Load Specifications
Bullet Manufacturer:Norma
Bullet Weight:180 gr
Bullet Diameter:0.311"
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:1:14.5
Load data in caliber .300 WSM with .311 | 180gr | Norma Semi Soft Point bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 54,592 psi | 86% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,479 psi | 90% | 2779 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,081 psi | 77% | 2746 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 55,085 psi | 86% | 2759 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,245 psi | 87% | 2858 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,230 psi | 85% | 2785 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,376 psi | 87% | 2789 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 2897 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,420 psi | 88% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,389 psi | 85% | 2910 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,941 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,275 psi | 88% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,101 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,479 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 2881 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2825 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2772 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,553 psi | 64% | 2684 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 2956 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,027 psi | 85% | 2802 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,797 psi | 89% | 2828 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2825 fps | 96.8% |
| Bofors RP7 | <<locked>> | 92% | 56,275 psi | 88% | 2808 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,333 psi | 88% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,493 psi | 90% | 2848 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,419 psi | 87% | 2877 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 55,811 psi | 87% | 2841 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 54,853 psi | 86% | 2792 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,086 psi | 88% | 2835 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,129 psi | 86% | 2835 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,099 psi | 85% | 2890 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 57% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,940 psi | 86% | 2782 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,464 psi | 90% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,522 psi | 90% | 2812 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,536 psi | 89% | 2789 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 56,985 psi | 89% | 2841 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,665 psi | 86% | 2789 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,362 psi | 88% | 2858 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,725 psi | 90% | 2861 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2825 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 82% | 56,420 psi | 88% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,491 psi | 85% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,652 psi | 89% | 2759 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,897 psi | 86% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,433 psi | 85% | 2782 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,506 psi | 87% | 2822 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,901 psi | 64% | 2602 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 56,391 psi | 88% | 2776 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,029 psi | 89% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,521 psi | 87% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,201 psi | 85% | 2838 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2910 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 57,522 psi | 90% | 2894 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,304 psi | 88% | 2848 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,535 psi | 87% | 2933 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 96% | 56,536 psi | 89% | 2900 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2779 fps | 97.1% |
| Ramshot TAC | <<locked>> | 82% | 56,507 psi | 89% | 2808 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,637 psi | 89% | 2825 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 57% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,217 psi | 90% | 2828 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,246 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,116 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,897 psi | 86% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,696 psi | 90% | 2966 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,450 psi | 90% | 2756 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,000 psi | 89% | 2779 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,608 psi | 89% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,752 psi | 86% | 2815 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,491 psi | 85% | 2867 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 92% | 56,275 psi | 88% | 2808 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,433 psi | 85% | 2782 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,491 psi | 85% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,897 psi | 86% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,506 psi | 87% | 2822 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,781 psi | 86% | 2831 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,288 psi | 87% | 2789 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,159 psi | 88% | 2808 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,508 psi | 90% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,650 psi | 86% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,273 psi | 85% | 2736 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2861 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 56,971 psi | 89% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,984 psi | 86% | 2776 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,782 psi | 89% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,536 psi | 89% | 2808 fps | 96% |
| Somchem S365 | <<locked>> | 98% | 56,347 psi | 88% | 2894 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 2848 fps | 98.6% |
| Unknown powder | <<locked>> | 92% | 54,940 psi | 86% | 2851 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 86% | 57,377 psi | 90% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,392 psi | 90% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,971 psi | 89% | 2746 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,752 psi | 86% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,216 psi | 87% | 2818 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,992 psi | 72% | 2680 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 86% | 56,492 psi | 89% | 2772 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,622 psi | 87% | 2864 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2844 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,028 psi | 88% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,419 psi | 87% | 2877 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,524 psi | 65% | 2808 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,824 psi | 84% | 2815 fps | 97.4% |
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 2495 | <<locked>> | 80% | 48,080 psi | 75% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,568 psi | 65% | 2510 fps | 95.4% |
| Accurate 3100 | <<locked>> | 90% | 34,998 psi | 55% | 2474 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,527 psi | 71% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,229 psi | 54% | 2474 fps | 97% |
| ADI AR 2206H | <<locked>> | 80% | 51,068 psi | 80% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,381 psi | 68% | 2589 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 94% | 46,572 psi | 73% | 2730 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,113 psi | 83% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,253 psi | 74% | 2792 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,540 psi | 68% | 2615 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,601 psi | 73% | 2680 fps | 99.8% |
| Alliant Reloder-16 | 52.5 gr | 80% | 33,852 psi | 53% | 2484 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,971 psi | 60% | 2605 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,134 psi | 68% | 2664 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,091 psi | 68% | 2710 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,237 psi | 41% | 2293 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,663 psi | 53% | 2513 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,010 psi | 50% | 2516 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,662 psi | 79% | 2749 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,714 psi | 69% | 2625 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,091 psi | 68% | 2710 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 41,249 psi | 65% | 2546 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,750 psi | 83% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,034 psi | 69% | 2628 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 80% | 39,407 psi | 62% | 2589 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 43,714 psi | 69% | 2631 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 51,590 psi | 81% | 2746 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,270 psi | 49% | 2382 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,121 psi | 71% | 2677 fps | 100% |
| Hodgdon Superformance | 62.7 gr | 84% | 40,611 psi | 64% | 2641 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,687 psi | 72% | 2635 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 47,819 psi | 75% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,627 psi | 67% | 2566 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,003 psi | 66% | 2536 fps | 96.4% |
| IMR 4350 | <<locked>> | 84% | 39,233 psi | 61% | 2526 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,103 psi | 63% | 2523 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 30,023 psi | 47% | 2352 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 47,805 psi | 75% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,533 psi | 82% | 2769 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 53,113 psi | 83% | 2733 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,952 psi | 80% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,241 psi | 79% | 2664 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,701 psi | 72% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,695 psi | 59% | 2477 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 38,203 psi | 60% | 2507 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 35,839 psi | 56% | 2497 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,879 psi | 78% | 2680 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,473 psi | 79% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,977 psi | 72% | 2667 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,193 psi | 69% | 2664 fps | 95.1% |
| Norma MRP | <<locked>> | 92% | 39,378 psi | 62% | 2664 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,287 psi | 54% | 2470 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,963 psi | 72% | 2687 fps | 99.8% |
| Ramshot Grand | <<locked>> | 96% | 47,805 psi | 75% | 2799 fps | 95% |
| Ramshot Hunter | <<locked>> | 82% | 35,462 psi | 56% | 2507 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 96% | 41,263 psi | 65% | 2651 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 53,069 psi | 83% | 2756 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,084 psi | 83% | 2772 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,179 psi | 69% | 2612 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,864 psi | 78% | 2789 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,350 psi | 63% | 2661 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,910 psi | 53% | 2487 fps | 96.5% |
| ReloadSwiss RS 70 | 57.4 gr | 80% | 33,359 psi | 52% | 2487 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 54,056 psi | 85% | 2710 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,471 psi | 74% | 2635 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,089 psi | 64% | 2572 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,138 psi | 75% | 2703 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 44,715 psi | 70% | 2700 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 41,249 psi | 65% | 2546 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,695 psi | 59% | 2477 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,952 psi | 80% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,701 psi | 72% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,203 psi | 60% | 2507 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,032 psi | 66% | 2618 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,779 psi | 81% | 2736 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,371 psi | 77% | 2703 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,734 psi | 80% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,714 psi | 67% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,262 psi | 62% | 2474 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,295 psi | 69% | 2694 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,589 psi | 79% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,547 psi | 81% | 2726 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,553 psi | 65% | 2572 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 53,026 psi | 83% | 2753 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 30,821 psi | 48% | 2428 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 39,987 psi | 63% | 2579 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 37,057 psi | 58% | 2526 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,109 psi | 75% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,456 psi | 74% | 2602 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,181 psi | 74% | 2608 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,549 psi | 56% | 2425 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 37,086 psi | 58% | 2500 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 98% | 43,149 psi | 68% | 2628 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 46,934 psi | 74% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,536 psi | 59% | 2539 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 82% | 28,456 psi | 45% | 2365 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,012 psi | 55% | 2444 fps | 99% |
| Winchester 760 | <<locked>> | 80% | 39,407 psi | 62% | 2589 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,324 psi | 41% | 2369 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,499 psi | 73% | 2694 fps | 95.8% |
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 .311 | 180gr | Norma Semi Soft Point. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,966 fps. Accurate 3100 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 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.311" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .300 WSM with the .311 | 180gr | Norma Semi Soft Point 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.