Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 168gr | Berger VLD Target 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 Alliant Reloder-50.
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% | 54,563 psi | 86% | 2867 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 54,679 psi | 86% | 2979 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 82% | 57,522 psi | 90% | 3041 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 82% | 54,244 psi | 85% | 2972 fps | 100% |
| ADI AR 2217 | <<locked>> | 90% | 53,940 psi | 85% | 2963 fps | 100% |
| ADI AR 2218 | <<locked>> | 94% | 54,534 psi | 85% | 3094 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 92% | 53,998 psi | 85% | 2986 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 82% | 54,911 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 57,029 psi | 89% | 2923 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 86% | 54,389 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 56,782 psi | 89% | 3068 fps | 99.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 57,145 psi | 90% | 3068 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 54,317 psi | 85% | 2933 fps | 99.1% |
| Bofors RP15 | <<locked>> | 84% | 54,520 psi | 85% | 2963 fps | 100% |
| Bofors RP30 | <<locked>> | 88% | 54,302 psi | 85% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 82% | 54,911 psi | 86% | 2966 fps | 100% |
| Hodgdon H1000 | <<locked>> | 88% | 55,332 psi | 87% | 2979 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 56,449 psi | 88% | 2963 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 82% | 55,477 psi | 87% | 2946 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 86% | 54,201 psi | 85% | 3048 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,203 psi | 60% | 1926 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 56,391 psi | 88% | 2936 fps | 100% |
| IMR 7828 SSC | <<locked>> | 84% | 56,768 psi | 89% | 3018 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 88% | 55,100 psi | 86% | 2894 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 96% | 56,840 psi | 89% | 3031 fps | 100% |
| Lovex D100 | <<locked>> | 92% | 56,449 psi | 88% | 2946 fps | 96% |
| Lovex S071 | <<locked>> | 88% | 56,797 psi | 89% | 2900 fps | 100% |
| Norma 217 | <<locked>> | 94% | 54,679 psi | 86% | 2999 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 54,360 psi | 85% | 2982 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 56,797 psi | 89% | 2966 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,218 psi | 61% | 1969 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 54,766 psi | 86% | 3028 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 53,809 psi | 84% | 3002 fps | 99.9% |
| Shooters World 50 BMG | <<locked>> | 92% | 56,449 psi | 88% | 2946 fps | 96% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 2986 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 84% | 55,303 psi | 87% | 2894 fps | 100% |
| Vihtavuori N170 | <<locked>> | 88% | 54,781 psi | 86% | 2930 fps | 98% |
| Vihtavuori N565 | <<locked>> | 86% | 55,999 psi | 88% | 2989 fps | 100% |
| Vihtavuori N568 | <<locked>> | 88% | 54,143 psi | 85% | 3002 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 90% | 55,811 psi | 87% | 3077 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 82% | 54,563 psi | 86% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 54,650 psi | 86% | 2897 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% | 51,082 psi | 80% | 2815 fps | 100% |
| Accurate 8700 | <<locked>> | 92% | 40,712 psi | 64% | 2717 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 80% | 53,751 psi | 84% | 2979 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 50,531 psi | 79% | 2910 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 80% | 37,942 psi | 59% | 2657 fps | 98.4% |
| ADI AR 2218 | 89.1 gr | 86% | 40,611 psi | 64% | 2802 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 80% | 35,346 psi | 55% | 2635 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 51,271 psi | 80% | 2910 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 50,067 psi | 78% | 2822 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 44,295 psi | 69% | 2789 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 82% | 39,146 psi | 61% | 2723 fps | 95.1% |
| Alliant Reloder-50 | 92.5 gr | 88% | 42,540 psi | 67% | 2789 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 47,659 psi | 75% | 2815 fps | 98% |
| Bofors RP15 | <<locked>> | 80% | 47,732 psi | 75% | 2844 fps | 99.9% |
| Bofors RP30 | <<locked>> | 80% | 41,336 psi | 65% | 2740 fps | 99% |
| Bofors RP5 | <<locked>> | 80% | 51,271 psi | 80% | 2910 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 41,379 psi | 65% | 2733 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 80% | 52,707 psi | 83% | 2900 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 51,808 psi | 81% | 2884 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 80% | 43,497 psi | 68% | 2861 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,674 psi | 45% | 1722 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 52,997 psi | 83% | 2881 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 80% | 49,429 psi | 77% | 2897 fps | 99.8% |
| IMR 7977 Enduron | <<locked>> | 84% | 48,530 psi | 76% | 2776 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 80% | 32,953 psi | 52% | 2552 fps | 96.4% |
| Lovex D100 | <<locked>> | 90% | 52,750 psi | 83% | 2884 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 44,034 psi | 69% | 2694 fps | 100% |
| Norma 217 | <<locked>> | 80% | 33,547 psi | 53% | 2582 fps | 98.6% |
| Ramshot Grand | <<locked>> | 80% | 50,517 psi | 79% | 2920 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 45,600 psi | 71% | 2785 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,501 psi | 46% | 1765 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 43,352 psi | 68% | 2835 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 39,871 psi | 62% | 2730 fps | 97.5% |
| Shooters World 50 BMG | <<locked>> | 90% | 52,750 psi | 83% | 2884 fps | 95.1% |
| SNPE Vectan SP 13 | <<locked>> | 92% | 42,859 psi | 67% | 2740 fps | 95.6% |
| Vihtavuori N165 | <<locked>> | 80% | 48,472 psi | 76% | 2785 fps | 100% |
| Vihtavuori N170 | <<locked>> | 82% | 44,730 psi | 70% | 2746 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 80% | 45,687 psi | 72% | 2808 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 80% | 40,770 psi | 64% | 2746 fps | 97.3% |
| Vihtavuori N570 | 83.2 gr | 82% | 41,843 psi | 66% | 2802 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 50,647 psi | 79% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 51,010 psi | 80% | 2841 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 47 powders for 7 mm KM Katzmaier loaded with the .284 | 168gr | Berger VLD Target. ADI AR 2218 delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,094 fps. Accurate 8700 gives the best case fill at 100 %, and 47 of the 47 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 1:10.0 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-50 rank at the top here: for 7 mm KM Katzmaier with the .284 | 168gr | Berger VLD Target they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon 50BMG burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.