Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 185gr | CutEdge LZR MAX bullet and 52 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Hodgdon Retumbo 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>> | 86% | 55,869 psi | 88% | 2789 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 46,891 psi | 73% | 2769 fps | 97.3% |
| Accurate MAGPRO | <<locked>> | 84% | 55,114 psi | 86% | 2907 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 84% | 57,305 psi | 90% | 2877 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 55,985 psi | 88% | 2900 fps | 100% |
| ADI AR 2217 | <<locked>> | 94% | 54,882 psi | 86% | 2884 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 55,027 psi | 86% | 3015 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 96% | 53,954 psi | 85% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,855 psi | 89% | 2867 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,347 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,592 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,158 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,984 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 56,913 psi | 89% | 2989 fps | 99.4% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2979 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,362 psi | 88% | 2867 fps | 99.4% |
| Bofors RP15 | <<locked>> | 88% | 55,782 psi | 87% | 2881 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 54,781 psi | 86% | 2897 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 56,347 psi | 88% | 2890 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,478 psi | 89% | 2904 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,694 psi | 86% | 2831 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,551 psi | 90% | 2871 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,479 psi | 90% | 2769 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,491 psi | 85% | 2963 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1798 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,071 psi | 86% | 2808 fps | 100% |
| IMR 7828 SSC | <<locked>> | 86% | 54,462 psi | 85% | 2884 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,145 psi | 90% | 2818 fps | 97% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,550 psi | 89% | 2943 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 54,143 psi | 85% | 2762 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,172 psi | 85% | 2907 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,463 psi | 88% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,651 psi | 87% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 53,838 psi | 84% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,943 psi | 61% | 1841 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,998 psi | 86% | 2949 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 53,983 psi | 85% | 2923 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 84% | 57,682 psi | 90% | 2848 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 56,739 psi | 89% | 2858 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 48,820 psi | 77% | 2779 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,391 psi | 88% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,100 psi | 86% | 2785 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 56,855 psi | 89% | 2825 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,913 psi | 89% | 2815 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,912 psi | 88% | 2854 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 84% | 56,246 psi | 88% | 2818 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,869 psi | 88% | 2913 fps | 100% |
| Vihtavuori N565 | <<locked>> | 90% | 56,869 psi | 89% | 2910 fps | 100% |
| Vihtavuori N568 | <<locked>> | 92% | 54,636 psi | 86% | 2927 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 94% | 56,159 psi | 88% | 2995 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,085 psi | 86% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,768 psi | 89% | 2828 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% | 45,614 psi | 71% | 2631 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 40,350 psi | 63% | 2638 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 80% | 47,848 psi | 75% | 2782 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 80% | 50,053 psi | 78% | 2766 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 45,266 psi | 71% | 2720 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 80% | 33,663 psi | 53% | 2474 fps | 97.2% |
| ADI AR 2218 | 81.4 gr | 90% | 40,930 psi | 64% | 2730 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 30,879 psi | 48% | 2444 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,893 psi | 78% | 2759 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,890 psi | 72% | 2720 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,701 psi | 70% | 2641 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,885 psi | 61% | 2602 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,068 psi | 80% | 2822 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 39,015 psi | 61% | 2654 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 92% | 41,756 psi | 65% | 2710 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,294 psi | 68% | 2635 fps | 97.1% |
| Bofors RP15 | <<locked>> | 80% | 42,844 psi | 67% | 2661 fps | 99.7% |
| Bofors RP30 | <<locked>> | 80% | 36,187 psi | 57% | 2546 fps | 98.1% |
| Bofors RP5 | <<locked>> | 80% | 45,890 psi | 72% | 2720 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 80% | 36,666 psi | 57% | 2546 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 47,790 psi | 75% | 2717 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,847 psi | 73% | 2697 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,983 psi | 85% | 2723 fps | 100% |
| Hodgdon Retumbo | 68.3 gr | 80% | 38,087 psi | 60% | 2661 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,443 psi | 76% | 2697 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 44,150 psi | 69% | 2707 fps | 99.4% |
| IMR 7977 Enduron | <<locked>> | 88% | 50,314 psi | 79% | 2707 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 82% | 30,429 psi | 48% | 2421 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 39,247 psi | 62% | 2513 fps | 100% |
| Norma 217 | <<locked>> | 80% | 28,587 psi | 45% | 2385 fps | 97.2% |
| Norma MRP | <<locked>> | 80% | 49,124 psi | 77% | 2789 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,614 psi | 70% | 2723 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 80% | 39,958 psi | 63% | 2598 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,153 psi | 46% | 1644 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,347 psi | 59% | 2638 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 34,142 psi | 54% | 2526 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 50,792 psi | 80% | 2740 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 49,632 psi | 78% | 2749 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 42,598 psi | 67% | 2661 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,284 psi | 77% | 2746 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 51,532 psi | 81% | 2730 fps | 99.7% |
| Somchem S385 | <<locked>> | 80% | 49,719 psi | 78% | 2717 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 43,642 psi | 68% | 2605 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 42,583 psi | 67% | 2615 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 49,429 psi | 77% | 2717 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,689 psi | 76% | 2795 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 80% | 40,379 psi | 63% | 2618 fps | 98.5% |
| Vihtavuori N568 | <<locked>> | 80% | 35,346 psi | 55% | 2543 fps | 95.7% |
| Vihtavuori N570 | 74.4 gr | 84% | 38,972 psi | 61% | 2664 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,758 psi | 69% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,137 psi | 72% | 2661 fps | 99.9% |
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 59 powders for 7-.300 Norma Mag. loaded with the .284 | 185gr | CutEdge LZR MAX. ADI AR 2218 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,015 fps. Accurate 8700 gives the best case fill at 100 %, and 59 of the 59 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 185.0 gr projectile in 0.284" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Alliant Reloder-50, Hodgdon TrailBoss 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. ADI AR 2218, Hodgdon Retumbo, Vihtavuori N570 rank at the top here: for 7-.300 Norma Mag. with the .284 | 185gr | CutEdge LZR MAX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG, Hodgdon US 869, Vihtavuori 20N29 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.