Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:156 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:1:10.5
Load data in caliber .300 WSM with .308 | 155.8gr | Peregrine Glider (Glider GRM) bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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% | 55,985 psi | 88% | 2881 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,462 psi | 85% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,998 psi | 85% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,810 psi | 86% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,810 psi | 86% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,448 psi | 87% | 2904 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 55,579 psi | 87% | 2959 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,448 psi | 87% | 3041 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 56,275 psi | 88% | 2992 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,319 psi | 90% | 2989 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,245 psi | 87% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,985 psi | 88% | 2917 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,362 psi | 88% | 3048 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,188 psi | 88% | 3117 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,276 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,710 psi | 89% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,389 psi | 85% | 2982 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 3041 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,621 psi | 86% | 3084 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 2759 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2913 fps | 96.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,231 psi | 88% | 3009 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 54,244 psi | 85% | 2976 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,563 psi | 86% | 2940 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,145 psi | 90% | 2927 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,508 psi | 90% | 3018 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,753 psi | 87% | 3068 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,376 psi | 87% | 2930 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,550 psi | 87% | 2989 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 56,608 psi | 89% | 3061 fps | 97.7% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3009 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 56,855 psi | 89% | 3005 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,414 psi | 77% | 2913 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,434 psi | 87% | 3028 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,985 psi | 88% | 3077 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 55% | 1818 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,202 psi | 88% | 2982 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 54,969 psi | 86% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,854 psi | 88% | 2959 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,463 psi | 87% | 2930 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 56,536 psi | 89% | 2848 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 2966 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,680 psi | 87% | 2966 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,543 psi | 73% | 2874 fps | 98.3% |
| IMR 4895 | <<locked>> | 90% | 55,782 psi | 87% | 3015 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,245 psi | 87% | 2943 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,535 psi | 87% | 2927 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,970 psi | 88% | 2966 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,956 psi | 88% | 2920 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,594 psi | 89% | 2969 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,854 psi | 88% | 2969 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 2999 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 55,027 psi | 86% | 2936 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,550 psi | 87% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,130 psi | 90% | 3022 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,433 psi | 85% | 3025 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 54,215 psi | 85% | 2995 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,388 psi | 84% | 3022 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 55,898 psi | 88% | 2963 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,216 psi | 87% | 2979 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,420 psi | 88% | 2946 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,694 psi | 56% | 1857 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,810 psi | 86% | 2923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,898 psi | 88% | 2969 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,853 psi | 86% | 3051 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,244 psi | 85% | 3084 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 3064 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 3091 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,985 psi | 88% | 2920 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,419 psi | 87% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,114 psi | 85% | 2966 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,563 psi | 86% | 2940 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,854 psi | 88% | 2969 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,970 psi | 88% | 2966 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,594 psi | 89% | 2969 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2989 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,898 psi | 88% | 3028 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,782 psi | 89% | 2910 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,244 psi | 85% | 2940 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,882 psi | 86% | 2963 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,811 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,869 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,376 psi | 88% | 2920 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 56,869 psi | 89% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,927 psi | 88% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,392 psi | 90% | 2986 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,650 psi | 86% | 2966 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,892 psi | 77% | 2972 fps | 100% |
| Unknown powder | <<locked>> | 98% | 55,622 psi | 87% | 3035 fps | 99% |
| Vihtavuori N130 | <<locked>> | 84% | 55,100 psi | 86% | 2825 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,057 psi | 88% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,638 psi | 90% | 2936 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,332 psi | 87% | 2910 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,304 psi | 88% | 3005 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 54,868 psi | 86% | 2949 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,940 psi | 86% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,507 psi | 89% | 3058 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,408 psi | 65% | 2841 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,027 psi | 85% | 2949 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,608 psi | 89% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,608 psi | 89% | 3061 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,982 psi | 53% | 2740 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,057 psi | 88% | 2992 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% | 2740 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,952 psi | 80% | 2854 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,682 psi | 61% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,512 psi | 70% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,512 psi | 70% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 48,443 psi | 76% | 2789 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,927 psi | 59% | 2657 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 36,405 psi | 57% | 2684 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,772 psi | 69% | 2776 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,231 psi | 58% | 2618 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,818 psi | 72% | 2785 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 45,890 psi | 72% | 2776 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,649 psi | 83% | 2989 fps | 99.9% |
| Alliant Power Pro 2000-MR | 54.6 gr | 80% | 39,624 psi | 62% | 2792 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,825 psi | 58% | 2641 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,359 psi | 84% | 2844 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,508 psi | 62% | 2703 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,593 psi | 57% | 2697 fps | 95.7% |
| Alliant Reloder-17 | 53.8 gr | 80% | 31,705 psi | 50% | 2595 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,633 psi | 50% | 2592 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,378 psi | 62% | 2848 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,960 psi | 67% | 2772 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 36,201 psi | 57% | 2638 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 48,167 psi | 75% | 2828 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,572 psi | 75% | 2776 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,526 psi | 68% | 2789 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,240 psi | 76% | 2940 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 48,689 psi | 76% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,188 psi | 58% | 2641 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 90% | 45,919 psi | 72% | 2877 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 98% | 52,823 psi | 83% | 2953 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 44,135 psi | 69% | 2785 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,473 psi | 49% | 2533 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,233 psi | 61% | 2740 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 94% | 48,269 psi | 76% | 2940 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 41% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,406 psi | 60% | 2657 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 39,929 psi | 63% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,376 psi | 57% | 2592 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,311 psi | 73% | 2769 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 53,432 psi | 84% | 2805 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,269 psi | 76% | 2854 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,209 psi | 72% | 2799 fps | 95.2% |
| IMR 4831 | <<locked>> | 92% | 36,114 psi | 57% | 2657 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 40,451 psi | 63% | 2736 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 45,818 psi | 72% | 2785 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 51,808 psi | 81% | 2874 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,888 psi | 67% | 2756 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,859 psi | 69% | 2713 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 38,899 psi | 61% | 2657 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 41,002 psi | 64% | 2700 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 43,990 psi | 69% | 2779 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,888 psi | 67% | 2726 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 43,221 psi | 68% | 2740 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,870 psi | 61% | 2694 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 36,782 psi | 58% | 2687 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,319 psi | 60% | 2700 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 43,743 psi | 69% | 2841 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 45,730 psi | 72% | 2785 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,208 psi | 71% | 2808 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,356 psi | 77% | 2831 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 42% | 1660 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,372 psi | 81% | 2871 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,917 psi | 67% | 2740 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,481 psi | 65% | 2812 fps | 97.8% |
| ReloadSwiss RS 60 | 53.8 gr | 80% | 33,736 psi | 53% | 2667 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,230 psi | 57% | 2700 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,175 psi | 61% | 2772 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 46,673 psi | 73% | 2772 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,857 psi | 64% | 2677 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 34,055 psi | 53% | 2579 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 48,167 psi | 75% | 2828 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,002 psi | 64% | 2700 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,888 psi | 67% | 2756 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,899 psi | 61% | 2657 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 45,890 psi | 72% | 2822 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,201 psi | 55% | 2635 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,359 psi | 84% | 2864 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,947 psi | 69% | 2756 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,322 psi | 66% | 2743 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,222 psi | 69% | 2684 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,753 psi | 58% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,209 psi | 72% | 2753 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 49,588 psi | 78% | 2867 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,859 psi | 69% | 2684 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,729 psi | 69% | 2756 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,099 psi | 55% | 2592 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 28,892 psi | 45% | 2520 fps | 96% |
| Unknown powder | <<locked>> | 86% | 37,507 psi | 59% | 2690 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 48,892 psi | 77% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,597 psi | 65% | 2628 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,131 psi | 61% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,292 psi | 63% | 2661 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,878 psi | 47% | 2441 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 86% | 37,681 psi | 59% | 2667 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 48,298 psi | 76% | 2841 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,856 psi | 62% | 2677 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 37,985 psi | 60% | 2710 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 33,881 psi | 53% | 2667 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,676 psi | 50% | 2500 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 49,124 psi | 77% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,919 psi | 72% | 2877 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,836 psi | 50% | 2671 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,025 psi | 82% | 2930 fps | 99.9% |
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 104 powders for .300 WSM loaded with the .308 | 155.8gr | Peregrine Glider (Glider GRM). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,818 fps to 3,117 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.308" calls for a 1:10.5 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 155.8gr | Peregrine Glider (Glider GRM) 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.