Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 154gr | Norma Soft Point bullet and 55 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 Vihtavuori N570.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 56,753 psi | 89% | 3045 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 54,766 psi | 86% | 3146 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 86% | 55,535 psi | 87% | 3150 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 84% | 54,244 psi | 85% | 3074 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 56,275 psi | 88% | 3150 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 96% | 54,926 psi | 86% | 3123 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 3241 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3205 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,476 psi | 85% | 3071 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,476 psi | 85% | 3071 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,493 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 56,724 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 54,839 psi | 86% | 3045 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,071 psi | 86% | 3120 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,361 psi | 87% | 3136 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,014 psi | 89% | 3222 fps | 98.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3136 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 56,942 psi | 89% | 3107 fps | 98.4% |
| Bofors RP15 | <<locked>> | 90% | 56,144 psi | 88% | 3133 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 55,013 psi | 86% | 3140 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 56,724 psi | 89% | 3143 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 56,536 psi | 89% | 3150 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 55,390 psi | 87% | 3077 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,389 psi | 85% | 3061 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,621 psi | 86% | 2982 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,128 psi | 85% | 3212 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,753 psi | 59% | 1978 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,478 psi | 89% | 3048 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,188 psi | 90% | 3051 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 55,738 psi | 87% | 3054 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 88% | 54,708 psi | 86% | 3130 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3120 fps | 99.7% |
| Lovex S071 | <<locked>> | 92% | 54,882 psi | 86% | 3015 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 53,983 psi | 85% | 3146 fps | 100% |
| Norma MRP | <<locked>> | 86% | 56,855 psi | 89% | 3159 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 55,869 psi | 88% | 3153 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 90% | 54,230 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,754 psi | 61% | 2024 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 54,752 psi | 86% | 3196 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 54,172 psi | 85% | 3159 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 84% | 54,752 psi | 86% | 3041 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 86% | 57,276 psi | 90% | 3114 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 56,884 psi | 89% | 3110 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,144 psi | 88% | 3035 fps | 99.5% |
| Somchem S365 | <<locked>> | 82% | 56,623 psi | 89% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 57,537 psi | 90% | 3077 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 57,566 psi | 90% | 3068 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,594 psi | 89% | 3087 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 86% | 56,869 psi | 89% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,289 psi | 88% | 3163 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 92% | 57,232 psi | 90% | 3153 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 94% | 54,853 psi | 86% | 3163 fps | 99% |
| Vihtavuori N570 | <<locked>> | 96% | 56,057 psi | 88% | 3228 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 54,694 psi | 86% | 3140 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,479 psi | 90% | 3077 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 43,366 psi | 68% | 2815 fps | 99.9% |
| Accurate High Country | <<locked>> | 80% | 47,529 psi | 74% | 3012 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 80% | 44,962 psi | 70% | 2949 fps | 97.3% |
| ADI AR 2209 | <<locked>> | 80% | 47,413 psi | 74% | 2953 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 80% | 42,685 psi | 67% | 2890 fps | 97.8% |
| ADI AR 2217 | <<locked>> | 82% | 34,040 psi | 53% | 2674 fps | 95.2% |
| ADI AR 2218 | <<locked>> | 94% | 44,469 psi | 70% | 3009 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 29,182 psi | 46% | 2575 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,761 psi | 75% | 2949 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,761 psi | 75% | 2949 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,311 psi | 74% | 2943 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,424 psi | 68% | 2897 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,105 psi | 66% | 2831 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,477 psi | 57% | 2766 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,790 psi | 75% | 3009 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 45,556 psi | 71% | 3005 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 98% | 48,631 psi | 76% | 3058 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,005 psi | 69% | 2858 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 40,364 psi | 63% | 2828 fps | 98.2% |
| Bofors RP30 | <<locked>> | 80% | 33,997 psi | 53% | 2694 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 43,424 psi | 68% | 2897 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 80% | 34,563 psi | 54% | 2694 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 80% | 45,150 psi | 71% | 2887 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,469 psi | 70% | 2871 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,068 psi | 80% | 2927 fps | 100% |
| Hodgdon Retumbo | 72.3 gr | 80% | 35,621 psi | 56% | 2808 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,282 psi | 44% | 1768 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 52,997 psi | 83% | 2992 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,577 psi | 84% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,195 psi | 72% | 2881 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 80% | 41,365 psi | 65% | 2867 fps | 97.5% |
| IMR 8133 Enduron | <<locked>> | 88% | 34,998 psi | 55% | 2740 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 37,420 psi | 59% | 2687 fps | 99.3% |
| Norma 217 | <<locked>> | 82% | 28,761 psi | 45% | 2579 fps | 95% |
| Norma MRP | <<locked>> | 80% | 46,050 psi | 72% | 2969 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 41,481 psi | 65% | 2884 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 80% | 37,362 psi | 59% | 2753 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,080 psi | 46% | 1811 fps | 100% |
| ReloadSwiss RS 76 | 77.3 gr | 80% | 34,795 psi | 55% | 2779 fps | 98.5% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 39,972 psi | 63% | 2874 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 48,196 psi | 76% | 2923 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 80% | 46,847 psi | 73% | 2933 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,514 psi | 73% | 2927 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 49,182 psi | 77% | 2913 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 52,953 psi | 83% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,398 psi | 74% | 2907 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 41,379 psi | 65% | 2779 fps | 98.9% |
| Vihtavuori N170 | <<locked>> | 90% | 49,516 psi | 78% | 2963 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 46,804 psi | 73% | 2913 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 45,716 psi | 72% | 2966 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 80% | 37,971 psi | 60% | 2772 fps | 96.1% |
| Vihtavuori N568 | <<locked>> | 86% | 41,089 psi | 64% | 2887 fps | 95.8% |
| Vihtavuori N570 | 84.4 gr | 90% | 45,179 psi | 71% | 3015 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,321 psi | 63% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,569 psi | 68% | 2835 fps | 98.9% |
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 55 powders for 7-.300 Norma Mag. loaded with the .284 | 154gr | Norma Soft Point. ADI AR 2218 delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,241 fps. ADI AR 2218 gives the best case fill at 100 %, and 55 of the 55 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 154.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-50 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, Vihtavuori N570 rank at the top here: for 7-.300 Norma Mag. with the .284 | 154gr | Norma Soft Point 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.