Dr. Mike & others - powders for 300 WSM?

[DrMike]

Those appear to be coming along very nicely. I do concur that though velocity may be a tad slower, accuracy would win the day in making my selection.

 

[gerry]

3000 fps with good accuracy is a good place to be. The RL 15 load will kick noticeably less and also be cheaper to shoot since it burns a lot less powder, both are desireable attributes to have.

 

[tecumseh]

H380, RL15, Varget or N550 for 165/168 grain bullets. IMR4831, N550, N560 or RL19 for the 180 grain bullet.

I've got some 165 gr BT, I never thought to try H380 or Varget with this caliber. I've had good results with IMR-4350 and RL-22 with 180 gr bullets.

 

[DrMike]

The faster powders with lighter bullets seem to give excellent accuracy in the short, fat cartridges. There is some velocity loss, but animals hit with these bullets have never complained that the velocity was too low.

 

[steve4102]

Cartridge : .300 WSM (CIP)
Bullet : .308, 165, Nosler PART SP 16330
Useable Case Capaci: 73.662 grain H2O = 4.783 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 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 !

139 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 106.7 75.6 4.90 3223 99.5 63000 12454 1.095 ! Near Maximum !
Vihtavuori N560 108.4 75.2 4.87 3206 97.0 63000 12617 1.093 ! Near Maximum !
Accurate MAGPRO 108.6 78.4 5.08 3193 95.5 63000 12620 1.098 ! Near Maximum !
Raufoss RA15 108.7 74.6 4.83 3186 98.6 63000 12203 1.098 ! Near Maximum !
Alliant Reloder-22 108.7 74.6 4.83 3186 98.6 63000 12203 1.098 ! Near Maximum !
Bofors RP5/NP ~approximation 108.7 74.6 4.83 3186 98.6 63000 12203 1.098 ! Near Maximum !
IMR 7828 SSC 106.7 74.4 4.82 3184 97.3 63000 12188 1.086 ! Near Maximum !
Ramshot Magnum 110.0 80.0 5.18 3180 97.6 62164 12339 1.093 ! Near Maximum !
Alliant Reloder-17 95.8 68.3 4.42 3171 100.0 63000 11040 1.097 ! Near Maximum !
SNPE Vectan SP 12 110.0 79.7 5.17 3169 97.6 61539 12291 1.098 ! Near Maximum !
ADI AR 2213 107.5 73.8 4.78 3167 97.2 63000 12059 1.086 ! Near Maximum !
PB Clermont PCL 517 110.0 79.7 5.17 3164 97.4 61179 12294 1.101 ! Near Maximum !
Rottweil R905 109.7 74.0 4.79 3143 96.9 63000 11805 1.100 ! Near Maximum !
ADI AR 2209 104.4 70.5 4.57 3138 98.3 63000 11529 1.091 ! Near Maximum !
Alliant Reloder-19 105.1 71.4 4.63 3137 98.4 63000 11608 1.099 ! Near Maximum !
Ramshot Hunter 100.6 70.5 4.57 3137 99.8 63000 11321 1.104 ! Near Maximum !
Somchem S365 102.6 69.3 4.49 3135 100.0 63000 10535 1.111 ! Near Maximum !
Winchester WXR 110.0 73.9 4.79 3135 98.0 59754 12079 1.125 ! Near Maximum !
Winchester 760 95.0 68.2 4.42 3134 99.4 63000 11343 1.106 ! Near Maximum !
Hodgdon H414 95.0 68.2 4.42 3134 99.4 63000 11343 1.106 ! Near Maximum !
Bofors RP14 ~approximation 105.9 71.9 4.66 3130 98.4 63000 11519 1.099 ! Near Maximum !
Norma URP 100.1 67.3 4.36 3118 100.0 63000 10862 1.111 ! Near Maximum !
Bofors RP19 ~approximation 100.2 67.3 4.36 3118 100.0 63000 10859 1.111 ! Near Maximum !
Vihtavuori N550 97.3 67.5 4.37 3117 100.0 63000 10998 1.115 ! Near Maximum !
Accurate 4350 103.9 67.5 4.37 3114 100.0 63000 10832 1.127 ! Near Maximum !
Norma 204 99.6 69.8 4.53 3110 98.2 63000 11290 1.100 ! Near Maximum !
Bofors RP4 ~approximation 102.9 69.8 4.53 3110 98.2 63000 11290 1.100 ! Near Maximum !
Raufoss RA4 102.9 69.8 4.53 3110 98.2 63000 11290 1.100 ! Near Maximum !
Hodgdon H4831 SC 106.1 72.8 4.72 3103 96.5 63000 11347 1.097 ! Near Maximum !
ADI AP 2214 110.0 77.5 5.02 3103 96.7 60158 11751 1.109 ! Near Maximum !
Somchem S385 105.3 72.3 4.68 3099 99.0 63000 11114 1.118 ! Near Maximum !
IMR 4831 105.1 68.3 4.43 3098 100.0 63000 10623 1.119 ! Near Maximum !
Ramshot BigGame 93.5 65.5 4.25 3097 100.0 63000 10467 1.110 ! Near Maximum !
IMR 7828 110.0 72.6 4.70 3096 96.2 57500 11932 1.132 ! Near Maximum !
SNPE Vectan SP 11 93.6 65.6 4.25 3095 100.0 63000 10452 1.110 ! Near Maximum !
Hodgdon H4831 110.0 72.6 4.70 3091 96.4 62184 11311 1.103 ! Near Maximum !
Bofors RP4 NT ~approximation 100.4 69.2 4.49 3089 99.3 63000 10927 1.112 ! Near Maximum !
Bofors RP5 NT ~approximation 110.0 76.2 4.93 3087 94.4 60706 11667 1.110 ! Near Maximum !
IMR 4895 90.3 61.3 3.97 3086 100.0 63000 10374 1.117 ! Near Maximum !
Winchester Supreme 780 103.4 74.0 4.80 3083 98.2 63000 10982 1.104 ! Near Maximum !
Raufoss RA11 91.1 61.9 4.01 3079 100.0 63000 10342 1.116 ! Near Maximum !
Bofors RP11 ~approximation 91.1 61.9 4.01 3079 100.0 63000 10342 1.116 ! Near Maximum !
Alliant Reloder-15 91.1 61.9 4.01 3079 100.0 63000 10342 1.116 ! Near Maximum !
Hodgdon Hybrid 100V 102.8 67.5 4.38 3076 100.0 63000 9999 1.110 ! Near Maximum !
Rottweil R904 103.6 69.4 4.49 3076 97.3 63000 10973 1.104 ! Near Maximum !
Norma 203B 91.6 62.2 4.03 3075 100.0 63000 10256 1.118 ! Near Maximum !
Lovex S070 99.7 66.9 4.34 3073 99.5 63000 10760 1.121 ! Near Maximum !
Hodgdon H380 92.4 64.1 4.16 3072 100.0 63000 10487 1.120 ! Near Maximum !
Hodgdon H4350 102.4 68.0 4.41 3071 99.0 63000 10709 1.106 ! Near Maximum !
Alliant Reloder-25 110.0 74.3 4.81 3071 99.6 53659 11815 1.170
IMR 4350 100.5 67.9 4.40 3071 99.1 63000 10691 1.106 ! Near Maximum !
Bofors RP7 NT ~approximation 94.4 64.7 4.19 3066 99.6 63000 10436 1.095 ! Near Maximum !
Norma 203 old 92.8 63.7 4.13 3062 100.0 63000 10089 1.131 ! Near Maximum !
IMR 4320 93.1 62.2 4.03 3061 100.0 63000 9971 1.103 ! Near Maximum !
Vihtavuori N165 110.0 73.9 4.79 3060 98.6 61569 10776 1.120 ! Near Maximum !
Rottweil R903 94.9 63.7 4.13 3057 100.0 63000 10008 1.130 ! Near Maximum !
Somchem S355 95.0 63.1 4.09 3053 100.0 63000 10020 1.125 ! Near Maximum !
Rottweil R907 97.3 64.8 4.20 3051 99.0 63000 10565 1.116 ! Near Maximum !
Lovex S065 98.5 65.4 4.24 3050 99.9 63000 10376 1.121 ! Near Maximum !
IMR 4007 SSC 94.2 64.9 4.20 3050 99.0 63000 10557 1.116 ! Near Maximum !
ADI AR 2208 93.6 61.7 4.00 3043 100.0 63000 9986 1.107 ! Near Maximum !
Hodgdon VARGET 94.0 61.7 4.00 3043 100.0 63000 9986 1.107 ! Near Maximum !
Bofors RP3 NT ~approximation 96.1 64.8 4.20 3043 99.8 63000 10172 1.106 ! Near Maximum !
Vihtavuori N160 110.0 71.6 4.64 3041 97.0 61969 10713 1.115 ! Near Maximum !
Somchem S361 102.4 74.1 4.80 3038 96.5 63000 10713 1.115 ! Near Maximum !
IMR 4064 94.5 60.6 3.93 3035 100.0 63000 9797 1.111 ! Near Maximum !
Lovex S062 92.2 60.9 3.95 3027 100.0 63000 9638 1.126 ! Near Maximum !
IMR 3031 90.4 57.4 3.72 3026 100.0 63000 9294 1.123 ! Near Maximum !
Accurate 4064 96.6 61.3 3.98 3017 100.0 63000 9468 1.152 ! Near Maximum !
Rottweil R902 91.2 59.7 3.87 3009 100.0 63000 9481 1.129 ! Near Maximum !
Vihtavuori N150 100.1 64.2 4.16 3007 100.0 63000 9425 1.124 ! Near Maximum !
Vihtavuori N540 91.0 62.4 4.05 3005 100.0 63000 9436 1.124 ! Near Maximum !
Accurate 2700 95.3 66.8 4.33 2998 98.9 63000 9957 1.120 ! Near Maximum !
Vihtavuori N140 90.8 60.4 3.92 2975 100.0 63000 8939 1.124 ! Near Maximum !
Norma MRP 2 110.0 74.7 4.84 2970 94.8 48588 11957 1.233
Vihtavuori N135 96.4 59.3 3.85 2964 100.0 63000 8723 1.134 ! Near Maximum !
Vihtavuori N570 110.0 78.8 5.10 2950 87.7 47443 12468 1.242
Accurate 3100 110.0 70.6 4.58 2947 98.9 53562 10586 1.216
Lovex S071 110.0 70.6 4.58 2947 98.9 53562 10586 1.216
Alliant Reloder 33 110.0 82.1 5.32 2947 88.8 47982 12384 1.237
Hodgdon H1000 110.0 73.9 4.79 2911 93.9 49517 11141 1.214
Vihtavuori N133 90.7 56.4 3.65 2910 100.0 63000 8218 1.125 ! Near Maximum !
Hodgdon Retumbo 110.0 75.1 4.87 2844 95.5 42759 11693 1.301
Lovex D100 110.0 80.4 5.21 2807 82.6 49807 10191 1.231
ADI AR 2218 110.0 79.6 5.16 2773 81.9 43275 11642 1.298
Vihtavuori 24N41 110.0 79.6 5.16 2766 78.9 45978 10482 1.269
Vihtavuori N170 110.0 73.9 4.79 2748 85.4 44564 10254 1.308
Hodgdon H870 110.0 77.1 5.00 2699 84.8 37674 11192 1.390
Alliant Reloder-50 110.0 80.8 5.23 2634 80.2 34588 11209 1.450
Bofors 12,7mmRA NC1214 Lot20115087 110.0 79.0 5.12 2602 72.9 36661 10307 1.451
Hodgdon 50BMG 110.0 75.8 4.91 2563 70.1 37092 9557 1.408
Hodgdon US 869 110.0 79.6 5.16 2561 74.1 36877 9627 1.414
SNPE Vectan SP 13 110.0 76.3 4.95 2505 78.4 33246 9558 1.474
Vihtavuori 20N29 110.0 80.4 5.21 2436 72.8 31578 9331 1.509
PB Clermont PCL 513/520/9520 110.0 76.3 4.95 2436 74.9 31358 9173 1.511
Accurate 8700 110.0 76.5 4.96 2400 74.3 30936 8998 1.518
NC A3502 ,test only 110.0 73.1 4.73 2245 51.1 30261 6754 1.545
TLP A 502(RH) ,test only 110.0 73.1 4.73 2220 55.5 28122 7209 1.588
Vihtavuori N32C Tin Star 99.3 33.6 2.18 2207 100.0 63000 4054 1.225 ! Near Maximum !
IMR TrailBoss 110.0 25.2 1.63 1897 100.0 40479 3166 1.482
ADI AS 25 BP 110.0 25.2 1.63 1897 100.0 40479 3166 1.482
V1734 7-multiperf ,test only 110.0 73.1 4.73 1593 25.1 15897 3289 2.093

You can make this more legible if you wish.

 Cartridge          : .300 WSM (CIP)
Bullet             : .308, 165, Nosler PART SP 16330
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length      : 24.0 inch or 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 !

127 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                          106.7     75.6     4.90    3223    99.5    63000   12454   1.095  ! Near Maximum !
Vihtavuori N560                    108.4     75.2     4.87    3206    97.0    63000   12616   1.093  ! Near Maximum !
Accurate MAGPRO                    108.6     78.4     5.08    3193    95.5    63000   12620   1.098  ! Near Maximum !
Bofors RP5/NP ~approximation       108.7     74.6     4.83    3186    98.6    63000   12203   1.098  ! Near Maximum !
Alliant Reloder-22                 108.7     74.6     4.83    3186    98.6    63000   12203   1.098  ! Near Maximum !
Raufoss RA15                       108.7     74.6     4.83    3186    98.6    63000   12203   1.098  ! Near Maximum !
IMR 7828 SSC                       106.7     74.4     4.82    3184    97.3    63000   12188   1.086  ! Near Maximum !
Ramshot Magnum (Big Boy)           110.0     80.0     5.18    3180    97.6    62164   12339   1.093  ! Near Maximum !
SNPE Vectan SP 12                  110.0     79.7     5.17    3169    97.6    61539   12291   1.098  ! Near Maximum !
ADI AR 2213                        107.5     73.8     4.78    3167    97.2    63000   12059   1.086  ! Near Maximum !
PB Clermont PCL 517                110.0     79.7     5.17    3164    97.4    61177   12294   1.101  ! Near Maximum !
Rottweil R905                      109.7     74.0     4.79    3143    96.9    63000   11805   1.100  ! Near Maximum !
Hodgdon H4350                      100.3     67.7     4.39    3139    99.9    63000   11168   1.097  ! Near Maximum !
ADI AR 2209                        104.4     70.5     4.57    3138    98.3    63000   11529   1.091  ! Near Maximum !
Alliant Reloder-19                 105.1     71.4     4.63    3137    98.4    63000   11608   1.099  ! Near Maximum !
Ramshot Hunter                     100.6     70.5     4.57    3137    99.8    63000   11321   1.104  ! Near Maximum !
Somchem S365                       102.6     69.3     4.49    3135   100.0    63000   10535   1.111  ! Near Maximum !
Winchester WXR                     110.0     73.9     4.79    3135    98.0    59754   12079   1.125  ! Near Maximum !
Winchester 760                      95.0     68.2     4.42    3134    99.4    63000   11341   1.106  ! Near Maximum !
Alliant Reloder-17                  92.7     66.0     4.28    3131   100.0    63000   10695   1.093  ! Near Maximum !
Bofors RP14 ~approximation         105.9     71.9     4.66    3130    98.4    63000   11520   1.099  ! Near Maximum !
IMR 4350                           102.8     66.9     4.33    3124    99.6    63000   11120   1.102  ! Near Maximum !
Norma URP                          100.1     67.3     4.36    3118   100.0    63000   10862   1.111  ! Near Maximum !
Bofors RP19 ~approximation         100.2     67.3     4.36    3118   100.0    63000   10859   1.111  ! Near Maximum !
Vihtavuori N550                     97.3     67.5     4.37    3117   100.0    63000   10998   1.115  ! Near Maximum !

 

[Guy Miner]

MUCH easier to read. Thanks!

Guy

 

[tecumseh]

The faster powders with lighter bullets seem to give excellent accuracy in the short, fat cartridges. There is some velocity loss, but animals hit with these bullets have never complained that the velocity was too low.

Dr. Mike did you use magnum primers with those loads?

 

[FOTIS]

Post your results please.

 

[DrMike]

The faster powders with lighter bullets seem to give excellent accuracy in the short, fat cartridges. There is some velocity loss, but animals hit with these bullets have never complained that the velocity was too low.

Dr. Mike did you use magnum primers with those loads?

On the WSMs, I primarily use large rifle primers. I don't often use magnum primers in the short, fat cartridges. The exceptions are when developing loads for cold weather or occasionally when using a ball powder, though even this does not necessitate magnum primers.

 

[tecumseh]

I'll post the results after I try this load. I'll have to try some large rifle primers and see what happens.