Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 192gr | CutEdge MTAC bullet and 43 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% | 55,811 psi | 87% | 2720 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2858 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 82% | 55,912 psi | 88% | 2831 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 55,956 psi | 88% | 2825 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 56,666 psi | 89% | 2969 fps | 100% |
| ADI AR 2225 | <<locked>> | 92% | 55,985 psi | 88% | 2844 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,405 psi | 88% | 2822 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 54,868 psi | 86% | 2723 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,144 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 54,520 psi | 85% | 2874 fps | 99.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 54,839 psi | 86% | 2874 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,883 psi | 88% | 2799 fps | 99.8% |
| Bofors RP15 | <<locked>> | 84% | 56,057 psi | 88% | 2818 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 55,941 psi | 88% | 2838 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,405 psi | 88% | 2822 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 57,334 psi | 90% | 2838 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 56,985 psi | 89% | 2802 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 56,202 psi | 88% | 2904 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,174 psi | 60% | 1798 fps | 100% |
| Hodgdon US 869 | <<locked>> | 98% | 57,246 psi | 90% | 2861 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 82% | 54,708 psi | 86% | 2818 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,652 psi | 89% | 2762 fps | 98% |
| IMR 8133 Enduron | <<locked>> | 94% | 54,810 psi | 86% | 2838 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 54,186 psi | 85% | 2759 fps | 96.7% |
| Lovex S071 | <<locked>> | 86% | 54,621 psi | 86% | 2703 fps | 100% |
| Norma 217 | <<locked>> | 94% | 56,507 psi | 89% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 56,188 psi | 88% | 2838 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 56,043 psi | 88% | 2897 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 84% | 54,563 psi | 86% | 2769 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,247 psi | 62% | 1837 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 56,855 psi | 89% | 2887 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 55,579 psi | 87% | 2867 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 54,186 psi | 85% | 2759 fps | 96.7% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 54,157 psi | 85% | 2799 fps | 99.1% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 51,430 psi | 81% | 2779 fps | 97.6% |
| Vihtavuori 24N41 | <<locked>> | 94% | 54,027 psi | 85% | 2808 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 84% | 56,623 psi | 89% | 2746 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,072 psi | 88% | 2799 fps | 99% |
| Vihtavuori N565 | <<locked>> | 86% | 57,551 psi | 90% | 2848 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 56,072 psi | 88% | 2871 fps | 100% |
| Vihtavuori N570 | <<locked>> | 88% | 53,737 psi | 84% | 2881 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 56,637 psi | 89% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,144 psi | 88% | 2756 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% | 52,098 psi | 82% | 2667 fps | 100% |
| Accurate 8700 | <<locked>> | 88% | 36,230 psi | 57% | 2484 fps | 95% |
| ADI AR 2213 | <<locked>> | 80% | 52,098 psi | 82% | 2772 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,160 psi | 61% | 2543 fps | 99.4% |
| ADI AR 2218 | 81.2 gr | 82% | 36,071 psi | 57% | 2552 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 36,419 psi | 57% | 2516 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 52,692 psi | 83% | 2766 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,401 psi | 81% | 2674 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 45,600 psi | 71% | 2648 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 80% | 37,333 psi | 59% | 2543 fps | 95.9% |
| Alliant Reloder-50 | 84.4 gr | 84% | 37,623 psi | 59% | 2543 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,037 psi | 77% | 2690 fps | 99.1% |
| Bofors RP15 | <<locked>> | 80% | 49,081 psi | 77% | 2707 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 42,424 psi | 66% | 2612 fps | 99.8% |
| Bofors RP5 | <<locked>> | 80% | 52,692 psi | 83% | 2766 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 42,917 psi | 67% | 2612 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,214 psi | 83% | 2746 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 45,179 psi | 71% | 2730 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,645 psi | 45% | 1604 fps | 100% |
| Hodgdon US 869 | <<locked>> | 94% | 49,545 psi | 78% | 2733 fps | 95% |
| IMR 7828 SSC | <<locked>> | 80% | 51,140 psi | 80% | 2762 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 46,601 psi | 73% | 2595 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 80% | 33,823 psi | 53% | 2438 fps | 98% |
| Lovex D100 | <<locked>> | 88% | 50,415 psi | 79% | 2700 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 44,976 psi | 70% | 2556 fps | 100% |
| Norma 217 | <<locked>> | 80% | 34,563 psi | 54% | 2467 fps | 99.6% |
| Ramshot Grand | <<locked>> | 80% | 52,228 psi | 82% | 2782 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 52,272 psi | 82% | 2835 fps | 96% |
| Ramshot Magnum | <<locked>> | 80% | 46,876 psi | 73% | 2651 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,501 psi | 46% | 1644 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,034 psi | 71% | 2707 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 40,988 psi | 64% | 2612 fps | 98.9% |
| Shooters World 50 BMG | <<locked>> | 88% | 50,415 psi | 79% | 2700 fps | 95.8% |
| SNPE Vectan SP 13 | <<locked>> | 88% | 38,261 psi | 60% | 2507 fps | 95.3% |
| Vihtavuori 20N29 | <<locked>> | 96% | 44,425 psi | 70% | 2651 fps | 95.7% |
| Vihtavuori 24N41 | <<locked>> | 92% | 50,198 psi | 79% | 2743 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 80% | 49,632 psi | 78% | 2648 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 42,743 psi | 67% | 2562 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 80% | 46,760 psi | 73% | 2677 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 80% | 42,032 psi | 66% | 2628 fps | 98.7% |
| Vihtavuori N570 | 77.6 gr | 80% | 40,219 psi | 63% | 2621 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 52,634 psi | 82% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,402 psi | 82% | 2700 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 44 powders for 7 mm KM Katzmaier loaded with the .284 | 192gr | CutEdge MTAC. ADI AR 2218 delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,798 fps to 2,969 fps. Accurate 8700 gives the best case fill at 100 %, and 44 of the 44 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 192.0 gr projectile in 0.284" calls for a 1:8.0 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 | 192gr | CutEdge MTAC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG 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.