300 WSM Load Data

[wizzum]

Found this site searching for various info regarding data for a 300 WSM. Several combos that I plan on working up loads for. The 190 LRAB load data lead me to this site and it looks great with lots of good info. Look forward to sharing info.

List of bullets I plan on working up loads for and trying
190 LRAB
185 Berger Juggernauts
185 Berger Hunting VLD
190 Berger Hunting VLD
168 Barnes TTSX
168 Amax

Powders
H4831SC
H4350
H414
RL 17
Superperformance

Would welcome any thoughts/data on the above as I have all on hand at this point. Any others?

 

[Anonymous]

I have had outstanding results with RL17 in my .300WSM.... so much so it's to the point of exclusivity.

 

[DrMike]

Welcome aboard, wizzum. If you have particular loads in mind, let us know. In the past, I pushed quite a few 168 grain TSX bullets through my several 300 WSMs. The bullet performed well, dropping quite a variety of game here in the north. ReLoder 17 will assuredly give you good velocities, and with some judicious loading, it will give you good accuracy as well.

Cartridge          : .300 WSM (CIP)
Bullet             : .308, 190, Nosler AccuBond LR 58456 G7
Useable Case Capaci: 69.209 grain H2O = 4.494 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length      : 24.0 inch = 609.6 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   76    50.56   2408    2447   32900   8992     98.5    1.560
-18.0   77    51.82   2464    2562   35107   9187     99.1    1.521
-16.0   79    53.09   2520    2678   37458   9364     99.5    1.482
-14.0   81    54.35   2575    2797   39964   9520     99.8    1.437
-12.0   83    55.62   2629    2916   42641   9655    100.0    1.395
-10.0   85    56.88   2683    3037   45498   9771    100.0    1.354
-08.0   87    58.14   2736    3159   48549   9880    100.0    1.315
-06.0   89    59.41   2789    3281   51812   9986    100.0    1.277
-04.0   91    60.67   2841    3405   55301  10090    100.0    1.240  ! Near Maximum !
-02.0   93    61.94   2892    3529   59036  10191    100.0    1.206  ! Near Maximum !
+00.0   94    63.20   2943    3655   63038  10289    100.0    1.172  ! Near Maximum !
+02.0   96    64.46   2994    3781   67315  10384    100.0    1.139  !DANGEROUS LOAD-DO NOT USE!
+04.0   98    65.73   3044    3909   71866  10476    100.0    1.108  !DANGEROUS LOAD-DO NOT USE!
+06.0  100    66.99   3094    4039   76727  10565    100.0    1.078  !DANGEROUS LOAD-DO NOT USE!
+08.0  102    68.26   3144    4169   81927  10650    100.0    1.049  !DANGEROUS LOAD-DO NOT USE!
+10.0  104    69.52   3193    4302   87496  10731    100.0    1.021  !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     94    63.20   3034    3884   76330   9937    100.0    1.092  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    63.20   2804    3316   50663  10775     99.8    1.280

Here are some other possibilities you might explore:

Cartridge          : .300 WSM (CIP)
Bullet             : .308, 190, Nosler AccuBond LR 58456 G7
Useable Case Capaci: 69.209 grain H2O = 4.494 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 !

7 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                          105.3     70.1     4.54    3005    99.9    63000   11704   1.167  ! Near Maximum !
Vihtavuori N560                    107.0     69.7     4.52    2995    98.1    63000   11964   1.164  ! Near Maximum !
Accurate MAGPRO                    107.3     72.7     4.71    2985    96.8    63000   12016   1.170  ! Near Maximum !
IMR 7828 SSC                       105.4     69.1     4.48    2975    98.4    63000   11543   1.158  ! Near Maximum !
Alliant Reloder-22                 107.2     69.2     4.48    2972    99.3    63000   11516   1.171  ! Near Maximum !
Winchester WXR                     110.0     69.4     4.50    2968    99.2    62758   11522   1.173  ! Near Maximum !
Ramshot Magnum                     106.7     74.2     4.81    2949    99.6    63000   10976   1.163  ! Near Maximum !
Alliant Reloder-17                  94.4     63.2     4.09    2943   100.0    63000   10288   1.172  ! Near Maximum !
IMR 7828                           110.0     68.2     4.42    2934    98.0    60176   11438   1.182  ! Near Maximum !
Alliant Reloder-19                 103.7     66.2     4.29    2924    99.2    63000   10950   1.172  ! Near Maximum !
Ramshot Hunter                      99.2     65.4     4.24    2920   100.0    63000   10592   1.179  ! Near Maximum !
Hodgdon H414                        93.7     63.2     4.10    2916    99.8    63000   10619   1.181  ! Near Maximum !
Winchester 760                      93.7     63.2     4.10    2916    99.8    63000   10619   1.181  ! Near Maximum !
Alliant Reloder-25                 110.0     69.8     4.52    2908   100.0    56255   11134   1.219  ! Near Maximum !
Norma 204                           98.3     64.8     4.20    2898    99.0    63000   10653   1.174  ! Near Maximum !
Vihtavuori N550                     95.9     62.5     4.05    2897   100.0    63000   10253   1.190  ! Near Maximum !
Norma URP                           98.7     62.3     4.04    2896   100.0    63000   10116   1.186  ! Near Maximum !
Hodgdon H4831                      109.1     67.6     4.38    2896    97.6    63000   10771   1.170  ! Near Maximum !
Hodgdon H4831 SC                   104.8     67.6     4.38    2896    97.6    63000   10771   1.170  ! Near Maximum !
Accurate 4350                       97.9     62.5     4.05    2893   100.0    63000   10073   1.203  ! Near Maximum !
IMR 4831                           103.6     63.3     4.10    2879   100.0    63000    9892   1.195  ! Near Maximum !
Accurate 3100                      107.2     68.4     4.43    2876   100.0    63000   10146   1.205  ! Near Maximum !
Winchester Supreme 780             102.1     68.7     4.45    2875    99.0    63000   10385   1.178  ! Near Maximum !
Vihtavuori N165                    109.3     69.0     4.47    2871    99.4    63000   10198   1.183  ! Near Maximum !
Hodgdon Hybrid 100V                101.4     62.6     4.05    2854   100.0    63000    9308   1.187  ! Near Maximum !
Hodgdon H380                        91.2     59.4     3.85    2853   100.0    63000    9760   1.196  ! Near Maximum !
Vihtavuori N160                    109.2     66.8     4.33    2850    98.2    63000   10184   1.180  ! Near Maximum !
Norma 203 old                       91.5     59.0     3.82    2839   100.0    63000    9388   1.208  ! Near Maximum !
IMR 4007 SSC                        93.0     60.2     3.90    2837    99.6    63000    9909   1.191  ! Near Maximum !
Accurate 4064                       90.9     56.8     3.68    2792   100.0    63000    8792   1.230  ! Near Maximum !

I use a fair amount of VN550 and VN560 in my current iteration of the rifle with both 180 and 200 grain bullets.

Again, welcome to the forum.

 

[Anonymous]

I forgot- Welcome!

Just for what it's worth... my rifle doesn't like max charges with heavier bullets- no pressure signs but accuracy suffers. However, backing off a couple grains yields under MOA. Latest "pet" load is a 180AB at 2925. If there's a ballistic equation that won't solve (at least on this continent)...I'm not aware of it. the 190 ABLR ought to do even better further out.

With 150s though the story changes. Mine likes 150s as fast as you can push them. A max load of 69ish gr (Alliant data) and the 150AB gets 3340fps, SD of 8 (!)fps and leaves one ragged hole for a 5 shot group.

 

[Guy Miner]

Borrowed a load from a 1,000 yard benchrest shooter, H4350 and a 210 gr Berger VLD. He won matches with it.

From my rifle's factory 24" barrel, it produced 2815 fps, very small spread, and 1.5" groups at 300 yards.

I'm happy with that.

Regards, Guy

 

[wizzum]

Men, I really appreciate the info! Now I have some homework to do. Will report results. Working with a custom and a factory 300 WSM so I have different expections from each as I will use them differently. The custom will have to stretch out so BC with the heavies is important. I am really novice once you break the shell...goes back to the old saying...I have taken enough karate lessons to get my tail kicked...