Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 168gr | 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 IMR 8133 Enduron.
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>> | 84% | 57,696 psi | 90% | 2910 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 2969 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 82% | 56,840 psi | 89% | 3031 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 84% | 57,479 psi | 90% | 3025 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 57,145 psi | 90% | 3012 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 53,795 psi | 84% | 3081 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 94% | 57,101 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,201 psi | 85% | 2956 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 56,289 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 57,377 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,985 psi | 88% | 3054 fps | 99.2% |
| Alliant Reloder-50 | <<locked>> | 96% | 56,391 psi | 88% | 3054 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 57,348 psi | 90% | 2986 fps | 99.4% |
| Bofors RP15 | <<locked>> | 86% | 57,450 psi | 90% | 3009 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 57,319 psi | 90% | 3025 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,201 psi | 85% | 2956 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,607 psi | 86% | 2969 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,782 psi | 87% | 2949 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,824 psi | 86% | 2933 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 57,290 psi | 90% | 3094 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1919 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,796 psi | 87% | 2923 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 56,057 psi | 88% | 3009 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,549 psi | 85% | 2884 fps | 96.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,985 psi | 88% | 3022 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 56,130 psi | 88% | 2890 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,609 psi | 90% | 3041 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,740 psi | 90% | 3031 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,115 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 1965 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 53,838 psi | 84% | 3015 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 57,116 psi | 90% | 3058 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 2976 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,595 psi | 90% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,679 psi | 86% | 2884 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,041 psi | 85% | 2917 fps | 97.8% |
| Vihtavuori N560 | <<locked>> | 82% | 57,493 psi | 90% | 3038 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 55,347 psi | 87% | 2979 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 57,377 psi | 90% | 3058 fps | 99.9% |
| Vihtavuori N570 | <<locked>> | 90% | 54,969 psi | 86% | 3061 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 82% | 53,737 psi | 84% | 2953 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,186 psi | 85% | 2890 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% | 50,430 psi | 79% | 2802 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 43,105 psi | 68% | 2769 fps | 96% |
| Accurate MAGPRO | <<locked>> | 80% | 53,098 psi | 83% | 2969 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 80% | 49,995 psi | 78% | 2900 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 80% | 37,492 psi | 59% | 2648 fps | 98.2% |
| ADI AR 2218 | 88.1 gr | 86% | 39,972 psi | 63% | 2785 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 34,896 psi | 55% | 2625 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,778 psi | 80% | 2900 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 49,516 psi | 78% | 2812 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,598 psi | 68% | 2776 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 41,481 psi | 65% | 2779 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 88% | 41,843 psi | 66% | 2776 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,123 psi | 74% | 2805 fps | 97.8% |
| Bofors RP15 | <<locked>> | 80% | 47,239 psi | 74% | 2835 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 40,698 psi | 64% | 2726 fps | 98.9% |
| Bofors RP5 | <<locked>> | 80% | 50,778 psi | 80% | 2900 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,901 psi | 64% | 2723 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 80% | 52,214 psi | 82% | 2890 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,314 psi | 80% | 2877 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,917 psi | 67% | 2848 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,616 psi | 45% | 1719 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,388 psi | 82% | 2867 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 80% | 48,878 psi | 77% | 2887 fps | 99.8% |
| IMR 7977 Enduron | <<locked>> | 86% | 51,169 psi | 80% | 2825 fps | 95.7% |
| IMR 8133 Enduron | 75.3 gr | 80% | 32,474 psi | 51% | 2543 fps | 96.1% |
| Lovex S071 | <<locked>> | 80% | 43,671 psi | 68% | 2687 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,054 psi | 52% | 2572 fps | 98.4% |
| Ramshot Grand | <<locked>> | 80% | 49,763 psi | 78% | 2907 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 44,947 psi | 70% | 2776 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 46% | 1759 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,641 psi | 67% | 2822 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,262 psi | 62% | 2720 fps | 97.3% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 42,221 psi | 66% | 2726 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,954 psi | 85% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,834 psi | 75% | 2772 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 44,179 psi | 69% | 2733 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 80% | 53,679 psi | 84% | 2976 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 80% | 45,063 psi | 71% | 2799 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 80% | 40,161 psi | 63% | 2733 fps | 97.1% |
| Vihtavuori N570 | 82.3 gr | 82% | 41,234 psi | 65% | 2789 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,009 psi | 78% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,560 psi | 79% | 2831 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 | 168gr | Nosler AccuBond Long Range. Hodgdon Retumbo delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,094 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 168.0 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, IMR 8133 Enduron rank at the top here: for 7 mm KM Katzmaier with the .284 | 168gr | 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.