Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 156gr | Lapua Naturalis bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Accurate MAGPRO 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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,853 psi | 90% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,692 psi | 87% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 52,997 psi | 87% | 3009 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 90% | 52,924 psi | 87% | 2949 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 54,027 psi | 89% | 3005 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,747 psi | 80% | 2904 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,540 psi | 71% | 2867 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 53,171 psi | 87% | 2946 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 53,171 psi | 87% | 2946 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,939 psi | 87% | 2953 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,925 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,562 psi | 86% | 2940 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,128 psi | 89% | 3005 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 51,938 psi | 85% | 2930 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,909 psi | 85% | 3015 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,374 psi | 88% | 2992 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 2979 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 54,128 psi | 89% | 3005 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 54,897 psi | 90% | 2894 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,476 psi | 88% | 2989 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 54,085 psi | 89% | 2949 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 52,997 psi | 87% | 2900 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 54,056 psi | 89% | 2943 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,069 psi | 87% | 2927 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,490 psi | 88% | 2877 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,417 psi | 88% | 3107 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 53,940 psi | 89% | 2982 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 61% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,924 psi | 87% | 2881 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,794 psi | 87% | 2861 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 52,895 psi | 87% | 2890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,141 psi | 86% | 2874 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 94% | 52,083 psi | 86% | 2986 fps | 98.3% |
| Lovex S065 | <<locked>> | 84% | 53,635 psi | 88% | 2867 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,069 psi | 85% | 2864 fps | 99.8% |
| Lovex S071 | <<locked>> | 98% | 52,634 psi | 86% | 2887 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,606 psi | 88% | 2933 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 39,436 psi | 65% | 2799 fps | 97.9% |
| Norma MRP | <<locked>> | 92% | 53,925 psi | 89% | 3031 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 54,520 psi | 90% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,475 psi | 86% | 3002 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 53,229 psi | 87% | 2940 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,505 psi | 89% | 2995 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 63% | 1886 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,330 psi | 86% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,041 psi | 89% | 3002 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 3107 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,226 psi | 81% | 2989 fps | 96.9% |
| Rottweil R 904 | <<locked>> | 90% | 54,201 psi | 89% | 2917 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 90% | 52,040 psi | 85% | 2927 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 84% | 54,897 psi | 90% | 2894 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,635 psi | 88% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,069 psi | 85% | 2864 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,794 psi | 87% | 2815 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,056 psi | 90% | 2979 fps | 99.4% |
| Somchem S361 | <<locked>> | 88% | 52,214 psi | 86% | 2851 fps | 97.5% |
| Somchem S365 | <<locked>> | 88% | 54,723 psi | 90% | 2940 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,837 psi | 87% | 2904 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 53,693 psi | 88% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,678 psi | 86% | 2871 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,069 psi | 85% | 2881 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 84% | 52,083 psi | 86% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,592 psi | 90% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,737 psi | 88% | 3018 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 53,853 psi | 88% | 3005 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,386 psi | 83% | 2995 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 51,851 psi | 85% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,085 psi | 89% | 2949 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,388 psi | 86% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,373 psi | 86% | 2894 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 34,940 psi | 57% | 2546 fps | 97.6% |
| Accurate 4350 | <<locked>> | 80% | 46,209 psi | 76% | 2792 fps | 100% |
| Accurate MAGPRO | 65.6 gr | 88% | 46,166 psi | 76% | 2884 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 38,348 psi | 63% | 2657 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 41,800 psi | 69% | 2766 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 40,176 psi | 66% | 2723 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 32,068 psi | 53% | 2572 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,740 psi | 64% | 2661 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,740 psi | 64% | 2661 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,714 psi | 72% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,517 psi | 83% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,377 psi | 63% | 2654 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,666 psi | 60% | 2657 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,199 psi | 55% | 2569 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,138 psi | 48% | 2477 fps | 95.9% |
| Alliant Reloder-26 | 60.3 gr | 80% | 36,085 psi | 59% | 2707 fps | 99.1% |
| Bofors RP15 | <<locked>> | 84% | 36,521 psi | 60% | 2651 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 39,001 psi | 64% | 2746 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 36,666 psi | 60% | 2657 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 48,718 psi | 80% | 2789 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 38,464 psi | 63% | 2687 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 47,500 psi | 78% | 2838 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 49,835 psi | 82% | 2844 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 44,585 psi | 73% | 2769 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,772 psi | 72% | 2756 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,640 psi | 68% | 2680 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,564 psi | 60% | 2733 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,760 psi | 77% | 2858 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 46% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,005 psi | 72% | 2720 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,690 psi | 82% | 2808 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,758 psi | 72% | 2733 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,381 psi | 71% | 2710 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 40,205 psi | 66% | 2743 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,703 psi | 78% | 2766 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,050 psi | 76% | 2756 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 30,371 psi | 50% | 2428 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 43,903 psi | 72% | 2756 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 32,590 psi | 54% | 2621 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 35,810 psi | 59% | 2667 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 45,049 psi | 74% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,856 psi | 65% | 2749 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,743 psi | 72% | 2769 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 84% | 33,417 psi | 55% | 2569 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 47% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,847 psi | 75% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,932 psi | 72% | 2828 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,446 psi | 55% | 2644 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,788 psi | 75% | 2923 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 39,711 psi | 65% | 2638 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,855 psi | 62% | 2644 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 48,718 psi | 80% | 2789 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,703 psi | 78% | 2766 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,050 psi | 76% | 2756 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,586 psi | 76% | 2710 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,521 psi | 62% | 2638 fps | 95.9% |
| Somchem S361 | <<locked>> | 82% | 43,207 psi | 71% | 2684 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,090 psi | 69% | 2733 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,479 psi | 63% | 2628 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 50,415 psi | 83% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,398 psi | 76% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,578 psi | 58% | 2556 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 45,847 psi | 75% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,318 psi | 61% | 2648 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 41,234 psi | 68% | 2779 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 41,336 psi | 68% | 2766 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 47,007 psi | 77% | 2930 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,353 psi | 74% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,500 psi | 78% | 2838 fps | 99.3% |
| Winchester StaBALL HD | 57.9 gr | 80% | 29,631 psi | 49% | 2589 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,449 psi | 61% | 2605 fps | 95.7% |
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 71 powders for 7 mm Blaser Mag. loaded with the .284 | 156gr | Lapua Naturalis. Hodgdon Retumbo delivers the highest muzzle velocity at 3,107 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,107 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:10.0 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. Winchester StaBALL HD, Accurate MAGPRO, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 156gr | Lapua Naturalis 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.