Load Specifications
Load data in caliber .300 WSM with .308 | 176gr | MRR Green Long Range bullet and 100 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, Hodgdon Superformance and Alliant Reloder-17.
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.
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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>> | 84% | 56,333 psi | 88% | 2707 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,853 psi | 86% | 2730 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,129 psi | 86% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,463 psi | 87% | 2749 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,119 psi | 66% | 2638 fps | 96.8% |
| Accurate 4064 | <<locked>> | 90% | 54,955 psi | 86% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,100 psi | 86% | 2871 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 55,492 psi | 87% | 2815 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,739 psi | 89% | 2815 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,346 psi | 85% | 2762 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,405 psi | 87% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,303 psi | 87% | 2936 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,652 psi | 89% | 2835 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,246 psi | 90% | 2858 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2927 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,157 psi | 85% | 2910 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,176 psi | 63% | 2667 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2828 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,477 psi | 87% | 2831 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 57,421 psi | 90% | 2851 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,145 psi | 90% | 2825 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,985 psi | 88% | 2743 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,609 psi | 90% | 2844 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,970 psi | 88% | 2894 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 54,505 psi | 85% | 2743 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,534 psi | 85% | 2815 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 56,115 psi | 88% | 2894 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 98% | 56,681 psi | 89% | 2854 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 86% | 56,101 psi | 88% | 2822 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2799 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,753 psi | 87% | 2858 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,100 psi | 86% | 2910 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 56% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,362 psi | 88% | 2812 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,810 psi | 86% | 2782 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,361 psi | 87% | 2785 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,621 psi | 86% | 2759 fps | 98.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2854 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,796 psi | 87% | 2805 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,429 psi | 77% | 2766 fps | 99.5% |
| IMR 4895 | <<locked>> | 88% | 54,969 psi | 86% | 2835 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,346 psi | 85% | 2762 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,129 psi | 86% | 2785 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,897 psi | 86% | 2740 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,898 psi | 88% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,926 psi | 86% | 2795 fps | 99.2% |
| Lovex S070 | <<locked>> | 98% | 55,927 psi | 88% | 2831 fps | 98.7% |
| Norma 201 | <<locked>> | 88% | 57,696 psi | 90% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,694 psi | 86% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,420 psi | 88% | 2844 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,868 psi | 86% | 2851 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 45,107 psi | 71% | 2789 fps | 96.4% |
| Norma URP | <<locked>> | 98% | 54,114 psi | 85% | 2854 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 57,377 psi | 90% | 2874 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,710 psi | 89% | 2910 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 54,781 psi | 86% | 2789 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,273 psi | 85% | 2802 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,390 psi | 87% | 2769 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,013 psi | 56% | 1745 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,406 psi | 90% | 2789 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,056 psi | 86% | 2802 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,418 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,925 psi | 85% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,824 psi | 86% | 2894 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,433 psi | 85% | 2923 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 54,810 psi | 86% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,694 psi | 86% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,290 psi | 90% | 2844 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,145 psi | 90% | 2825 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,926 psi | 86% | 2795 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,129 psi | 86% | 2785 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,898 psi | 88% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,927 psi | 88% | 2831 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,419 psi | 87% | 2854 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,826 psi | 89% | 2815 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,421 psi | 90% | 2835 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,724 psi | 87% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,941 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,376 psi | 87% | 2753 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 55,637 psi | 87% | 2795 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,911 psi | 86% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,550 psi | 89% | 2805 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,334 psi | 90% | 2838 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,170 psi | 82% | 2858 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2740 fps | 96.6% |
| Unknown powder | <<locked>> | 96% | 55,477 psi | 87% | 2867 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 84% | 57,551 psi | 90% | 2687 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,434 psi | 87% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,665 psi | 86% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,592 psi | 86% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,143 psi | 86% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,912 psi | 88% | 2838 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 57,653 psi | 90% | 2818 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,740 psi | 90% | 2802 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,188 psi | 88% | 2884 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,193 psi | 69% | 2740 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,261 psi | 90% | 2835 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,622 psi | 87% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,115 psi | 88% | 2894 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,868 psi | 56% | 2677 fps | 99.4% |
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% | 49,690 psi | 78% | 2618 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,018 psi | 66% | 2543 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,066 psi | 75% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 45,281 psi | 71% | 2585 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 36,564 psi | 57% | 2526 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 39,755 psi | 62% | 2539 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,256 psi | 49% | 2418 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 45,701 psi | 72% | 2654 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,001 psi | 61% | 2513 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,863 psi | 75% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,573 psi | 76% | 2644 fps | 100% |
| Alliant Power Pro 2000-MR | 53.3 gr | 80% | 41,814 psi | 66% | 2697 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,537 psi | 60% | 2530 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,350 psi | 65% | 2595 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,952 psi | 50% | 2441 fps | 95.3% |
| Alliant Reloder-17 | 52.5 gr | 80% | 33,315 psi | 52% | 2503 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,283 psi | 46% | 2398 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,852 psi | 53% | 2575 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,324 psi | 71% | 2667 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 38,218 psi | 60% | 2536 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 44,440 psi | 70% | 2615 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,661 psi | 78% | 2651 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,891 psi | 73% | 2687 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,301 psi | 82% | 2838 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 80% | 51,140 psi | 80% | 2697 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,957 psi | 61% | 2539 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 84% | 39,639 psi | 62% | 2605 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 46,891 psi | 73% | 2697 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,166 psi | 72% | 2667 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,267 psi | 43% | 2283 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,827 psi | 62% | 2595 fps | 99.5% |
| Hodgdon Superformance | 62.4 gr | 90% | 44,193 psi | 69% | 2720 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 42% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,104 psi | 64% | 2559 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 42,308 psi | 66% | 2595 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,203 psi | 60% | 2490 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 82% | 40,292 psi | 63% | 2503 fps | 95% |
| IMR 4350 | <<locked>> | 90% | 42,090 psi | 66% | 2592 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,872 psi | 64% | 2546 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 31,415 psi | 49% | 2405 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 42,395 psi | 66% | 2621 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,863 psi | 75% | 2661 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,092 psi | 71% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,774 psi | 72% | 2595 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 40,770 psi | 64% | 2546 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,578 psi | 56% | 2441 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 40,915 psi | 64% | 2572 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 44,817 psi | 70% | 2608 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 45,121 psi | 71% | 2612 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,698 psi | 64% | 2582 fps | 99% |
| Norma 204 | <<locked>> | 94% | 47,819 psi | 75% | 2733 fps | 95.1% |
| Norma MRP | <<locked>> | 98% | 42,090 psi | 66% | 2726 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 31,763 psi | 50% | 2421 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 40,524 psi | 64% | 2598 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 37,913 psi | 59% | 2572 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 47,993 psi | 75% | 2677 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,601 psi | 75% | 2694 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,677 psi | 81% | 2713 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,745 psi | 42% | 1558 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,751 psi | 84% | 2740 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,552 psi | 62% | 2526 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,019 psi | 69% | 2703 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,505 psi | 56% | 2569 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,518 psi | 53% | 2493 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,911 psi | 56% | 2559 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 48,472 psi | 76% | 2641 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,612 psi | 67% | 2562 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 35,868 psi | 56% | 2480 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 44,440 psi | 70% | 2615 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,578 psi | 56% | 2441 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,092 psi | 71% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,770 psi | 64% | 2546 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 40,915 psi | 64% | 2572 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,057 psi | 58% | 2533 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,180 psi | 72% | 2651 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,411 psi | 70% | 2631 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,079 psi | 72% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,392 psi | 60% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 39,726 psi | 62% | 2487 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 52,112 psi | 82% | 2743 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,803 psi | 72% | 2559 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,108 psi | 72% | 2648 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 36,796 psi | 58% | 2487 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 26,600 psi | 42% | 2320 fps | 96.4% |
| Somchem S385 | <<locked>> | 96% | 42,293 psi | 66% | 2631 fps | 95% |
| Unknown powder | <<locked>> | 82% | 34,693 psi | 54% | 2484 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 51,111 psi | 80% | 2602 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,555 psi | 68% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,192 psi | 66% | 2539 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,322 psi | 66% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,270 psi | 49% | 2339 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 80% | 32,416 psi | 51% | 2405 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 50,546 psi | 79% | 2713 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,887 psi | 66% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,750 psi | 51% | 2441 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 29,544 psi | 46% | 2415 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,980 psi | 49% | 2356 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 51,953 psi | 81% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,639 psi | 62% | 2605 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,441 psi | 43% | 2411 fps | 95.2% |
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 100 powders for .300 WSM loaded with the .308 | 176gr | MRR Green Long Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,936 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 176.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 176gr | MRR Green Long Range 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.