Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:160 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 | 160gr | MRR Green Long Range bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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% | 56,681 psi | 89% | 2848 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,201 psi | 87% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,853 psi | 86% | 2867 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,680 psi | 87% | 2930 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,680 psi | 87% | 2930 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,057 psi | 88% | 2877 fps | 96.9% |
| Accurate 4064 | <<locked>> | 92% | 54,737 psi | 86% | 2913 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 3002 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 56,072 psi | 88% | 2956 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,043 psi | 89% | 2953 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,085 psi | 86% | 2907 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,753 psi | 87% | 2881 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,753 psi | 89% | 3012 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,956 psi | 88% | 3081 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,884 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,275 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,551 psi | 90% | 2999 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 3002 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,128 psi | 85% | 3045 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 2720 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,959 psi | 66% | 2881 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,956 psi | 88% | 2969 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 57,479 psi | 90% | 2989 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,143 psi | 85% | 2904 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,942 psi | 89% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,404 psi | 85% | 2936 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,376 psi | 88% | 3038 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 55,129 psi | 86% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,071 psi | 86% | 2949 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 96% | 56,405 psi | 88% | 3028 fps | 97.9% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2982 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 56,652 psi | 89% | 2966 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,081 psi | 77% | 2877 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,072 psi | 88% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,579 psi | 87% | 3038 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,114 psi | 55% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,710 psi | 89% | 2949 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 54,752 psi | 86% | 2923 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,724 psi | 87% | 2927 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,085 psi | 86% | 2890 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 56,579 psi | 89% | 2812 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 2933 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,231 psi | 88% | 2940 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2835 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 55,332 psi | 87% | 2976 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,085 psi | 86% | 2907 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,897 psi | 86% | 2887 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,680 psi | 87% | 2930 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,550 psi | 87% | 2881 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,086 psi | 88% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,434 psi | 87% | 2930 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2963 fps | 98% |
| Norma 201 | <<locked>> | 88% | 54,375 psi | 85% | 2897 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,332 psi | 87% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,710 psi | 89% | 2982 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2989 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 57,595 psi | 90% | 3012 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,185 psi | 83% | 2986 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 55,550 psi | 87% | 2923 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,882 psi | 86% | 2943 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,985 psi | 88% | 2907 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 56% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,592 psi | 86% | 2887 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,593 psi | 87% | 2933 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,476 psi | 85% | 3012 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,012 psi | 85% | 3048 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3022 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3051 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 86% | 55,419 psi | 87% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,042 psi | 86% | 2894 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,319 psi | 90% | 2979 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,143 psi | 85% | 2904 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,434 psi | 87% | 2930 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,680 psi | 87% | 2930 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,086 psi | 88% | 2930 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2963 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,666 psi | 87% | 2992 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,377 psi | 90% | 2877 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,421 psi | 90% | 2956 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,476 psi | 85% | 2927 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,275 psi | 88% | 2838 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,463 psi | 88% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,014 psi | 88% | 2884 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 56,405 psi | 88% | 2940 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,390 psi | 87% | 2835 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,087 psi | 89% | 2946 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 57,537 psi | 90% | 2976 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 2936 fps | 100% |
| Unknown powder | <<locked>> | 98% | 55,361 psi | 87% | 2995 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 84% | 54,795 psi | 86% | 2785 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,869 psi | 88% | 2818 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,650 psi | 86% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,882 psi | 86% | 2867 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,086 psi | 88% | 2969 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 54,679 psi | 86% | 2910 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,781 psi | 86% | 2900 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,246 psi | 88% | 3018 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,915 psi | 64% | 2802 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2966 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,202 psi | 88% | 2963 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,405 psi | 88% | 3028 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,475 psi | 52% | 2707 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,666 psi | 87% | 2953 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% | 47,050 psi | 74% | 2710 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,372 psi | 81% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,233 psi | 61% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,947 psi | 70% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,947 psi | 70% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 48,965 psi | 77% | 2762 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 37,130 psi | 58% | 2612 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,911 psi | 56% | 2648 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 43,381 psi | 68% | 2736 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,840 psi | 58% | 2579 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,484 psi | 71% | 2746 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 45,513 psi | 71% | 2736 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,301 psi | 84% | 2959 fps | 100% |
| Alliant Power Pro 2000-MR | 54.2 gr | 80% | 39,349 psi | 62% | 2759 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,158 psi | 57% | 2598 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,881 psi | 83% | 2805 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,059 psi | 61% | 2664 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,289 psi | 57% | 2664 fps | 95.9% |
| Alliant Reloder-17 | 53.4 gr | 80% | 31,285 psi | 49% | 2556 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,082 psi | 49% | 2552 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,957 psi | 61% | 2812 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,467 psi | 67% | 2736 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 35,607 psi | 56% | 2598 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 47,674 psi | 75% | 2792 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,253 psi | 74% | 2740 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,150 psi | 69% | 2766 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,023 psi | 77% | 2917 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 48,356 psi | 76% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,695 psi | 57% | 2605 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 90% | 45,585 psi | 71% | 2841 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 96% | 50,053 psi | 78% | 2871 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,758 psi | 69% | 2749 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,067 psi | 49% | 2497 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,610 psi | 62% | 2713 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 48,022 psi | 75% | 2907 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 41% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,841 psi | 61% | 2631 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 39,697 psi | 62% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,100 psi | 57% | 2556 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,050 psi | 72% | 2736 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 53,142 psi | 83% | 2766 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,935 psi | 75% | 2818 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,862 psi | 73% | 2779 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 35,520 psi | 56% | 2618 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,016 psi | 63% | 2697 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,484 psi | 71% | 2746 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,358 psi | 80% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,163 psi | 66% | 2710 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,540 psi | 68% | 2674 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,392 psi | 60% | 2618 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 40,379 psi | 63% | 2661 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 43,671 psi | 68% | 2743 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 42,322 psi | 66% | 2687 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 42,569 psi | 67% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,421 psi | 60% | 2654 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 36,405 psi | 57% | 2651 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,985 psi | 60% | 2667 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 40,611 psi | 64% | 2746 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,498 psi | 71% | 2753 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,918 psi | 70% | 2772 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,110 psi | 77% | 2799 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,440 psi | 41% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,082 psi | 80% | 2835 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,612 psi | 67% | 2703 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,915 psi | 64% | 2766 fps | 97.8% |
| ReloadSwiss RS 60 | 53.4 gr | 80% | 33,344 psi | 52% | 2628 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,694 psi | 56% | 2661 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,769 psi | 61% | 2733 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,963 psi | 72% | 2730 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,292 psi | 63% | 2638 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,446 psi | 52% | 2539 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 47,674 psi | 75% | 2792 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,379 psi | 63% | 2661 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,163 psi | 66% | 2710 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,392 psi | 60% | 2618 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 43,671 psi | 68% | 2743 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,621 psi | 54% | 2592 fps | 96.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,896 psi | 84% | 2831 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,555 psi | 68% | 2723 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,785 psi | 65% | 2700 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,787 psi | 69% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,289 psi | 57% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,658 psi | 72% | 2713 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 49,023 psi | 77% | 2825 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,395 psi | 68% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,221 psi | 68% | 2717 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 34,548 psi | 54% | 2552 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 26,527 psi | 42% | 2418 fps | 95% |
| Unknown powder | <<locked>> | 86% | 37,130 psi | 58% | 2654 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 48,718 psi | 76% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,379 psi | 65% | 2595 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,610 psi | 62% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,900 psi | 63% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,327 psi | 46% | 2402 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 86% | 37,159 psi | 58% | 2628 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 48,008 psi | 75% | 2805 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,407 psi | 62% | 2638 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 35,157 psi | 55% | 2615 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 33,286 psi | 52% | 2625 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,169 psi | 49% | 2461 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 48,675 psi | 76% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,585 psi | 71% | 2841 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,357 psi | 49% | 2635 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,866 psi | 81% | 2897 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 | 160gr | MRR Green Long Range. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,081 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,081 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 52–90 %, leaving at least 10 % headroom. The 160.0 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 160gr | 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.