Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 152gr | CutEdge Maximus 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>> | 86% | 56,608 psi | 89% | 3028 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 48,356 psi | 76% | 2982 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 84% | 55,985 psi | 88% | 3143 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 82% | 54,186 psi | 85% | 3064 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,739 psi | 89% | 3143 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 56,057 psi | 88% | 3123 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 56,797 psi | 89% | 3251 fps | 99% |
| ADI AR 2225 | <<locked>> | 96% | 55,390 psi | 87% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,334 psi | 90% | 3110 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 57,116 psi | 90% | 3133 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,332 psi | 87% | 3035 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 56,043 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,999 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 54,389 psi | 85% | 3150 fps | 98.3% |
| Alliant Reloder-50 | <<locked>> | 98% | 54,186 psi | 85% | 3136 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,174 psi | 90% | 3100 fps | 98.9% |
| Bofors RP15 | <<locked>> | 88% | 56,492 psi | 89% | 3123 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 55,753 psi | 87% | 3133 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 57,116 psi | 90% | 3133 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 57,522 psi | 90% | 3143 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 55,477 psi | 87% | 3071 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,317 psi | 85% | 3051 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 90% | 55,448 psi | 87% | 3205 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 2008 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,637 psi | 87% | 3048 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 55,100 psi | 86% | 3120 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 54,273 psi | 85% | 3120 fps | 99.9% |
| Lovex S071 | <<locked>> | 90% | 54,853 psi | 86% | 3002 fps | 100% |
| Norma 217 | <<locked>> | 98% | 55,593 psi | 87% | 3143 fps | 100% |
| Norma MRP | <<locked>> | 84% | 57,319 psi | 90% | 3146 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,608 psi | 89% | 3150 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 55,071 psi | 86% | 3071 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,798 psi | 61% | 2057 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 56,420 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 55,535 psi | 87% | 3156 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 54,549 psi | 85% | 3035 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 84% | 57,203 psi | 90% | 3104 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 50,299 psi | 79% | 2995 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,826 psi | 89% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,825 psi | 87% | 3022 fps | 99.7% |
| Somchem S385 | <<locked>> | 84% | 57,363 psi | 90% | 3068 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,580 psi | 90% | 3054 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,985 psi | 89% | 3084 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 84% | 56,739 psi | 89% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,681 psi | 89% | 3153 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 53,896 psi | 84% | 3081 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 92% | 55,970 psi | 88% | 3159 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 94% | 57,435 psi | 90% | 3228 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,999 psi | 88% | 3127 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,464 psi | 90% | 3068 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% | 45,934 psi | 72% | 2854 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 44,846 psi | 70% | 2913 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 80% | 48,312 psi | 76% | 3005 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 50,473 psi | 79% | 3002 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 45,759 psi | 72% | 2946 fps | 98.8% |
| ADI AR 2217 | <<locked>> | 80% | 33,881 psi | 53% | 2664 fps | 95.7% |
| ADI AR 2218 | 95.2 gr | 92% | 44,991 psi | 71% | 3012 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 31,183 psi | 49% | 2628 fps | 97.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,198 psi | 79% | 2992 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,441 psi | 73% | 2946 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,179 psi | 71% | 2874 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,276 psi | 62% | 2815 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,880 psi | 81% | 3058 fps | 100% |
| Alliant Reloder-33 | 92.8 gr | 88% | 43,149 psi | 68% | 2927 fps | 95.4% |
| Alliant Reloder-50 | <<locked>> | 94% | 46,441 psi | 73% | 2986 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,787 psi | 69% | 2851 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 43,134 psi | 68% | 2877 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 36,477 psi | 57% | 2740 fps | 96.8% |
| Bofors RP5 | <<locked>> | 80% | 46,441 psi | 73% | 2946 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 36,956 psi | 58% | 2746 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 80% | 48,182 psi | 76% | 2940 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,355 psi | 74% | 2927 fps | 98.7% |
| Hodgdon Retumbo | <<locked>> | 80% | 38,435 psi | 60% | 2867 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,355 psi | 44% | 1801 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,791 psi | 76% | 2927 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 44,527 psi | 70% | 2927 fps | 98.6% |
| IMR 8133 Enduron | <<locked>> | 84% | 33,112 psi | 52% | 2667 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 39,465 psi | 62% | 2723 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 28,863 psi | 45% | 2559 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 49,559 psi | 78% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,078 psi | 71% | 2943 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 40,480 psi | 63% | 2805 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,095 psi | 46% | 1844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,927 psi | 59% | 2838 fps | 99.5% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 37,478 psi | 59% | 2785 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 50,908 psi | 80% | 2972 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 50,038 psi | 78% | 2982 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,847 psi | 73% | 2930 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,690 psi | 78% | 2979 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 52,112 psi | 82% | 2959 fps | 99.3% |
| Somchem S385 | <<locked>> | 80% | 50,212 psi | 79% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 43,918 psi | 69% | 2822 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 49,559 psi | 78% | 2949 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 49,676 psi | 78% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,095 psi | 77% | 3018 fps | 99% |
| Vihtavuori N565 | <<locked>> | 80% | 40,785 psi | 64% | 2822 fps | 97.4% |
| Vihtavuori N568 | <<locked>> | 82% | 38,696 psi | 61% | 2812 fps | 95.4% |
| Vihtavuori N570 | 89.2 gr | 88% | 45,977 psi | 72% | 3009 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,440 psi | 70% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,470 psi | 73% | 2881 fps | 99.6% |
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 57 powders for 7 mm KM Katzmaier loaded with the .284 | 152gr | CutEdge Maximus. ADI AR 2218 delivers the highest muzzle velocity at 3,251 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,251 fps. Accurate 8700 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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 | 152gr | CutEdge Maximus they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Hodgdon US 869, Lovex D100, Ramshot LRT 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.