Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 185gr | CutEdge LZR MAX bullet and 45 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-33.
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% | 54,012 psi | 85% | 2743 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 2867 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 82% | 57,363 psi | 90% | 2917 fps | 100% |
| ADI AR 2213 | <<locked>> | 82% | 54,027 psi | 85% | 2848 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,740 psi | 90% | 2897 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,389 psi | 85% | 2979 fps | 99.7% |
| ADI AR 2225 | <<locked>> | 92% | 53,766 psi | 84% | 2864 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,549 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,811 psi | 89% | 2799 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 54,114 psi | 85% | 2828 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,449 psi | 88% | 2949 fps | 99.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,463 psi | 88% | 2943 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 54,288 psi | 85% | 2818 fps | 99.5% |
| Bofors RP15 | <<locked>> | 84% | 54,201 psi | 85% | 2838 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,595 psi | 90% | 2910 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,549 psi | 85% | 2841 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 55,245 psi | 87% | 2858 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 56,231 psi | 88% | 2838 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,245 psi | 87% | 2825 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 53,882 psi | 84% | 2920 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,174 psi | 60% | 1827 fps | 100% |
| Hodgdon US 869 | <<locked>> | 98% | 55,013 psi | 86% | 2867 fps | 96% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,289 psi | 88% | 2815 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 56,710 psi | 89% | 2894 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 55,056 psi | 86% | 2782 fps | 97.4% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,333 psi | 88% | 2907 fps | 100% |
| Lovex D100 | <<locked>> | 92% | 56,101 psi | 88% | 2831 fps | 96.7% |
| Lovex S071 | <<locked>> | 88% | 56,202 psi | 88% | 2772 fps | 100% |
| Norma 217 | <<locked>> | 94% | 54,259 psi | 85% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 54,288 psi | 85% | 2861 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,521 psi | 89% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,233 psi | 61% | 1870 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 54,476 psi | 85% | 2904 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,580 psi | 90% | 2946 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 56,101 psi | 88% | 2831 fps | 96.7% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,956 psi | 88% | 2871 fps | 99.1% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2779 fps | 96.6% |
| Vihtavuori 24N41 | <<locked>> | 96% | 55,912 psi | 88% | 2881 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 84% | 55,071 psi | 86% | 2772 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,317 psi | 85% | 2815 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 86% | 55,593 psi | 87% | 2867 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 53,780 psi | 84% | 2884 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 90% | 55,405 psi | 87% | 2956 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 54,317 psi | 85% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,418 psi | 85% | 2779 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% | 50,575 psi | 79% | 2690 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 40,321 psi | 63% | 2615 fps | 96.1% |
| Accurate MAGPRO | <<locked>> | 80% | 53,374 psi | 84% | 2854 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 50,502 psi | 79% | 2792 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 37,753 psi | 59% | 2552 fps | 98.9% |
| ADI AR 2218 | 82.7 gr | 84% | 37,217 psi | 58% | 2621 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 34,969 psi | 55% | 2526 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,097 psi | 80% | 2789 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,821 psi | 78% | 2700 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,005 psi | 69% | 2667 fps | 100% |
| Alliant Reloder-33 | 82.2 gr | 82% | 38,537 psi | 60% | 2612 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 86% | 38,754 psi | 61% | 2612 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,572 psi | 75% | 2707 fps | 98.6% |
| Bofors RP15 | <<locked>> | 80% | 47,558 psi | 75% | 2730 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 40,930 psi | 64% | 2625 fps | 99.4% |
| Bofors RP5 | <<locked>> | 80% | 51,097 psi | 80% | 2789 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 41,220 psi | 65% | 2625 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 52,678 psi | 83% | 2782 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,721 psi | 81% | 2769 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,352 psi | 68% | 2743 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,601 psi | 45% | 1631 fps | 100% |
| Hodgdon US 869 | <<locked>> | 96% | 51,155 psi | 80% | 2802 fps | 95% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,866 psi | 83% | 2759 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 49,298 psi | 77% | 2779 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 84% | 48,254 psi | 76% | 2664 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 80% | 32,460 psi | 51% | 2448 fps | 97.1% |
| Lovex D100 | <<locked>> | 90% | 52,199 psi | 82% | 2769 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 43,424 psi | 68% | 2572 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,924 psi | 52% | 2470 fps | 99.1% |
| Ramshot Grand | <<locked>> | 80% | 50,198 psi | 79% | 2795 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 45,252 psi | 71% | 2671 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 46% | 1670 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 43,004 psi | 67% | 2720 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,218 psi | 61% | 2618 fps | 98.1% |
| Shooters World 50 BMG | <<locked>> | 90% | 52,199 psi | 82% | 2769 fps | 95.8% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 39,407 psi | 62% | 2569 fps | 95.3% |
| Vihtavuori 20N29 | <<locked>> | 98% | 45,614 psi | 71% | 2717 fps | 95.6% |
| Vihtavuori 24N41 | <<locked>> | 94% | 51,909 psi | 81% | 2815 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 80% | 48,225 psi | 76% | 2667 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 41,307 psi | 65% | 2575 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 80% | 45,237 psi | 71% | 2694 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 80% | 40,321 psi | 63% | 2631 fps | 97.9% |
| Vihtavuori N570 | 77.2 gr | 80% | 38,479 psi | 60% | 2625 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,401 psi | 79% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,923 psi | 80% | 2723 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 45 powders for 7 mm KM Katzmaier loaded with the .284 | 185gr | CutEdge LZR MAX. ADI AR 2218 delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,827 fps to 2,979 fps. Accurate 8700 gives the best case fill at 100 %, and 45 of the 45 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 185.0 gr projectile in 0.284" calls for a 1:7.5 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, Vihtavuori N570, Alliant Reloder-33 rank at the top here: for 7 mm KM Katzmaier with the .284 | 185gr | CutEdge LZR MAX 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.