Load Specifications
Load data in caliber .300 WSM with .308 | 155gr | CutEdge MTAC bullet and 102 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% | 57,087 psi | 89% | 2910 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,695 psi | 87% | 2940 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,332 psi | 87% | 2930 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,275 psi | 88% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,724 psi | 89% | 2940 fps | 96.9% |
| Accurate 4064 | <<locked>> | 92% | 55,376 psi | 87% | 2979 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 3064 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 56,507 psi | 89% | 3018 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,259 psi | 85% | 2966 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,550 psi | 87% | 2969 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,463 psi | 88% | 2943 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,580 psi | 90% | 3084 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,507 psi | 89% | 3143 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,638 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,710 psi | 89% | 2917 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,520 psi | 85% | 3005 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3071 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,042 psi | 86% | 3114 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 2782 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,641 psi | 67% | 2943 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,550 psi | 89% | 3035 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 54,433 psi | 85% | 2999 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,737 psi | 86% | 2966 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,203 psi | 90% | 2949 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,940 psi | 86% | 2999 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,246 psi | 90% | 3104 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 55,637 psi | 87% | 2953 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,724 psi | 87% | 3015 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 56,956 psi | 89% | 3091 fps | 97.9% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 57,479 psi | 90% | 3048 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 88% | 57,058 psi | 89% | 3031 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,835 psi | 78% | 2940 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,768 psi | 89% | 3064 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,275 psi | 88% | 3104 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 55% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,334 psi | 90% | 3015 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,419 psi | 87% | 2989 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,086 psi | 88% | 2986 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,579 psi | 87% | 2953 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 56,884 psi | 89% | 2874 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2992 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,826 psi | 89% | 3002 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,644 psi | 73% | 2897 fps | 98.5% |
| IMR 4895 | <<locked>> | 90% | 55,927 psi | 88% | 3038 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,550 psi | 87% | 2969 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,579 psi | 87% | 2949 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,275 psi | 88% | 2992 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,014 psi | 88% | 2943 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,695 psi | 89% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,956 psi | 88% | 2992 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3028 fps | 98% |
| Norma 201 | <<locked>> | 88% | 55,143 psi | 86% | 2963 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,782 psi | 87% | 2963 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,508 psi | 90% | 3051 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,882 psi | 86% | 3054 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 54,491 psi | 85% | 3022 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,911 psi | 84% | 3048 fps | 98.2% |
| Ramshot TAC | <<locked>> | 86% | 55,912 psi | 88% | 2986 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,608 psi | 87% | 3009 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,536 psi | 89% | 2969 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,607 psi | 56% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,911 psi | 86% | 2949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,086 psi | 88% | 2995 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,042 psi | 86% | 3077 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,737 psi | 86% | 3114 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3091 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,535 psi | 87% | 3120 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 86% | 55,840 psi | 88% | 2943 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,492 psi | 87% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,288 psi | 85% | 2989 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,737 psi | 86% | 2966 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,956 psi | 88% | 2992 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,275 psi | 88% | 2992 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,695 psi | 89% | 2992 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3028 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,434 psi | 88% | 3058 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,186 psi | 85% | 2959 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,013 psi | 86% | 2989 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,927 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,058 psi | 89% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,434 psi | 88% | 2943 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 56,942 psi | 89% | 3002 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,130 psi | 88% | 2897 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,696 psi | 90% | 3009 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 54,650 psi | 86% | 2989 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 3002 fps | 100% |
| Unknown powder | <<locked>> | 98% | 56,115 psi | 88% | 3064 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 55,376 psi | 87% | 2851 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,289 psi | 88% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,245 psi | 87% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,550 psi | 87% | 2933 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,057 psi | 88% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,724 psi | 89% | 3035 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 55,274 psi | 87% | 2976 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,274 psi | 87% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,927 psi | 89% | 3081 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,379 psi | 65% | 2858 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,447 psi | 85% | 2976 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,768 psi | 89% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,956 psi | 89% | 3091 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,953 psi | 53% | 2766 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,362 psi | 88% | 3018 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% | 47,456 psi | 74% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,982 psi | 81% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,581 psi | 62% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,484 psi | 71% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,472 psi | 78% | 2822 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 37,434 psi | 59% | 2667 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 36,303 psi | 57% | 2700 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 43,801 psi | 69% | 2795 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,101 psi | 58% | 2635 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,963 psi | 72% | 2808 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 45,919 psi | 72% | 2795 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,882 psi | 84% | 3025 fps | 100% |
| Alliant Power Pro 2000-MR | 56.1 gr | 80% | 39,784 psi | 62% | 2818 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,608 psi | 57% | 2657 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,388 psi | 84% | 2871 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,479 psi | 62% | 2726 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,651 psi | 57% | 2717 fps | 95.8% |
| Alliant Reloder-17 | 55.2 gr | 80% | 31,517 psi | 49% | 2608 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,386 psi | 49% | 2605 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,738 psi | 58% | 2802 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,105 psi | 68% | 2799 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 36,027 psi | 56% | 2654 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 48,138 psi | 75% | 2851 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,732 psi | 75% | 2799 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,614 psi | 70% | 2825 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,458 psi | 78% | 2979 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 48,733 psi | 76% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,028 psi | 58% | 2661 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 90% | 46,122 psi | 72% | 2904 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 50,633 psi | 79% | 2936 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,237 psi | 69% | 2808 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,488 psi | 49% | 2552 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,724 psi | 59% | 2720 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 94% | 48,617 psi | 76% | 2969 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 41% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,175 psi | 61% | 2687 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 39,972 psi | 63% | 2733 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,274 psi | 57% | 2608 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,514 psi | 73% | 2795 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 53,534 psi | 84% | 2828 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,414 psi | 76% | 2877 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,108 psi | 74% | 2835 fps | 95.6% |
| IMR 4831 | <<locked>> | 92% | 36,085 psi | 57% | 2677 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,437 psi | 63% | 2756 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,963 psi | 72% | 2808 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,851 psi | 81% | 2894 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,772 psi | 67% | 2776 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,801 psi | 69% | 2733 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,711 psi | 61% | 2674 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 40,988 psi | 64% | 2720 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 44,077 psi | 69% | 2802 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 42,612 psi | 67% | 2743 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 43,062 psi | 67% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,856 psi | 61% | 2713 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 36,767 psi | 58% | 2707 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 38,406 psi | 60% | 2723 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 41,089 psi | 64% | 2805 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 45,876 psi | 72% | 2812 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,368 psi | 71% | 2831 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,559 psi | 78% | 2858 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,440 psi | 41% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,517 psi | 81% | 2897 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,960 psi | 67% | 2762 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,524 psi | 65% | 2831 fps | 97.8% |
| ReloadSwiss RS 60 | 55.2 gr | 80% | 33,605 psi | 53% | 2680 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,274 psi | 57% | 2720 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,160 psi | 61% | 2792 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,383 psi | 73% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,611 psi | 64% | 2697 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,924 psi | 53% | 2595 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 48,138 psi | 75% | 2851 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,988 psi | 64% | 2720 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,772 psi | 67% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,711 psi | 61% | 2674 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 44,077 psi | 69% | 2802 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,099 psi | 55% | 2651 fps | 96.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,976 psi | 69% | 2779 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,351 psi | 66% | 2762 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,193 psi | 69% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,680 psi | 57% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,311 psi | 73% | 2776 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 49,734 psi | 78% | 2890 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,685 psi | 68% | 2703 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,859 psi | 69% | 2782 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 34,809 psi | 55% | 2605 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 28,674 psi | 45% | 2530 fps | 96% |
| Unknown powder | <<locked>> | 86% | 37,565 psi | 59% | 2710 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 48,936 psi | 77% | 2756 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,655 psi | 65% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,059 psi | 63% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,176 psi | 63% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,660 psi | 46% | 2454 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 86% | 37,695 psi | 59% | 2687 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 48,225 psi | 76% | 2861 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,813 psi | 62% | 2697 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 35,549 psi | 56% | 2671 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 33,866 psi | 53% | 2687 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,546 psi | 49% | 2516 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 49,414 psi | 77% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 46,122 psi | 72% | 2904 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,691 psi | 50% | 2690 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,359 psi | 82% | 2956 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 118 powders for .300 WSM loaded with the .308 | 155gr | CutEdge MTAC. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,143 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 | 155gr | CutEdge MTAC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.