Load Specifications
Load data in caliber 7-.300 Norma Mag. with .284 | 190gr | Hornady A-Tip Match 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>> | 84% | 56,173 psi | 88% | 2753 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2808 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 82% | 55,114 psi | 86% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 56,840 psi | 89% | 2835 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,854 psi | 88% | 2861 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,042 psi | 86% | 2848 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 55,317 psi | 87% | 2986 fps | 99.7% |
| ADI AR 2225 | <<locked>> | 94% | 54,737 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,463 psi | 88% | 2825 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,391 psi | 88% | 2851 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,824 psi | 86% | 2756 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,390 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,319 psi | 90% | 2959 fps | 99.6% |
| Alliant Reloder-50 | <<locked>> | 98% | 57,363 psi | 90% | 2956 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,840 psi | 88% | 2828 fps | 99.5% |
| Bofors RP15 | <<locked>> | 86% | 55,840 psi | 88% | 2844 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,317 psi | 87% | 2864 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,391 psi | 88% | 2851 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,391 psi | 88% | 2861 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,462 psi | 85% | 2792 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,217 psi | 90% | 2835 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,984 psi | 86% | 2930 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,058 psi | 60% | 1785 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,520 psi | 85% | 2766 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 54,505 psi | 85% | 2844 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 56,681 psi | 89% | 2782 fps | 97.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,522 psi | 90% | 2917 fps | 100% |
| Lovex D100 | <<locked>> | 94% | 57,609 psi | 90% | 2838 fps | 96.6% |
| Lovex S071 | <<locked>> | 88% | 54,694 psi | 86% | 2733 fps | 100% |
| Norma 217 | <<locked>> | 96% | 55,216 psi | 87% | 2881 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,434 psi | 88% | 2864 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,782 psi | 87% | 2867 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,027 psi | 85% | 2795 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,175 psi | 61% | 1827 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,463 psi | 87% | 2913 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,592 psi | 86% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 57,087 psi | 89% | 2805 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,507 psi | 89% | 2818 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 94% | 57,609 psi | 90% | 2838 fps | 96.6% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 53,055 psi | 83% | 2815 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,144 psi | 88% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,608 psi | 89% | 2785 fps | 100% |
| Vihtavuori 24N41 | <<locked>> | 98% | 56,898 psi | 89% | 2884 fps | 96% |
| Vihtavuori N165 | <<locked>> | 86% | 56,739 psi | 89% | 2776 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,028 psi | 88% | 2822 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 82% | 56,405 psi | 88% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,724 psi | 87% | 2874 fps | 100% |
| Vihtavuori N565 | <<locked>> | 88% | 57,130 psi | 90% | 2874 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 55,158 psi | 86% | 2897 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 92% | 56,681 psi | 89% | 2966 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,608 psi | 87% | 2848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,275 psi | 88% | 2785 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% | 49,182 psi | 77% | 2651 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 38,363 psi | 60% | 2566 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 80% | 51,517 psi | 81% | 2808 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 80% | 53,258 psi | 83% | 2779 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,501 psi | 76% | 2743 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 80% | 36,376 psi | 57% | 2507 fps | 98.5% |
| ADI AR 2218 | 79.5 gr | 86% | 38,508 psi | 60% | 2641 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 80% | 33,765 psi | 53% | 2487 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,011 psi | 83% | 2772 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,240 psi | 77% | 2740 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,182 psi | 76% | 2661 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,279 psi | 66% | 2628 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 36,970 psi | 58% | 2569 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 88% | 39,958 psi | 63% | 2635 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,021 psi | 72% | 2657 fps | 98.1% |
| Bofors RP15 | <<locked>> | 80% | 45,919 psi | 72% | 2684 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 39,508 psi | 62% | 2582 fps | 99.1% |
| Bofors RP5 | <<locked>> | 80% | 49,240 psi | 77% | 2740 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 39,682 psi | 62% | 2579 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 80% | 50,850 psi | 80% | 2733 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,908 psi | 78% | 2717 fps | 99.8% |
| Hodgdon Retumbo | 69.8 gr | 80% | 41,495 psi | 65% | 2697 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,689 psi | 45% | 1594 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,256 psi | 80% | 2713 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 80% | 47,456 psi | 74% | 2730 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 46,920 psi | 74% | 2615 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 80% | 31,386 psi | 49% | 2411 fps | 96.7% |
| Lovex D100 | <<locked>> | 92% | 53,795 psi | 84% | 2779 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 42,496 psi | 67% | 2539 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,778 psi | 50% | 2434 fps | 98.8% |
| Norma MRP | <<locked>> | 80% | 52,692 psi | 83% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,225 psi | 76% | 2749 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 43,337 psi | 68% | 2625 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,428 psi | 46% | 1634 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,959 psi | 64% | 2674 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,695 psi | 59% | 2575 fps | 97.6% |
| Rottweil R 904 | <<locked>> | 80% | 53,592 psi | 84% | 2749 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 52,968 psi | 83% | 2766 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 53,795 psi | 84% | 2779 fps | 95.8% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 40,437 psi | 63% | 2582 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,605 psi | 82% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,011 psi | 83% | 2733 fps | 100% |
| Vihtavuori 24N41 | <<locked>> | 96% | 53,069 psi | 83% | 2822 fps | 95% |
| Vihtavuori N165 | <<locked>> | 80% | 46,717 psi | 73% | 2625 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 42,844 psi | 67% | 2589 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 52,953 psi | 83% | 2730 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,083 psi | 82% | 2815 fps | 100% |
| Vihtavuori N565 | <<locked>> | 80% | 43,787 psi | 69% | 2651 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 80% | 38,769 psi | 61% | 2592 fps | 97.4% |
| Vihtavuori N570 | 74.2 gr | 82% | 39,668 psi | 62% | 2644 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,182 psi | 76% | 2743 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,240 psi | 77% | 2680 fps | 100% |
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 52 powders for 7-.300 Norma Mag. loaded with the .284 | 190gr | Hornady A-Tip Match. ADI AR 2218 delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,785 fps to 2,986 fps. Accurate 8700 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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 | 190gr | Hornady A-Tip Match 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.