Load Specifications
Load data in caliber 7 mm WSM with .284 | 175gr | Speer TBBC bullet and 77 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 Winchester StaBALL HD.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 57,305 psi | 90% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,114 psi | 86% | 2723 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,651 psi | 87% | 2841 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 56,217 psi | 88% | 2680 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,564 psi | 87% | 2779 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 56,956 psi | 89% | 2838 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,645 psi | 75% | 2684 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,438 psi | 67% | 2648 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,595 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,941 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,913 psi | 89% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,332 psi | 87% | 2769 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,840 psi | 89% | 2835 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,389 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,548 psi | 84% | 2812 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,462 psi | 85% | 2838 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,230 psi | 87% | 2746 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 55,985 psi | 88% | 2822 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2753 fps | 98.7% |
| Bofors RP5 | <<locked>> | 96% | 56,840 psi | 89% | 2835 fps | 99.8% |
| Bofors RP7 | <<locked>> | 86% | 57,464 psi | 90% | 2723 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 2769 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 86% | 56,623 psi | 89% | 2776 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 55,927 psi | 88% | 2736 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 94% | 57,029 psi | 89% | 2779 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,869 psi | 88% | 2762 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,260 psi | 88% | 2700 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,489 psi | 82% | 2877 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,072 psi | 89% | 2815 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 58% | 1686 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,622 psi | 87% | 2713 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,477 psi | 87% | 2694 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 55,361 psi | 87% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,505 psi | 85% | 2710 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 54,752 psi | 86% | 2818 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 56,217 psi | 88% | 2697 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,551 psi | 90% | 2740 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 2710 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,318 psi | 88% | 2766 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 2582 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 56,782 psi | 89% | 2858 fps | 100% |
| Norma URP | <<locked>> | 88% | 56,913 psi | 89% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,405 psi | 87% | 2838 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 55,782 psi | 87% | 2766 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 57,609 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,652 psi | 89% | 2776 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,839 psi | 86% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,029 psi | 89% | 2828 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,953 psi | 83% | 2874 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2759 fps | 97% |
| Rottweil R 903 | <<locked>> | 82% | 55,361 psi | 87% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,942 psi | 89% | 2749 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 54,650 psi | 86% | 2756 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 57,464 psi | 90% | 2723 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,217 psi | 88% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,551 psi | 90% | 2740 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,739 psi | 89% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,376 psi | 87% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,419 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,215 psi | 85% | 2753 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 54,998 psi | 86% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,940 psi | 86% | 2694 fps | 98.4% |
| Somchem S365 | <<locked>> | 90% | 57,276 psi | 90% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,201 psi | 87% | 2733 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 56,246 psi | 88% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,390 psi | 87% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,752 psi | 86% | 2717 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 54,534 psi | 85% | 2707 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,869 psi | 89% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,608 psi | 89% | 2854 fps | 98.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 2831 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2769 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,592 psi | 86% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,927 psi | 89% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,405 psi | 87% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,911 psi | 86% | 2726 fps | 99.5% |
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 3100 | <<locked>> | 80% | 33,504 psi | 53% | 2333 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 44,991 psi | 71% | 2572 fps | 100% |
| Accurate MAGPRO | 59.3 gr | 86% | 42,047 psi | 66% | 2602 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 53,040 psi | 83% | 2638 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,536 psi | 59% | 2451 fps | 96.2% |
| ADI AR 2213 | <<locked>> | 86% | 40,886 psi | 64% | 2552 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 94% | 39,204 psi | 61% | 2513 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 90% | 30,937 psi | 48% | 2365 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,056 psi | 85% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,004 psi | 67% | 2575 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,545 psi | 78% | 2684 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,565 psi | 59% | 2448 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,752 psi | 56% | 2448 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,039 psi | 50% | 2359 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,065 psi | 44% | 2274 fps | 95.9% |
| Alliant Reloder-26 | 55.8 gr | 80% | 34,954 psi | 55% | 2490 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,127 psi | 82% | 2694 fps | 95.7% |
| Bofors RP15 | <<locked>> | 84% | 35,476 psi | 56% | 2441 fps | 95.5% |
| Bofors RP30 | <<locked>> | 92% | 37,913 psi | 59% | 2530 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 35,752 psi | 56% | 2448 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 47,703 psi | 75% | 2572 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 37,449 psi | 59% | 2477 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 46,485 psi | 73% | 2615 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,052 psi | 77% | 2628 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 40,756 psi | 64% | 2500 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 40,118 psi | 63% | 2487 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,683 psi | 64% | 2467 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,272 psi | 52% | 2461 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,861 psi | 72% | 2641 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1506 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,236 psi | 68% | 2510 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,211 psi | 77% | 2595 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,714 psi | 67% | 2516 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,001 psi | 63% | 2451 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 39,204 psi | 61% | 2530 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,572 psi | 73% | 2546 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,976 psi | 70% | 2539 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,950 psi | 45% | 2221 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 43,192 psi | 68% | 2546 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 31,256 psi | 49% | 2408 fps | 95% |
| Norma MRP | <<locked>> | 80% | 34,722 psi | 54% | 2454 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,077 psi | 69% | 2556 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,841 psi | 61% | 2536 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,946 psi | 67% | 2556 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 32,227 psi | 51% | 2362 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,355 psi | 44% | 1542 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,634 psi | 82% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,831 psi | 70% | 2592 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,047 psi | 67% | 2608 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,242 psi | 51% | 2434 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,162 psi | 65% | 2631 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 51,866 psi | 81% | 2621 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,841 psi | 61% | 2431 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 36,840 psi | 58% | 2434 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 47,703 psi | 75% | 2572 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,572 psi | 73% | 2546 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,976 psi | 70% | 2539 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,272 psi | 83% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,170 psi | 82% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,701 psi | 72% | 2500 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,535 psi | 57% | 2431 fps | 96.1% |
| Somchem S355 | <<locked>> | 80% | 51,619 psi | 81% | 2618 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,119 psi | 66% | 2477 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,060 psi | 64% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,318 psi | 58% | 2418 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,501 psi | 78% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,600 psi | 71% | 2552 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,387 psi | 51% | 2300 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,875 psi | 70% | 2556 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,114 psi | 57% | 2434 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 40,132 psi | 63% | 2559 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 40,045 psi | 63% | 2549 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 98% | 45,905 psi | 72% | 2710 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,440 psi | 70% | 2516 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,717 psi | 73% | 2618 fps | 99.5% |
| Winchester StaBALL HD | 53.6 gr | 80% | 28,529 psi | 45% | 2379 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,113 psi | 53% | 2346 fps | 95% |
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 82 powders for 7 mm WSM loaded with the .284 | 175gr | Speer TBBC. Winchester StaBALL HD delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,884 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 175.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Winchester StaBALL HD rank at the top here: for 7 mm WSM with the .284 | 175gr | Speer TBBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.