Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 162gr | Hornady A-MAX bullet and 50 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>> | 84% | 56,521 psi | 89% | 2940 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2986 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 82% | 55,753 psi | 87% | 3058 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 82% | 57,203 psi | 90% | 3028 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,231 psi | 88% | 3051 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 55,898 psi | 88% | 3038 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,637 psi | 89% | 3173 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 94% | 55,738 psi | 87% | 3061 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,493 psi | 90% | 3025 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,913 psi | 89% | 3018 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,826 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,129 psi | 86% | 2946 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,043 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,592 psi | 86% | 3074 fps | 98.8% |
| Alliant Reloder-50 | <<locked>> | 96% | 54,853 psi | 86% | 3071 fps | 98.5% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,405 psi | 88% | 3012 fps | 99.1% |
| Bofors RP15 | <<locked>> | 86% | 56,246 psi | 88% | 3035 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 55,927 psi | 88% | 3051 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,826 psi | 89% | 3045 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,290 psi | 90% | 3054 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,694 psi | 86% | 2979 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 84% | 57,580 psi | 90% | 3022 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 55,695 psi | 87% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1955 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,824 psi | 86% | 2956 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 54,969 psi | 86% | 3038 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,290 psi | 90% | 2966 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,650 psi | 86% | 3045 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 54,998 psi | 86% | 2920 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,173 psi | 88% | 3068 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,000 psi | 89% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,304 psi | 88% | 3058 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 54,723 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,088 psi | 61% | 1998 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 56,478 psi | 89% | 3104 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 55,695 psi | 87% | 3077 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 82% | 57,319 psi | 90% | 2995 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,855 psi | 89% | 3012 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2995 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,478 psi | 89% | 3009 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,956 psi | 89% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,130 psi | 90% | 2966 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,710 psi | 89% | 3002 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 82% | 56,811 psi | 89% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,246 psi | 88% | 3064 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 86% | 54,056 psi | 85% | 3005 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 56,101 psi | 88% | 3081 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 92% | 57,624 psi | 90% | 3150 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,463 psi | 88% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,956 psi | 89% | 2976 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% | 49,385 psi | 77% | 2831 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 41,974 psi | 66% | 2785 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 80% | 51,895 psi | 81% | 2989 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 80% | 53,534 psi | 84% | 2972 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,936 psi | 77% | 2927 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 80% | 36,622 psi | 57% | 2667 fps | 97.6% |
| ADI AR 2218 | 90.6 gr | 88% | 41,930 psi | 66% | 2871 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 34,011 psi | 53% | 2641 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 53,737 psi | 84% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,229 psi | 83% | 2959 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,676 psi | 78% | 2927 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,457 psi | 76% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,540 psi | 67% | 2799 fps | 100% |
| Alliant Reloder-33 | 88.1 gr | 84% | 40,422 psi | 63% | 2795 fps | 95.1% |
| Alliant Reloder-50 | <<locked>> | 90% | 43,859 psi | 69% | 2858 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,224 psi | 72% | 2828 fps | 97.3% |
| Bofors RP15 | <<locked>> | 80% | 46,238 psi | 72% | 2861 fps | 99.8% |
| Bofors RP30 | <<locked>> | 80% | 39,711 psi | 62% | 2743 fps | 98.4% |
| Bofors RP5 | <<locked>> | 80% | 49,676 psi | 78% | 2927 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 39,929 psi | 63% | 2746 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 80% | 51,213 psi | 80% | 2920 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,328 psi | 79% | 2904 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,785 psi | 65% | 2867 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,660 psi | 45% | 1752 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,503 psi | 81% | 2897 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 47,790 psi | 75% | 2910 fps | 99.5% |
| IMR 7977 Enduron | <<locked>> | 86% | 50,212 psi | 79% | 2848 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 80% | 31,618 psi | 50% | 2556 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 42,627 psi | 67% | 2710 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,082 psi | 50% | 2582 fps | 97.8% |
| Norma MRP | <<locked>> | 80% | 53,171 psi | 83% | 2995 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,544 psi | 76% | 2930 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 43,816 psi | 69% | 2795 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,472 psi | 46% | 1791 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,394 psi | 65% | 2841 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,159 psi | 60% | 2730 fps | 96.6% |
| Rottweil R 904 | <<locked>> | 80% | 53,766 psi | 84% | 2940 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 53,069 psi | 83% | 2953 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,077 psi | 69% | 2805 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,721 psi | 83% | 2949 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,447 psi | 84% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,905 psi | 74% | 2802 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 46,253 psi | 72% | 2815 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 53,214 psi | 83% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,518 psi | 82% | 3002 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 80% | 44,005 psi | 69% | 2818 fps | 98.8% |
| Vihtavuori N568 | <<locked>> | 80% | 39,102 psi | 61% | 2749 fps | 96.3% |
| Vihtavuori N570 | 84.7 gr | 84% | 43,105 psi | 68% | 2871 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,602 psi | 76% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,559 psi | 78% | 2858 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 50 powders for 7 mm KM Katzmaier loaded with the .284 | 162gr | Hornady A-MAX. ADI AR 2218 delivers the highest muzzle velocity at 3,173 fps; across all powders the maximum-charge window runs from 1,955 fps to 3,173 fps. Accurate 8700 gives the best case fill at 100 %, and 50 of the 50 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 162.0 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 | 162gr | Hornady A-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.