Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 165gr | Norma Bondstrike bullet and 46 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% | 57,305 psi | 90% | 2930 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 53,316 psi | 84% | 2979 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 82% | 56,405 psi | 88% | 3045 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 84% | 56,855 psi | 89% | 3038 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 56,623 psi | 89% | 3025 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 57,435 psi | 90% | 3163 fps | 99.6% |
| ADI AR 2225 | <<locked>> | 94% | 56,478 psi | 89% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,464 psi | 90% | 3005 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,435 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,898 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,898 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 55,361 psi | 87% | 3068 fps | 99.1% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,695 psi | 87% | 3064 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,942 psi | 89% | 2999 fps | 99.3% |
| Bofors RP15 | <<locked>> | 86% | 57,014 psi | 89% | 3022 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,811 psi | 89% | 3041 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,435 psi | 90% | 3028 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 54,114 psi | 85% | 2982 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 55,419 psi | 87% | 2966 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,447 psi | 85% | 2949 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,666 psi | 89% | 3110 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1939 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,492 psi | 87% | 2943 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 55,608 psi | 87% | 3025 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 54,215 psi | 85% | 2897 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 55,405 psi | 87% | 3031 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,767 psi | 87% | 2907 fps | 100% |
| Norma 217 | <<locked>> | 96% | 57,174 psi | 90% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 57,203 psi | 90% | 3048 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,593 psi | 87% | 2972 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,160 psi | 61% | 1982 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 57,508 psi | 90% | 3094 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,492 psi | 89% | 3068 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 82% | 57,421 psi | 90% | 2999 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2986 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 57,058 psi | 89% | 2992 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,667 psi | 90% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 54,288 psi | 85% | 2900 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 57,334 psi | 90% | 2992 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 82% | 57,566 psi | 90% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 57,058 psi | 89% | 3054 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 54,882 psi | 86% | 2995 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 56,840 psi | 89% | 3068 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 90% | 54,389 psi | 85% | 3074 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 57,261 psi | 90% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,479 psi | 90% | 2963 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% | 50,082 psi | 78% | 2822 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 42,743 psi | 67% | 2779 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 80% | 52,663 psi | 83% | 2982 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 49,487 psi | 78% | 2913 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 80% | 37,202 psi | 58% | 2661 fps | 98% |
| ADI AR 2218 | 88.5 gr | 86% | 39,581 psi | 62% | 2792 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 34,476 psi | 54% | 2635 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,896 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 50,227 psi | 79% | 2910 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,994 psi | 77% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 43,265 psi | 68% | 2792 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 41,031 psi | 64% | 2785 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 88% | 41,481 psi | 65% | 2785 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,833 psi | 73% | 2818 fps | 97.6% |
| Bofors RP15 | <<locked>> | 80% | 46,920 psi | 74% | 2851 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 40,364 psi | 63% | 2736 fps | 98.7% |
| Bofors RP5 | <<locked>> | 80% | 50,227 psi | 79% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,567 psi | 64% | 2736 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 80% | 51,706 psi | 81% | 2904 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,821 psi | 80% | 2890 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 80% | 42,380 psi | 66% | 2858 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,558 psi | 45% | 1732 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,098 psi | 82% | 2887 fps | 99.8% |
| IMR 7828 SSC | <<locked>> | 80% | 48,356 psi | 76% | 2900 fps | 99.7% |
| IMR 7977 Enduron | <<locked>> | 86% | 50,865 psi | 80% | 2838 fps | 95.4% |
| IMR 8133 Enduron | 75.6 gr | 80% | 32,068 psi | 50% | 2549 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 43,250 psi | 68% | 2700 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,605 psi | 51% | 2579 fps | 98.1% |
| Ramshot Grand | <<locked>> | 80% | 49,327 psi | 77% | 2920 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 44,556 psi | 70% | 2789 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,530 psi | 46% | 1778 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 42,206 psi | 66% | 2835 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,856 psi | 61% | 2726 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 53,751 psi | 84% | 2940 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,817 psi | 70% | 2799 fps | 95.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,447 psi | 84% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,969 psi | 85% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,558 psi | 75% | 2789 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 43,859 psi | 69% | 2746 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 53,954 psi | 85% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 53,287 psi | 84% | 2992 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 80% | 44,686 psi | 70% | 2812 fps | 99% |
| Vihtavuori N568 | <<locked>> | 80% | 39,784 psi | 62% | 2743 fps | 96.7% |
| Vihtavuori N570 | 82.7 gr | 82% | 40,814 psi | 64% | 2799 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 49,342 psi | 77% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 50,212 psi | 79% | 2848 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 46 powders for 7 mm KM Katzmaier loaded with the .284 | 165gr | Norma Bondstrike. ADI AR 2218 delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,163 fps. Accurate 8700 gives the best case fill at 100 %, and 46 of the 46 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 165.0 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 | 165gr | Norma Bondstrike 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.