0    57428   13378   1.207  ! Near Maximum !
Ramshot Magnum                      99.9    100.1     6.49    2995   100.0    63000   12552   1.170  ! Near Maximum !
Alliant Reloder-19                  97.2     89.4     5.80    2975    99.8    63000   12577   1.169  ! Near Maximum !
Ramshot Hunter                      92.7     88.2     5.71    2963   100.0    63000   12069   1.176  ! Near Maximum !
Hodgdon H4831 SC                    98.4     91.6     5.94    2956    98.9    63000   12494   1.166  ! Near Maximum !
Hodgdon H4831                      102.4     91.6     5.94    2956    98.9    63000   12494   1.166  ! Near Maximum !
Norma 204                           92.3     87.7     5.68    2954    99.7    63000   12282   1.168  ! Near Maximum !
Vihtavuori 24N41                   110.0    107.9     6.99    2947    90.4    60770   13485   1.179  ! Near Maximum !
Norma URP                           92.3     84.1     5.45    2939   100.0    63000   11565   1.182  ! Near Maximum !
Accurate 4350                       91.4     84.2     5.45    2933   100.0    63000   11520   1.200  ! Near Maximum !
Winchester Supreme 780              95.9     93.1     6.03    2930    99.8    63000   11966   1.175  ! Near Maximum !
Vihtavuori N165                    102.5     93.3     6.05    2922    99.9    63000   11721   1.180  ! Near Maximum !
IMR 4831                            96.8     85.4     5.53    2920   100.0    63000   11315   1.191  ! Near Maximum !
Accurate 3100                      100.2     92.2     5.98    2918   100.0    63000   11572   1.205  ! Near Maximum !
Hodgdon H4350                       94.9     85.5     5.54    2916   100.0    63000   11583   1.172  ! Near Maximum !
IMR 4350                            93.2     85.3     5.53    2915   100.0    63000   11555   1.171  ! Near Maximum !
Norma 217                          110.0     99.7     6.46    2913    99.6    51522   13664   1.287
Vihtavuori N160                    102.7     90.6     5.87    2913    99.2    63000   11817   1.172  ! Near Maximum !
Hodgdon H870                       110.0    104.6     6.78    2900    96.0    51712   14092   1.277
Hodgdon Hybrid 100V                 94.7     84.4     5.47    2893   100.0    63000   10686   1.184  ! Near Maximum !
Vihtavuori N170                    110.0    100.2     6.49    2887    94.4    59366   12718   1.220  ! Near Maximum !