Load Specifications
Load data in caliber 7 mm WSM with .284 | 158gr | Sellier & Bellot XRG bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Norma MRP.
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 2700 | <<locked>> | 82% | 57,261 psi | 90% | 2815 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 56,797 psi | 89% | 2877 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,276 psi | 90% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,795 psi | 86% | 2861 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,303 psi | 87% | 2969 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 56,768 psi | 89% | 2828 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,477 psi | 87% | 2910 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 56,985 psi | 89% | 2969 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,450 psi | 62% | 2697 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,898 psi | 88% | 2910 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,375 psi | 85% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,651 psi | 87% | 2917 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,985 psi | 89% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,172 psi | 86% | 2904 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,492 psi | 89% | 2966 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,443 psi | 77% | 2881 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,737 psi | 84% | 2972 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2946 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,114 psi | 86% | 2815 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,469 psi | 71% | 2808 fps | 96.9% |
| Bofors RP5 | <<locked>> | 98% | 56,492 psi | 89% | 2966 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 54,288 psi | 85% | 2808 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 2828 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 55,274 psi | 87% | 2835 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,666 psi | 89% | 2913 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,043 psi | 88% | 2871 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 57,145 psi | 90% | 2910 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,999 psi | 88% | 2894 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,028 psi | 88% | 2841 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,617 psi | 76% | 2936 fps | 99% |
| Hodgdon Superformance | <<locked>> | 88% | 57,159 psi | 90% | 2956 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,869 psi | 58% | 1775 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,188 psi | 88% | 2808 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,622 psi | 87% | 2848 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,854 psi | 88% | 2835 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,114 psi | 86% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,679 psi | 86% | 2838 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 54,563 psi | 86% | 2946 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,507 psi | 89% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,173 psi | 88% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,375 psi | 85% | 2828 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,473 psi | 79% | 2782 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,348 psi | 90% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,637 psi | 89% | 2904 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 56,173 psi | 88% | 2989 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,000 psi | 89% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,984 psi | 86% | 2963 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 55,854 psi | 88% | 2904 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2900 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 59% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,071 psi | 86% | 2822 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,376 psi | 88% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,766 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,840 psi | 89% | 2969 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,733 psi | 76% | 2930 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,506 psi | 87% | 2815 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,087 psi | 89% | 2881 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 94% | 54,462 psi | 85% | 2890 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 54,288 psi | 85% | 2808 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,173 psi | 88% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,507 psi | 89% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,375 psi | 85% | 2828 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,000 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,869 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,651 psi | 87% | 2785 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,667 psi | 90% | 2940 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 55,317 psi | 87% | 2812 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,114 psi | 86% | 2822 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 56,898 psi | 89% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,926 psi | 86% | 2861 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,521 psi | 89% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,288 psi | 87% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,404 psi | 85% | 2841 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,058 psi | 89% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,578 psi | 86% | 2848 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,014 psi | 88% | 2910 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,217 psi | 88% | 2982 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,924 psi | 81% | 2897 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,752 psi | 86% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,942 psi | 89% | 2917 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,056 psi | 85% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,955 psi | 86% | 2858 fps | 99% |
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 2700 | <<locked>> | 80% | 53,577 psi | 84% | 2759 fps | 99.2% |
| Accurate 3100 | <<locked>> | 80% | 30,835 psi | 48% | 2382 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 53,766 psi | 84% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,655 psi | 65% | 2641 fps | 99.6% |
| Accurate MAGPRO | 64.4 gr | 92% | 48,022 psi | 75% | 2841 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,140 psi | 79% | 2726 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,059 psi | 63% | 2625 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 43,627 psi | 68% | 2730 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 34,650 psi | 54% | 2572 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,797 psi | 59% | 2572 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,082 psi | 80% | 2749 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,219 psi | 63% | 2648 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,992 psi | 72% | 2769 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,943 psi | 63% | 2621 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,782 psi | 59% | 2615 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,747 psi | 47% | 2415 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,689 psi | 47% | 2425 fps | 95.3% |
| Alliant Reloder-26 | 56.6 gr | 80% | 32,068 psi | 50% | 2536 fps | 97.4% |
| Bofors RP15 | <<locked>> | 90% | 39,972 psi | 63% | 2664 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,706 psi | 81% | 2766 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,827 psi | 62% | 2690 fps | 95.1% |
| Bofors RP5 | <<locked>> | 86% | 37,782 psi | 59% | 2615 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,179 psi | 71% | 2648 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,045 psi | 63% | 2648 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 51,880 psi | 81% | 2782 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,497 psi | 68% | 2687 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 46,209 psi | 72% | 2703 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 46,702 psi | 73% | 2736 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,759 psi | 72% | 2720 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,753 psi | 59% | 2536 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,449 psi | 59% | 2680 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 42,612 psi | 67% | 2707 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 43% | 1581 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,765 psi | 83% | 2759 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,727 psi | 64% | 2579 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,427 psi | 73% | 2674 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 39,900 psi | 63% | 2589 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,440 psi | 71% | 2677 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 44,570 psi | 70% | 2759 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 53,098 psi | 83% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,063 psi | 69% | 2628 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 42,366 psi | 66% | 2615 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 30,371 psi | 48% | 2369 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 53,621 psi | 84% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,408 psi | 63% | 2612 fps | 95.7% |
| Norma MRP | 56.3 gr | 82% | 34,461 psi | 54% | 2562 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 41,249 psi | 65% | 2635 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,437 psi | 65% | 2710 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 40,074 psi | 63% | 2625 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 36,825 psi | 58% | 2585 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 44% | 1624 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,764 psi | 81% | 2769 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,805 psi | 76% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,626 psi | 65% | 2664 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,001 psi | 63% | 2671 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,229 psi | 54% | 2592 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 48,834 psi | 77% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,524 psi | 65% | 2605 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 39,204 psi | 61% | 2605 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 45,179 psi | 71% | 2648 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,063 psi | 69% | 2628 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 53,098 psi | 83% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,366 psi | 66% | 2615 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,053 psi | 78% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,414 psi | 77% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,178 psi | 68% | 2575 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,841 psi | 61% | 2602 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,762 psi | 76% | 2710 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,223 psi | 71% | 2651 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,971 psi | 60% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,795 psi | 55% | 2477 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 46,688 psi | 73% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,511 psi | 67% | 2628 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,680 psi | 57% | 2513 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,693 psi | 84% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,061 psi | 66% | 2631 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 33,199 psi | 52% | 2490 fps | 98.5% |
| Vihtavuori N560 | <<locked>> | 90% | 45,788 psi | 72% | 2799 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 42,221 psi | 66% | 2717 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,466 psi | 65% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,671 psi | 68% | 2690 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,397 psi | 41% | 2408 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,957 psi | 61% | 2569 fps | 95.5% |
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 83 powders for 7 mm WSM loaded with the .284 | 158gr | Sellier & Bellot XRG. Winchester StaBALL HD delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,018 fps. ADI AR 2225 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 158.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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. Accurate MAGPRO, Alliant Reloder-26, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 158gr | Sellier & Bellot XRG 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.