Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 162gr | Hornady BTHP 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% | 56,855 psi | 89% | 2946 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 2989 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 82% | 56,086 psi | 88% | 3064 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 82% | 57,522 psi | 90% | 3035 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 56,579 psi | 89% | 3058 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 56,217 psi | 88% | 3041 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 56,898 psi | 89% | 3179 fps | 99.5% |
| ADI AR 2225 | <<locked>> | 94% | 56,043 psi | 88% | 3064 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 57,624 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 57,072 psi | 89% | 3022 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 57,174 psi | 90% | 3048 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 55,448 psi | 87% | 2949 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 56,333 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 54,868 psi | 86% | 3081 fps | 98.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 55,143 psi | 86% | 3077 fps | 98.6% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 56,666 psi | 89% | 3015 fps | 99.2% |
| Bofors RP15 | <<locked>> | 86% | 56,579 psi | 89% | 3041 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 56,246 psi | 88% | 3054 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 57,174 psi | 90% | 3048 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 57,624 psi | 90% | 3061 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,998 psi | 86% | 2982 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 54,041 psi | 85% | 2966 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 88% | 56,072 psi | 88% | 3127 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,014 psi | 60% | 1955 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 55,143 psi | 86% | 2959 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 55,114 psi | 86% | 3038 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 57,551 psi | 90% | 2972 fps | 96.7% |
| IMR 8133 Enduron | <<locked>> | 96% | 54,998 psi | 86% | 3051 fps | 100% |
| Lovex S071 | <<locked>> | 88% | 55,332 psi | 87% | 2923 fps | 100% |
| Norma 217 | <<locked>> | 96% | 56,521 psi | 89% | 3071 fps | 100% |
| Norma MRP | <<locked>> | 82% | 57,334 psi | 90% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 56,666 psi | 89% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 55,042 psi | 86% | 2986 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,175 psi | 61% | 2001 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 57,029 psi | 89% | 3110 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 56,014 psi | 88% | 3081 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 82% | 57,653 psi | 90% | 3002 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 57,014 psi | 89% | 3015 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2999 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 56,637 psi | 89% | 3012 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 57,261 psi | 90% | 2982 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 57,421 psi | 90% | 2972 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 56,971 psi | 89% | 3009 fps | 98% |
| Vihtavuori N555 | <<locked>> | 82% | 57,130 psi | 90% | 2979 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 56,579 psi | 89% | 3068 fps | 100% |
| Vihtavuori N565 | <<locked>> | 86% | 54,375 psi | 85% | 3009 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 90% | 56,405 psi | 88% | 3087 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 90% | 53,954 psi | 85% | 3087 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 56,652 psi | 89% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 57,014 psi | 89% | 2979 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% | 49,719 psi | 78% | 2838 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 42,351 psi | 66% | 2792 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 80% | 52,185 psi | 82% | 2995 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 80% | 53,853 psi | 84% | 2976 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 49,095 psi | 77% | 2930 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 80% | 36,767 psi | 58% | 2671 fps | 97.7% |
| ADI AR 2218 | 91 gr | 88% | 42,148 psi | 66% | 2877 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 34,156 psi | 54% | 2644 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 54,056 psi | 85% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 53,534 psi | 84% | 2966 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,835 psi | 78% | 2930 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 48,631 psi | 76% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 42,859 psi | 67% | 2805 fps | 100% |
| Alliant Reloder-33 | 88.5 gr | 84% | 40,683 psi | 64% | 2799 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 90% | 44,121 psi | 69% | 2864 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 46,470 psi | 73% | 2831 fps | 97.4% |
| Bofors RP15 | <<locked>> | 80% | 46,398 psi | 73% | 2864 fps | 99.8% |
| Bofors RP30 | <<locked>> | 80% | 40,001 psi | 63% | 2749 fps | 98.5% |
| Bofors RP5 | <<locked>> | 80% | 49,835 psi | 78% | 2930 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 40,074 psi | 63% | 2746 fps | 99% |
| Hodgdon H4831 | <<locked>> | 80% | 51,329 psi | 80% | 2920 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 50,459 psi | 79% | 2904 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,959 psi | 66% | 2871 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,645 psi | 45% | 1752 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,793 psi | 81% | 2904 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 80% | 47,950 psi | 75% | 2913 fps | 99.5% |
| IMR 7977 Enduron | <<locked>> | 86% | 50,488 psi | 79% | 2851 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 80% | 31,749 psi | 50% | 2559 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 42,946 psi | 67% | 2717 fps | 100% |
| Norma 217 | <<locked>> | 80% | 32,242 psi | 51% | 2585 fps | 97.8% |
| Norma MRP | <<locked>> | 80% | 53,505 psi | 84% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 48,863 psi | 77% | 2936 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 44,106 psi | 69% | 2802 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,443 psi | 46% | 1795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 41,698 psi | 65% | 2848 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 38,421 psi | 60% | 2740 fps | 96.7% |
| Rottweil R 904 | <<locked>> | 80% | 54,085 psi | 85% | 2943 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 53,388 psi | 84% | 2959 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 44,469 psi | 70% | 2812 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 53,040 psi | 83% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 53,592 psi | 84% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 47,181 psi | 74% | 2805 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 46,485 psi | 73% | 2822 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 53,592 psi | 84% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 52,837 psi | 83% | 3005 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 80% | 44,309 psi | 69% | 2822 fps | 98.8% |
| Vihtavuori N568 | <<locked>> | 80% | 39,378 psi | 62% | 2753 fps | 96.4% |
| Vihtavuori N570 | 85.1 gr | 84% | 43,410 psi | 68% | 2877 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 48,820 psi | 77% | 2927 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 49,835 psi | 78% | 2864 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 BTHP. ADI AR 2218 delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,955 fps to 3,179 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 BTHP 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.