Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 160gr | Prvi Partizan PSP BT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Ramshot Grand and Alliant Reloder-26.
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>> | 94% | 56,478 psi | 89% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,925 psi | 85% | 2851 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,114 psi | 86% | 2969 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 90% | 54,679 psi | 86% | 2907 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 56,101 psi | 88% | 2969 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,488 psi | 79% | 2871 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,136 psi | 71% | 2831 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,027 psi | 86% | 2904 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,824 psi | 86% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,985 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,375 psi | 85% | 2897 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,173 psi | 88% | 2963 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,464 psi | 90% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,128 psi | 85% | 2969 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,624 psi | 90% | 2927 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 55,347 psi | 87% | 2949 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2940 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 56,173 psi | 88% | 2963 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 56,246 psi | 88% | 2851 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 2959 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 55,579 psi | 87% | 2904 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,578 psi | 86% | 2861 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 56,072 psi | 88% | 2907 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,056 psi | 86% | 2890 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,085 psi | 86% | 2828 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,115 psi | 88% | 2943 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 58% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,331 psi | 85% | 2835 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,624 psi | 90% | 2874 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,259 psi | 85% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,101 psi | 89% | 2890 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 54,099 psi | 85% | 2946 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 54,911 psi | 86% | 2822 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,579 psi | 89% | 2871 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,479 psi | 90% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,230 psi | 87% | 2890 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 40,625 psi | 64% | 2753 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 56,043 psi | 88% | 2986 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,072 psi | 88% | 2887 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,839 psi | 86% | 2969 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 54,839 psi | 86% | 2894 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,377 psi | 90% | 2963 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,971 psi | 60% | 1850 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,882 psi | 84% | 2871 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,927 psi | 88% | 2953 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 3068 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,387 psi | 81% | 2949 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 57,667 psi | 90% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,753 psi | 87% | 2877 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 57,435 psi | 90% | 2943 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 56,246 psi | 88% | 2851 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,911 psi | 86% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,579 psi | 89% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,203 psi | 90% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,595 psi | 90% | 2825 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,985 psi | 89% | 2936 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,101 psi | 89% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,290 psi | 90% | 2867 fps | 98.5% |
| Somchem S365 | <<locked>> | 88% | 56,652 psi | 89% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,346 psi | 85% | 2861 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 54,882 psi | 86% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,143 psi | 85% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,421 psi | 90% | 2894 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,869 psi | 89% | 2884 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,115 psi | 88% | 2910 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,825 psi | 87% | 2979 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 55,724 psi | 87% | 2959 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2956 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,188 psi | 90% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,796 psi | 87% | 2907 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,477 psi | 87% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,201 psi | 85% | 2854 fps | 99.3% |
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% | 35,273 psi | 55% | 2487 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 47,152 psi | 74% | 2740 fps | 100% |
| Accurate MAGPRO | 66.6 gr | 86% | 44,498 psi | 70% | 2776 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 39,262 psi | 62% | 2615 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 40,118 psi | 63% | 2661 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 94% | 41,162 psi | 65% | 2680 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 32,503 psi | 51% | 2520 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,639 psi | 62% | 2615 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,107 psi | 71% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,025 psi | 82% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,276 psi | 62% | 2608 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,608 psi | 59% | 2608 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,779 psi | 53% | 2513 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,457 psi | 46% | 2421 fps | 96% |
| Alliant Reloder-26 | 62.7 gr | 80% | 37,159 psi | 58% | 2654 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,068 psi | 80% | 2815 fps | 95.1% |
| Bofors RP15 | <<locked>> | 84% | 37,289 psi | 58% | 2598 fps | 95.6% |
| Bofors RP30 | <<locked>> | 90% | 37,652 psi | 59% | 2638 fps | 95% |
| Bofors RP5 | <<locked>> | 82% | 37,608 psi | 59% | 2608 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 49,530 psi | 78% | 2740 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 39,465 psi | 62% | 2648 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 48,631 psi | 76% | 2789 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 51,082 psi | 80% | 2802 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,830 psi | 67% | 2671 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,076 psi | 66% | 2654 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,554 psi | 67% | 2628 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,983 psi | 55% | 2621 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 48,298 psi | 76% | 2815 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 44% | 1614 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,063 psi | 71% | 2674 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,923 psi | 80% | 2766 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,715 psi | 70% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,611 psi | 65% | 2608 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 86% | 41,176 psi | 65% | 2697 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 48,443 psi | 76% | 2717 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,934 psi | 74% | 2710 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,342 psi | 48% | 2365 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 45,092 psi | 71% | 2713 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 33,243 psi | 52% | 2569 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 36,709 psi | 58% | 2615 fps | 97% |
| Norma URP | <<locked>> | 80% | 46,209 psi | 72% | 2726 fps | 100% |
| Ramshot Grand | 64.8 gr | 86% | 40,930 psi | 64% | 2703 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 44,962 psi | 70% | 2723 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 34,084 psi | 53% | 2523 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 1654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,094 psi | 74% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,237 psi | 71% | 2779 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,879 psi | 50% | 2533 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,280 psi | 69% | 2815 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 54,157 psi | 85% | 2799 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,625 psi | 64% | 2595 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,522 psi | 60% | 2592 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 49,530 psi | 78% | 2740 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,443 psi | 76% | 2717 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,934 psi | 74% | 2710 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,795 psi | 84% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,413 psi | 74% | 2664 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,203 psi | 60% | 2585 fps | 96.1% |
| Somchem S355 | <<locked>> | 80% | 53,722 psi | 84% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,019 psi | 69% | 2638 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 43,236 psi | 68% | 2684 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,160 psi | 61% | 2579 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 51,590 psi | 81% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,543 psi | 75% | 2720 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,953 psi | 53% | 2451 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 46,978 psi | 74% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,869 psi | 59% | 2589 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 42,511 psi | 67% | 2733 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 90% | 42,685 psi | 67% | 2723 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 96% | 45,658 psi | 72% | 2828 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,543 psi | 73% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,849 psi | 77% | 2792 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,110 psi | 47% | 2533 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,723 psi | 56% | 2500 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 74 powders for 7 mm Weath. Mag. loaded with the .284 | 160gr | Prvi Partizan PSP BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 160.0 gr projectile in 0.284" calls for a 1:11.5 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, Ramshot Grand, Alliant Reloder-26 rank at the top here: for 7 mm Weath. Mag. with the .284 | 160gr | Prvi Partizan PSP BT 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.