Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 175gr | A-Square MONO RN bullet and 66 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 ReloadSwiss RS 80.
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% | 56,333 psi | 88% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,159 psi | 90% | 2785 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,056 psi | 86% | 2864 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 86% | 54,230 psi | 85% | 2795 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 56,072 psi | 88% | 2864 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 98% | 54,099 psi | 85% | 2835 fps | 99.7% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2861 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,388 psi | 82% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 54,447 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,450 psi | 90% | 2841 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,449 psi | 88% | 2858 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 54,375 psi | 85% | 2772 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 54,143 psi | 85% | 2838 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,708 psi | 86% | 2854 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2920 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 56,724 psi | 89% | 2825 fps | 97.9% |
| Bofors RP15 | <<locked>> | 92% | 55,651 psi | 87% | 2844 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 57,464 psi | 90% | 2904 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 56,449 psi | 88% | 2858 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 55,651 psi | 87% | 2854 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 55,288 psi | 87% | 2799 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,346 psi | 85% | 2782 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,679 psi | 86% | 2710 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 56,768 psi | 89% | 2972 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1755 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,855 psi | 89% | 2772 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,334 psi | 90% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,028 psi | 88% | 2779 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 90% | 54,244 psi | 85% | 2844 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,935 psi | 75% | 2769 fps | 98.9% |
| Lovex S065 | <<locked>> | 82% | 57,072 psi | 89% | 2749 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,521 psi | 87% | 2749 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 54,447 psi | 85% | 2740 fps | 100% |
| Norma 204 | <<locked>> | 82% | 54,201 psi | 85% | 2772 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 48,602 psi | 76% | 2792 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 56,333 psi | 88% | 2874 fps | 100% |
| Norma URP | <<locked>> | 82% | 55,317 psi | 87% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,129 psi | 86% | 2864 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 54,128 psi | 85% | 2772 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 57,682 psi | 90% | 2858 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,450 psi | 60% | 1798 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,232 psi | 90% | 2805 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,738 psi | 87% | 2835 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 57,537 psi | 90% | 2966 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 56,782 psi | 89% | 2930 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 86% | 54,969 psi | 86% | 2766 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 57,203 psi | 90% | 2831 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,072 psi | 89% | 2749 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,521 psi | 87% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,970 psi | 88% | 2703 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,811 psi | 89% | 2828 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 56,231 psi | 88% | 2756 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 56,565 psi | 89% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,464 psi | 90% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,927 psi | 89% | 2756 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,116 psi | 90% | 2785 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 55,999 psi | 88% | 2802 fps | 96% |
| Vihtavuori N550 | <<locked>> | 82% | 55,956 psi | 88% | 2759 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,550 psi | 89% | 2799 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 55,912 psi | 88% | 2874 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 94% | 56,304 psi | 88% | 2864 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 57,464 psi | 90% | 2930 fps | 99% |
| Vihtavuori N570 | <<locked>> | 98% | 54,520 psi | 85% | 2923 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,246 psi | 88% | 2710 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 57,290 psi | 90% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,348 psi | 90% | 2802 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 3100 | <<locked>> | 80% | 40,350 psi | 63% | 2500 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 53,301 psi | 84% | 2730 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 41,611 psi | 65% | 2615 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 44,382 psi | 70% | 2625 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 80% | 39,726 psi | 62% | 2562 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 36,129 psi | 57% | 2480 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 98% | 46,789 psi | 73% | 2789 fps | 95% |
| ADI AR 2225 | <<locked>> | 82% | 28,863 psi | 45% | 2329 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,981 psi | 80% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,280 psi | 69% | 2615 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,321 psi | 63% | 2569 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,102 psi | 61% | 2520 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,750 psi | 53% | 2451 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,656 psi | 68% | 2674 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 47,456 psi | 74% | 2782 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 46,992 psi | 74% | 2654 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 37,623 psi | 59% | 2510 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 35,897 psi | 56% | 2497 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 40,321 psi | 63% | 2569 fps | 98% |
| Hodgdon H1000 | <<locked>> | 82% | 34,432 psi | 54% | 2441 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 80% | 42,322 psi | 66% | 2566 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,582 psi | 65% | 2549 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,008 psi | 75% | 2612 fps | 100% |
| Hodgdon Retumbo | 61.7 gr | 80% | 32,996 psi | 52% | 2480 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,268 psi | 44% | 1572 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,096 psi | 79% | 2667 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 50,343 psi | 79% | 2674 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,598 psi | 68% | 2562 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 80% | 38,450 psi | 60% | 2543 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 92% | 36,593 psi | 57% | 2536 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 53,679 psi | 84% | 2697 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,170 psi | 82% | 2697 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,867 psi | 55% | 2382 fps | 98.6% |
| Norma 204 | <<locked>> | 80% | 50,647 psi | 79% | 2717 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 30,037 psi | 47% | 2385 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 42,583 psi | 67% | 2638 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 51,909 psi | 81% | 2713 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,290 psi | 60% | 2552 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 80% | 50,662 psi | 79% | 2720 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,200 psi | 54% | 2434 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,519 psi | 84% | 2753 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,721 psi | 81% | 2776 fps | 100% |
| ReloadSwiss RS 76 | 66 gr | 80% | 32,010 psi | 50% | 2451 fps | 96.9% |
| ReloadSwiss RS 80 | 73.2 gr | 88% | 38,986 psi | 61% | 2602 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 45,455 psi | 71% | 2602 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 43,947 psi | 69% | 2608 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,679 psi | 84% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,170 psi | 82% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,605 psi | 82% | 2654 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,613 psi | 68% | 2605 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 46,122 psi | 72% | 2592 fps | 97.6% |
| Somchem S365 | <<locked>> | 80% | 49,429 psi | 77% | 2667 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,338 psi | 69% | 2585 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 53,185 psi | 83% | 2703 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,595 psi | 60% | 2464 fps | 98% |
| Vihtavuori N170 | <<locked>> | 94% | 52,373 psi | 82% | 2743 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 52,591 psi | 82% | 2710 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,511 psi | 68% | 2595 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,438 psi | 67% | 2631 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 82% | 37,666 psi | 59% | 2513 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 88% | 40,408 psi | 63% | 2618 fps | 95% |
| Vihtavuori N570 | <<locked>> | 94% | 47,253 psi | 74% | 2792 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,446 psi | 82% | 2657 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,376 psi | 57% | 2566 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,640 psi | 64% | 2516 fps | 98% |
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 72 powders for 7 mm Weath. Mag. loaded with the .284 | 175gr | A-Square MONO RN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,972 fps; across all powders the maximum-charge window runs from 1,755 fps to 2,972 fps. Accurate 8700 gives the best case fill at 100 %, and 72 of the 72 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 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, ADI AR 2225 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, ReloadSwiss RS 80 rank at the top here: for 7 mm Weath. Mag. with the .284 | 175gr | A-Square MONO RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 8700, Alliant Reloder-50, IMR 7977 Enduron 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.