Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 180gr | Berger VLD Target 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% | 56,449 psi | 88% | 2805 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 2936 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 82% | 56,260 psi | 88% | 2917 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 56,362 psi | 88% | 2910 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 57,130 psi | 90% | 3054 fps | 99.9% |
| ADI AR 2225 | <<locked>> | 92% | 56,492 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 56,855 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 82% | 55,347 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 56,449 psi | 88% | 2890 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 55,100 psi | 86% | 2959 fps | 99.5% |
| Alliant Reloder-50 | <<locked>> | 94% | 55,709 psi | 87% | 2963 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 55,985 psi | 88% | 2881 fps | 99.6% |
| Bofors RP15 | <<locked>> | 84% | 56,507 psi | 89% | 2904 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 56,449 psi | 88% | 2923 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 56,855 psi | 89% | 2907 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 57,566 psi | 90% | 2923 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 57,348 psi | 90% | 2887 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 56,594 psi | 89% | 2989 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,232 psi | 60% | 1860 fps | 100% |
| IMR 7828 SSC | <<locked>> | 82% | 55,129 psi | 86% | 2904 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 56,927 psi | 89% | 2844 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 55,492 psi | 87% | 2927 fps | 100% |
| Lovex D100 | <<locked>> | 90% | 54,694 psi | 86% | 2841 fps | 96.3% |
| Lovex S071 | <<locked>> | 86% | 55,288 psi | 87% | 2789 fps | 100% |
| Norma 217 | <<locked>> | 94% | 57,246 psi | 90% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 56,710 psi | 89% | 2927 fps | 100% |
| Ramshot LRT | <<locked>> | 94% | 56,507 psi | 89% | 2979 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 84% | 54,998 psi | 86% | 2851 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,291 psi | 62% | 1906 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 57,203 psi | 90% | 2972 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 56,159 psi | 88% | 2956 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 90% | 54,694 psi | 86% | 2841 fps | 96.3% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 54,824 psi | 86% | 2884 fps | 98.9% |
| Vihtavuori 20N29ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 2854 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 84% | 57,014 psi | 89% | 2831 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 56,579 psi | 89% | 2881 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 84% | 54,259 psi | 85% | 2877 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 56,478 psi | 89% | 2956 fps | 100% |
| Vihtavuori N570 | <<locked>> | 88% | 54,186 psi | 85% | 2963 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 57,130 psi | 90% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 56,536 psi | 89% | 2841 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% | 52,852 psi | 83% | 2756 fps | 100% |
| Accurate 8700 | <<locked>> | 90% | 39,624 psi | 62% | 2621 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 80% | 52,402 psi | 82% | 2854 fps | 100% |
| ADI AR 2217 | <<locked>> | 80% | 39,653 psi | 62% | 2621 fps | 99.2% |
| ADI AR 2218 | 85.8 gr | 84% | 39,363 psi | 62% | 2700 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 36,970 psi | 58% | 2595 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 53,113 psi | 83% | 2851 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 51,808 psi | 81% | 2759 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 46,122 psi | 72% | 2733 fps | 100% |
| Alliant Reloder-33 | 83.2 gr | 80% | 38,014 psi | 60% | 2621 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 84% | 38,551 psi | 60% | 2628 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 49,269 psi | 77% | 2766 fps | 98.8% |
| Bofors RP15 | <<locked>> | 80% | 49,603 psi | 78% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 43,047 psi | 67% | 2694 fps | 99.6% |
| Bofors RP5 | <<locked>> | 80% | 53,113 psi | 83% | 2851 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 43,308 psi | 68% | 2690 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 53,519 psi | 84% | 2828 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 45,571 psi | 71% | 2815 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,703 psi | 45% | 1663 fps | 100% |
| IMR 7828 SSC | <<locked>> | 80% | 51,314 psi | 80% | 2844 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 82% | 46,920 psi | 74% | 2671 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 80% | 34,476 psi | 54% | 2520 fps | 97.7% |
| Lovex D100 | <<locked>> | 88% | 50,908 psi | 80% | 2776 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 45,643 psi | 72% | 2641 fps | 100% |
| Norma 217 | <<locked>> | 80% | 35,215 psi | 55% | 2546 fps | 99.4% |
| Ramshot Grand | <<locked>> | 80% | 52,678 psi | 83% | 2867 fps | 100% |
| Ramshot LRT | <<locked>> | 92% | 52,663 psi | 83% | 2910 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 80% | 47,572 psi | 75% | 2740 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,573 psi | 46% | 1703 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 45,426 psi | 71% | 2789 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 41,713 psi | 65% | 2694 fps | 98.6% |
| Shooters World 50 BMG | <<locked>> | 88% | 50,908 psi | 80% | 2776 fps | 95.3% |
| SNPE Vectan SP 13 | <<locked>> | 90% | 41,814 psi | 66% | 2644 fps | 96% |
| Vihtavuori 20N29 | <<locked>> | 96% | 45,078 psi | 71% | 2730 fps | 95.3% |
| Vihtavuori N165 | <<locked>> | 80% | 50,111 psi | 79% | 2730 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 43,250 psi | 68% | 2641 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 80% | 47,500 psi | 74% | 2762 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 80% | 42,627 psi | 67% | 2707 fps | 98.4% |
| Vihtavuori N570 | 80 gr | 80% | 40,683 psi | 64% | 2700 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 53,040 psi | 83% | 2848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 52,939 psi | 83% | 2789 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 Target. ADI AR 2218 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,054 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 Target 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.