Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 175gr | Barnes X S bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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>> | 90% | 55,056 psi | 86% | 2713 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,869 psi | 88% | 2733 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 57,058 psi | 89% | 2861 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 88% | 55,637 psi | 87% | 2785 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 57,101 psi | 89% | 2848 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2815 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,966 psi | 78% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,912 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,274 psi | 87% | 2772 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,609 psi | 90% | 2848 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,608 psi | 87% | 2762 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,781 psi | 86% | 2825 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,970 psi | 88% | 2851 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,069 psi | 82% | 2841 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,607 psi | 86% | 2749 fps | 96.9% |
| Bofors RP15 | <<locked>> | 94% | 56,840 psi | 89% | 2835 fps | 99.8% |
| Bofors RP30 | <<locked>> | 98% | 54,911 psi | 86% | 2838 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 57,609 psi | 90% | 2848 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 57,043 psi | 89% | 2723 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,492 psi | 89% | 2838 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 56,521 psi | 89% | 2776 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,898 psi | 89% | 2785 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,840 psi | 88% | 2769 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,478 psi | 89% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,435 psi | 90% | 2959 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,739 psi | 89% | 2812 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,056 psi | 86% | 2710 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,724 psi | 87% | 2720 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,624 psi | 90% | 2766 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 55,303 psi | 87% | 2831 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,876 psi | 72% | 2710 fps | 98.2% |
| Lovex S065 | <<locked>> | 82% | 55,956 psi | 88% | 2694 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,711 psi | 90% | 2743 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,521 psi | 89% | 2736 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,883 psi | 88% | 2766 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2736 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 57,551 psi | 90% | 2864 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,232 psi | 90% | 2759 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,028 psi | 88% | 2851 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 55,811 psi | 87% | 2766 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,549 psi | 85% | 2789 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,580 psi | 60% | 1759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,550 psi | 87% | 2753 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,884 psi | 89% | 2825 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,244 psi | 85% | 2897 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2917 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 56,492 psi | 89% | 2753 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 55,013 psi | 86% | 2766 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 57,043 psi | 89% | 2723 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,956 psi | 88% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,711 psi | 90% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,013 psi | 86% | 2651 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,592 psi | 86% | 2762 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 54,505 psi | 85% | 2694 fps | 98.6% |
| Somchem S365 | <<locked>> | 84% | 54,607 psi | 86% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,854 psi | 88% | 2746 fps | 100% |
| Unknown powder | <<locked>> | 82% | 57,029 psi | 89% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,143 psi | 86% | 2700 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,129 psi | 86% | 2723 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 54,694 psi | 86% | 2710 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,868 psi | 86% | 2746 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,101 psi | 89% | 2864 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 94% | 54,317 psi | 85% | 2802 fps | 99% |
| Vihtavuori N568 | <<locked>> | 98% | 54,360 psi | 85% | 2854 fps | 98.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2907 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,230 psi | 85% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,782 psi | 89% | 2779 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,925 psi | 85% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,056 psi | 86% | 2733 fps | 99.7% |
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% | 40,350 psi | 63% | 2467 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 52,388 psi | 82% | 2680 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 43,990 psi | 69% | 2631 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 43,149 psi | 68% | 2569 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 38,856 psi | 61% | 2510 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 37,826 psi | 59% | 2487 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 84% | 30,792 psi | 48% | 2359 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,400 psi | 77% | 2677 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,265 psi | 68% | 2566 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,465 psi | 62% | 2523 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,319 psi | 60% | 2484 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,417 psi | 52% | 2418 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,308 psi | 66% | 2631 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 48,631 psi | 76% | 2779 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,457 psi | 76% | 2641 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 36,985 psi | 58% | 2467 fps | 96.4% |
| Bofors RP30 | <<locked>> | 84% | 35,273 psi | 55% | 2461 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 39,465 psi | 62% | 2523 fps | 97.4% |
| Bofors RP7 | <<locked>> | 80% | 53,708 psi | 84% | 2674 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 36,274 psi | 57% | 2451 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,171 psi | 83% | 2726 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,365 psi | 65% | 2513 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,611 psi | 64% | 2497 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,963 psi | 74% | 2566 fps | 100% |
| Hodgdon Retumbo | 56 gr | 80% | 32,721 psi | 51% | 2441 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 53,026 psi | 83% | 2756 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,413 psi | 45% | 1535 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,849 psi | 77% | 2612 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 49,501 psi | 78% | 2628 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,685 psi | 67% | 2507 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 80% | 37,782 psi | 59% | 2497 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 92% | 35,882 psi | 56% | 2497 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 52,707 psi | 83% | 2648 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,184 psi | 80% | 2644 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 35,302 psi | 55% | 2359 fps | 98.4% |
| Norma 204 | <<locked>> | 80% | 49,327 psi | 77% | 2661 fps | 99.1% |
| Norma 217 | <<locked>> | 88% | 32,010 psi | 50% | 2418 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 41,539 psi | 65% | 2595 fps | 99% |
| Norma URP | <<locked>> | 80% | 50,531 psi | 79% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,478 psi | 59% | 2503 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 49,385 psi | 77% | 2667 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,808 psi | 53% | 2398 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,037 psi | 46% | 1572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,996 psi | 81% | 2703 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,806 psi | 78% | 2720 fps | 100% |
| ReloadSwiss RS 76 | 60 gr | 80% | 31,908 psi | 50% | 2421 fps | 96.4% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,466 psi | 63% | 2615 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 44,541 psi | 70% | 2549 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,975 psi | 67% | 2559 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 80% | 53,708 psi | 84% | 2674 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,707 psi | 83% | 2648 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,184 psi | 80% | 2644 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,735 psi | 81% | 2602 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,656 psi | 67% | 2552 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 45,339 psi | 71% | 2539 fps | 96.9% |
| Somchem S365 | <<locked>> | 80% | 48,080 psi | 75% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,627 psi | 68% | 2539 fps | 98.9% |
| Unknown powder | <<locked>> | 80% | 53,592 psi | 84% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,837 psi | 81% | 2651 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,116 psi | 60% | 2425 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 80% | 51,503 psi | 81% | 2661 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,989 psi | 67% | 2556 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,408 psi | 65% | 2582 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 39,610 psi | 62% | 2530 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 90% | 41,800 psi | 66% | 2625 fps | 95% |
| Vihtavuori N570 | <<locked>> | 98% | 51,430 psi | 81% | 2844 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,821 psi | 80% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,403 psi | 84% | 2730 fps | 100% |
| Winchester StaBALL HD | 57.6 gr | 80% | 35,114 psi | 55% | 2536 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,987 psi | 63% | 2470 fps | 97.4% |
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 70 powders for 7 mm Weath. Mag. loaded with the .284 | 175gr | Barnes X S. Hodgdon Retumbo delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,959 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for 7 mm Weath. Mag. with the .284 | 175gr | Barnes X S 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.