Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 180gr | Berger VLD Hunting bullet and 41 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% | 56,666 psi | 89% | 2812 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2943 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 82% | 56,492 psi | 89% | 2920 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 56,550 psi | 89% | 2913 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 57,493 psi | 90% | 3058 fps | 99.9% |
| ADI AR 2225 | <<locked>> | 92% | 56,710 psi | 89% | 2936 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 57,116 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 55,550 psi | 87% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,681 psi | 89% | 2897 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 55,492 psi | 87% | 2966 fps | 99.5% |
| Alliant Reloder-50 | <<locked>> | 94% | 55,869 psi | 88% | 2966 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 56,173 psi | 88% | 2884 fps | 99.6% |
| Bofors RP15 | <<locked>> | 84% | 56,710 psi | 89% | 2907 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 56,637 psi | 89% | 2927 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 57,116 psi | 90% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 53,896 psi | 84% | 2871 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 57,551 psi | 90% | 2890 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 56,826 psi | 89% | 2995 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,203 psi | 60% | 1864 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 55,361 psi | 87% | 2910 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 57,087 psi | 89% | 2844 fps | 97.7% |
| IMR 8133 Enduron | <<locked>> | 94% | 55,709 psi | 87% | 2927 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 54,853 psi | 86% | 2844 fps | 96.3% |
| Lovex S071 | <<locked>> | 86% | 55,492 psi | 87% | 2792 fps | 100% |
| Norma 217 | <<locked>> | 94% | 57,450 psi | 90% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 56,927 psi | 89% | 2933 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 56,869 psi | 89% | 2982 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 84% | 55,187 psi | 86% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,421 psi | 62% | 1909 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 57,624 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 56,521 psi | 89% | 2959 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 54,853 psi | 86% | 2844 fps | 96.3% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 55,143 psi | 86% | 2887 fps | 99% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 52,286 psi | 82% | 2861 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 84% | 57,217 psi | 90% | 2835 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,913 psi | 89% | 2887 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 84% | 54,462 psi | 85% | 2881 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 56,666 psi | 89% | 2959 fps | 100% |
| Vihtavuori N570 | <<locked>> | 88% | 54,607 psi | 86% | 2969 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 57,435 psi | 90% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,753 psi | 89% | 2844 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% | 53,069 psi | 83% | 2759 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 39,929 psi | 63% | 2628 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 80% | 52,620 psi | 82% | 2858 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,856 psi | 62% | 2625 fps | 99.3% |
| ADI AR 2218 | 84.1 gr | 82% | 36,796 psi | 58% | 2635 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 37,173 psi | 58% | 2602 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 53,330 psi | 84% | 2854 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 52,040 psi | 82% | 2762 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 46,325 psi | 73% | 2736 fps | 100% |
| Alliant Reloder-33 | 83.5 gr | 80% | 38,189 psi | 60% | 2628 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 84% | 38,711 psi | 61% | 2631 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,429 psi | 77% | 2769 fps | 98.9% |
| Bofors RP15 | <<locked>> | 80% | 49,806 psi | 78% | 2799 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 43,265 psi | 68% | 2697 fps | 99.7% |
| Bofors RP5 | <<locked>> | 80% | 53,330 psi | 84% | 2854 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 43,381 psi | 68% | 2694 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,722 psi | 84% | 2831 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 45,832 psi | 72% | 2815 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,718 psi | 45% | 1667 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 51,532 psi | 81% | 2848 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 47,094 psi | 74% | 2674 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 80% | 34,664 psi | 54% | 2523 fps | 97.8% |
| Lovex D100 | <<locked>> | 88% | 51,053 psi | 80% | 2779 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 45,861 psi | 72% | 2644 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,404 psi | 55% | 2552 fps | 99.5% |
| Ramshot Grand | <<locked>> | 80% | 52,910 psi | 83% | 2871 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 52,837 psi | 83% | 2913 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 80% | 47,776 psi | 75% | 2743 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,573 psi | 46% | 1706 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,847 psi | 72% | 2795 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,916 psi | 66% | 2700 fps | 98.7% |
| Shooters World 50 BMG | <<locked>> | 88% | 51,053 psi | 80% | 2779 fps | 95.4% |
| SNPE Vectan SP 13 | <<locked>> | 88% | 39,160 psi | 61% | 2589 fps | 95% |
| Vihtavuori 20N29 | <<locked>> | 96% | 45,397 psi | 71% | 2736 fps | 95.4% |
| Vihtavuori N165 | <<locked>> | 80% | 50,299 psi | 79% | 2733 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 43,424 psi | 68% | 2644 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 80% | 47,703 psi | 75% | 2766 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 80% | 42,815 psi | 67% | 2710 fps | 98.4% |
| Vihtavuori N570 | 80.3 gr | 80% | 40,886 psi | 64% | 2703 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 53,330 psi | 84% | 2854 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 53,142 psi | 83% | 2792 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 41 powders for 7 mm KM Katzmaier loaded with the .284 | 180gr | Berger VLD Hunting. ADI AR 2218 delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,058 fps. Accurate 8700 gives the best case fill at 100 %, and 41 of the 41 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 180.0 gr projectile in 0.284" calls for a 1:9.5 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 | 180gr | Berger VLD Hunting 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.