Load Specifications
Bullet:.308 | 150gr | Barnes TSX BT
Bullet Manufacturer:Barnes
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber .300 WSM with .308 | 150gr | Barnes TSX BT bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 56,231 psi | 88% | 2946 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,737 psi | 86% | 2976 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,230 psi | 85% | 2963 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,971 psi | 89% | 3041 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,418 psi | 85% | 2959 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 54,302 psi | 85% | 3012 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 3094 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 55,492 psi | 87% | 3048 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 56,768 psi | 89% | 3051 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,665 psi | 86% | 3002 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,143 psi | 86% | 2979 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,275 psi | 88% | 3114 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,347 psi | 87% | 3173 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,550 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,927 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,232 psi | 90% | 3097 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,489 psi | 82% | 3097 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,696 psi | 90% | 3202 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,188 psi | 58% | 2799 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,495 psi | 65% | 2956 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,724 psi | 87% | 3068 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 57,232 psi | 90% | 3087 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,246 psi | 90% | 3048 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,391 psi | 88% | 2986 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,653 psi | 90% | 3087 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,057 psi | 88% | 3136 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 55,288 psi | 87% | 2999 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,507 psi | 89% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,592 psi | 86% | 3045 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 54,012 psi | 85% | 3087 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 96% | 54,969 psi | 86% | 3051 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 56,086 psi | 88% | 3061 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,704 psi | 76% | 2966 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,579 psi | 87% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,201 psi | 87% | 3127 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 55% | 1864 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,740 psi | 90% | 3071 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,101 psi | 88% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,202 psi | 88% | 3031 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,275 psi | 88% | 3009 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 55,927 psi | 88% | 2910 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 3018 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,043 psi | 88% | 3031 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,488 psi | 81% | 3025 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 54,882 psi | 86% | 3071 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 54,665 psi | 86% | 3002 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,592 psi | 86% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,143 psi | 86% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,172 psi | 86% | 2976 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 55,680 psi | 87% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,897 psi | 86% | 3018 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 3058 fps | 97.6% |
| Norma 201 | <<locked>> | 90% | 57,464 psi | 90% | 3045 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,839 psi | 86% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,391 psi | 88% | 3081 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,867 psi | 84% | 3084 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 57,087 psi | 89% | 3107 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,649 psi | 83% | 3071 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 55,187 psi | 86% | 3018 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,578 psi | 86% | 3038 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,608 psi | 87% | 3002 fps | 99.8% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,041 psi | 85% | 2982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,013 psi | 86% | 3022 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,925 psi | 85% | 3107 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,406 psi | 90% | 3202 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,288 psi | 85% | 3114 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 3146 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,737 psi | 86% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,563 psi | 86% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,768 psi | 89% | 3074 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,246 psi | 90% | 3048 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,897 psi | 86% | 3018 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,143 psi | 86% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,680 psi | 87% | 3028 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 3058 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,464 psi | 90% | 3009 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,259 psi | 87% | 3087 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,000 psi | 89% | 2982 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,203 psi | 90% | 3051 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,725 psi | 90% | 3074 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,796 psi | 87% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,086 psi | 88% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,622 psi | 87% | 2972 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 55,927 psi | 88% | 3038 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,259 psi | 87% | 2933 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,855 psi | 89% | 3045 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,058 psi | 89% | 3071 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,008 psi | 75% | 3025 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,492 psi | 87% | 2897 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,028 psi | 88% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,244 psi | 85% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,376 psi | 87% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,230 psi | 87% | 2999 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3081 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 55,100 psi | 86% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,159 psi | 90% | 3022 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 3084 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,451 psi | 63% | 2881 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,290 psi | 90% | 3061 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,158 psi | 86% | 3054 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,288 psi | 85% | 3091 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,127 psi | 52% | 2769 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 57,740 psi | 90% | 3084 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 46,514 psi | 73% | 2802 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,111 psi | 80% | 2920 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,812 psi | 61% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,122 psi | 72% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,068 psi | 80% | 2904 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,753 psi | 58% | 2697 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 35,433 psi | 56% | 2720 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 42,902 psi | 67% | 2822 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 80% | 36,550 psi | 57% | 2661 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,034 psi | 71% | 2835 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 45,092 psi | 71% | 2828 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,707 psi | 83% | 3054 fps | 99.8% |
| Alliant Power Pro 2000-MR | 56.5 gr | 80% | 39,030 psi | 61% | 2841 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,984 psi | 56% | 2684 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,417 psi | 82% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,609 psi | 61% | 2746 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,984 psi | 56% | 2740 fps | 95.1% |
| Alliant Reloder-17 | 57 gr | 82% | 33,156 psi | 52% | 2694 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,721 psi | 51% | 2677 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,638 psi | 61% | 2887 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,322 psi | 66% | 2825 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 35,331 psi | 55% | 2680 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 50,415 psi | 79% | 2933 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,862 psi | 73% | 2828 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,801 psi | 69% | 2854 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,472 psi | 76% | 3009 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 51,793 psi | 81% | 2946 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,562 psi | 82% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,870 psi | 61% | 2743 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 94% | 47,152 psi | 74% | 2963 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 51,590 psi | 81% | 2992 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 43,279 psi | 68% | 2835 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,822 psi | 51% | 2625 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,349 psi | 62% | 2799 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 51,198 psi | 80% | 3058 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 41% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,568 psi | 65% | 2782 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 42,772 psi | 67% | 2835 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,363 psi | 60% | 2700 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,499 psi | 73% | 2835 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 52,678 psi | 83% | 2867 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,792 psi | 80% | 2963 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,296 psi | 73% | 2861 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,927 psi | 58% | 2736 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,537 psi | 62% | 2779 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 45,034 psi | 71% | 2835 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 50,952 psi | 80% | 2927 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,742 psi | 65% | 2799 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 43,221 psi | 68% | 2762 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 38,058 psi | 60% | 2703 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 42,670 psi | 67% | 2795 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 46,064 psi | 72% | 2881 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,974 psi | 66% | 2776 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 42,366 psi | 66% | 2789 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,985 psi | 60% | 2733 fps | 97.2% |
| Norma URP | <<locked>> | 88% | 35,998 psi | 56% | 2726 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 37,637 psi | 59% | 2746 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 43,062 psi | 67% | 2887 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 45,121 psi | 71% | 2838 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,353 psi | 70% | 2858 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,776 psi | 76% | 2887 fps | 99.2% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,734 psi | 80% | 2930 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,150 psi | 71% | 2848 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,437 psi | 63% | 2851 fps | 97.3% |
| ReloadSwiss RS 60 | 55.6 gr | 80% | 32,982 psi | 52% | 2703 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 38,043 psi | 60% | 2802 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,089 psi | 64% | 2877 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 45,716 psi | 72% | 2825 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,798 psi | 62% | 2720 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 33,098 psi | 52% | 2615 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 50,415 psi | 79% | 2933 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,670 psi | 67% | 2795 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,742 psi | 65% | 2799 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 38,058 psi | 60% | 2703 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 46,064 psi | 72% | 2881 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,635 psi | 84% | 2949 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,272 psi | 54% | 2667 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,403 psi | 84% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,192 psi | 68% | 2805 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,394 psi | 65% | 2785 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,381 psi | 68% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,926 psi | 56% | 2585 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,486 psi | 76% | 2858 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 48,878 psi | 77% | 2923 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,047 psi | 67% | 2736 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,062 psi | 67% | 2808 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 34,185 psi | 54% | 2631 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 28,079 psi | 44% | 2549 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 49,110 psi | 77% | 2802 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,729 psi | 69% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,175 psi | 61% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,929 psi | 63% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,372 psi | 51% | 2562 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 37,681 psi | 59% | 2733 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 45,150 psi | 71% | 2831 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 38,566 psi | 60% | 2703 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 37,086 psi | 58% | 2733 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 35,317 psi | 55% | 2762 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,966 psi | 49% | 2536 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 44,730 psi | 70% | 2877 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 47,398 psi | 74% | 2969 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,096 psi | 49% | 2700 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,901 psi | 64% | 2789 fps | 98.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 103 powders for .300 WSM loaded with the .308 | 150gr | Barnes TSX BT. Alliant Reloder-17 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,202 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 150gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.