Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 175gr | Nosler AccuBond Long Range bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Vihtavuori N570 and Alliant Reloder-50.
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>> | 82% | 55,317 psi | 87% | 2828 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2949 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 82% | 54,897 psi | 86% | 2933 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 54,839 psi | 86% | 2923 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 55,390 psi | 87% | 3061 fps | 99.7% |
| ADI AR 2225 | <<locked>> | 92% | 54,853 psi | 86% | 2946 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 55,521 psi | 87% | 2927 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 54,186 psi | 85% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 55,158 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 57,667 psi | 90% | 3031 fps | 99.6% |
| Alliant Reloder-50 | <<locked>> | 94% | 54,012 psi | 85% | 2966 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 54,998 psi | 86% | 2897 fps | 99.4% |
| Bofors RP15 | <<locked>> | 84% | 55,172 psi | 86% | 2920 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 54,940 psi | 86% | 2936 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 55,521 psi | 87% | 2927 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 56,217 psi | 88% | 2943 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 57,043 psi | 89% | 2920 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,057 psi | 88% | 2904 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 55,114 psi | 86% | 3009 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,247 psi | 60% | 1886 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 57,087 psi | 89% | 2894 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 57,522 psi | 90% | 2976 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 55,738 psi | 87% | 2854 fps | 97.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 57,682 psi | 90% | 2995 fps | 100% |
| Lovex D100 | <<locked>> | 92% | 57,363 psi | 90% | 2913 fps | 96.5% |
| Lovex S071 | <<locked>> | 88% | 57,450 psi | 90% | 2858 fps | 100% |
| Norma 217 | <<locked>> | 94% | 55,550 psi | 87% | 2956 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 55,172 psi | 86% | 2940 fps | 100% |
| Ramshot Magnum | <<locked>> | 84% | 53,737 psi | 84% | 2871 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,305 psi | 62% | 1929 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 55,666 psi | 87% | 2989 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 54,708 psi | 86% | 2966 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 57,363 psi | 90% | 2913 fps | 96.5% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2953 fps | 99% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2864 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 84% | 55,941 psi | 88% | 2851 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 55,419 psi | 87% | 2894 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 86% | 56,623 psi | 89% | 2949 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 54,969 psi | 86% | 2966 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 90% | 56,710 psi | 89% | 3041 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 55,463 psi | 87% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 55,463 psi | 87% | 2858 fps | 100% |
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% | 51,764 psi | 81% | 2776 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 41,437 psi | 65% | 2694 fps | 96% |
| ADI AR 2213 | <<locked>> | 80% | 51,285 psi | 80% | 2874 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 38,566 psi | 60% | 2628 fps | 98.8% |
| ADI AR 2218 | 85.6 gr | 84% | 38,247 psi | 60% | 2700 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 35,969 psi | 56% | 2605 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,011 psi | 82% | 2871 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 50,705 psi | 79% | 2779 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,991 psi | 71% | 2749 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 39,740 psi | 62% | 2697 fps | 95.8% |
| Alliant Reloder-50 | 89 gr | 86% | 40,205 psi | 63% | 2697 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 48,182 psi | 76% | 2779 fps | 98.4% |
| Bofors RP15 | <<locked>> | 80% | 48,385 psi | 76% | 2808 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 42,003 psi | 66% | 2703 fps | 99.4% |
| Bofors RP5 | <<locked>> | 80% | 52,011 psi | 82% | 2871 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,076 psi | 66% | 2703 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 53,388 psi | 84% | 2861 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 52,475 psi | 82% | 2844 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 44,309 psi | 69% | 2828 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,718 psi | 45% | 1686 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 53,592 psi | 84% | 2838 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 50,169 psi | 79% | 2861 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 84% | 48,994 psi | 77% | 2740 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 80% | 33,504 psi | 53% | 2526 fps | 97% |
| Lovex D100 | <<locked>> | 90% | 53,345 psi | 84% | 2848 fps | 95.6% |
| Lovex S071 | <<locked>> | 80% | 44,686 psi | 70% | 2657 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,171 psi | 54% | 2552 fps | 99.1% |
| Ramshot Grand | <<locked>> | 80% | 51,198 psi | 80% | 2877 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 46,253 psi | 72% | 2749 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,559 psi | 46% | 1726 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 44,135 psi | 69% | 2802 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 40,582 psi | 64% | 2703 fps | 98.1% |
| Shooters World 50 BMG | <<locked>> | 90% | 53,345 psi | 84% | 2848 fps | 95.6% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 40,611 psi | 64% | 2651 fps | 95.2% |
| Vihtavuori 20N29 | <<locked>> | 98% | 47,108 psi | 74% | 2799 fps | 95.6% |
| Vihtavuori N165 | <<locked>> | 80% | 49,110 psi | 77% | 2746 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 42,322 psi | 66% | 2651 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 80% | 46,412 psi | 73% | 2776 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 80% | 41,394 psi | 65% | 2713 fps | 97.8% |
| Vihtavuori N570 | 79.9 gr | 80% | 39,552 psi | 62% | 2703 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 51,648 psi | 81% | 2867 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 51,721 psi | 81% | 2802 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 42 powders for 7 mm KM Katzmaier loaded with the .284 | 175gr | Nosler AccuBond Long Range. ADI AR 2218 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,061 fps. Accurate 8700 gives the best case fill at 100 %, and 42 of the 42 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 175.0 gr projectile in 0.284" calls for a 1:9.0 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, Vihtavuori N570, Alliant Reloder-50 rank at the top here: for 7 mm KM Katzmaier with the .284 | 175gr | Nosler AccuBond Long Range 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.