Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 150gr | RWS Speed Tip Professional bullet and 51 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 Hodgdon Retumbo.
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% | 57,609 psi | 90% | 3054 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 49,298 psi | 77% | 3012 fps | 96.6% |
| Accurate MAGPRO | <<locked>> | 84% | 56,971 psi | 89% | 3173 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 82% | 54,752 psi | 86% | 3087 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 57,508 psi | 90% | 3166 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 56,652 psi | 89% | 3143 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 57,638 psi | 90% | 3278 fps | 99.1% |
| ADI AR 2225 | <<locked>> | 96% | 56,246 psi | 88% | 3166 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,926 psi | 86% | 3084 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 54,375 psi | 85% | 3074 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 54,186 psi | 85% | 3097 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 56,072 psi | 88% | 3058 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 56,942 psi | 89% | 3140 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 56,884 psi | 89% | 3150 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 55,361 psi | 87% | 3179 fps | 98.4% |
| Alliant Reloder-50 | <<locked>> | 98% | 55,463 psi | 87% | 3169 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 57,566 psi | 90% | 3120 fps | 98.8% |
| Bofors RP15 | <<locked>> | 88% | 57,392 psi | 90% | 3150 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 56,753 psi | 89% | 3159 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 54,186 psi | 85% | 3097 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 54,186 psi | 85% | 3104 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 56,043 psi | 88% | 3091 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 55,085 psi | 86% | 3077 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 90% | 56,333 psi | 88% | 3232 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2021 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 56,318 psi | 88% | 3071 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 55,927 psi | 88% | 3150 fps | 99.9% |
| IMR 8133 Enduron | <<locked>> | 98% | 55,317 psi | 87% | 3150 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 56,043 psi | 88% | 3031 fps | 100% |
| Norma 217 | <<locked>> | 98% | 56,724 psi | 89% | 3173 fps | 100% |
| Norma MRP | <<locked>> | 82% | 54,186 psi | 85% | 3110 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 57,522 psi | 90% | 3173 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 55,840 psi | 88% | 3094 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,841 psi | 61% | 2067 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 57,377 psi | 90% | 3219 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 56,637 psi | 89% | 3186 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 82% | 55,114 psi | 86% | 3058 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 54,201 psi | 85% | 3068 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 3025 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 57,696 psi | 90% | 3127 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 56,623 psi | 89% | 3048 fps | 99.7% |
| Somchem S385 | <<locked>> | 82% | 54,578 psi | 86% | 3035 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 54,621 psi | 86% | 3022 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 54,027 psi | 85% | 3045 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 54,244 psi | 85% | 3038 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 57,551 psi | 90% | 3182 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 88% | 54,955 psi | 86% | 3114 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 92% | 56,985 psi | 89% | 3189 fps | 99.5% |
| Vihtavuori N570 | <<locked>> | 92% | 54,375 psi | 85% | 3186 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 57,159 psi | 90% | 3153 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 54,433 psi | 85% | 3031 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% | 47,152 psi | 74% | 2887 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 45,788 psi | 72% | 2943 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 80% | 49,298 psi | 77% | 3035 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 80% | 51,227 psi | 80% | 3025 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 46,427 psi | 73% | 2969 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 34,751 psi | 54% | 2697 fps | 95.9% |
| ADI AR 2218 | 95.4 gr | 92% | 45,890 psi | 72% | 3041 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 80% | 32,024 psi | 50% | 2664 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,488 psi | 81% | 3022 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,995 psi | 80% | 3015 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 47,181 psi | 74% | 2972 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,992 psi | 72% | 2897 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 40,205 psi | 63% | 2844 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 52,765 psi | 83% | 3084 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 44,208 psi | 69% | 2963 fps | 95.6% |
| Alliant Reloder-50 | <<locked>> | 92% | 44,295 psi | 69% | 2949 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 44,266 psi | 69% | 2871 fps | 96% |
| Bofors RP15 | <<locked>> | 80% | 44,063 psi | 69% | 2907 fps | 99.1% |
| Bofors RP30 | <<locked>> | 80% | 37,536 psi | 59% | 2779 fps | 97% |
| Bofors RP5 | <<locked>> | 80% | 47,181 psi | 74% | 2972 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 37,826 psi | 59% | 2779 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 48,994 psi | 77% | 2969 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,993 psi | 75% | 2949 fps | 98.7% |
| Hodgdon Retumbo | 78.3 gr | 80% | 39,233 psi | 61% | 2897 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,398 psi | 45% | 1811 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 49,530 psi | 78% | 2953 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 45,237 psi | 71% | 2953 fps | 98.7% |
| IMR 8133 Enduron | <<locked>> | 84% | 34,084 psi | 53% | 2703 fps | 95.5% |
| Lovex S071 | <<locked>> | 80% | 40,683 psi | 64% | 2759 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 29,878 psi | 47% | 2602 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 50,546 psi | 79% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 45,876 psi | 72% | 2969 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 80% | 41,365 psi | 65% | 2835 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,312 psi | 46% | 1857 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 38,798 psi | 61% | 2871 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 38,609 psi | 61% | 2825 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 51,677 psi | 81% | 2995 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 50,749 psi | 80% | 3009 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 47,848 psi | 75% | 2959 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 50,401 psi | 79% | 3005 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 52,895 psi | 83% | 2982 fps | 99.4% |
| Somchem S385 | <<locked>> | 80% | 51,039 psi | 80% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 44,846 psi | 70% | 2851 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 50,517 psi | 79% | 2979 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 50,836 psi | 80% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,995 psi | 78% | 3048 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 80% | 41,771 psi | 65% | 2854 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 39,726 psi | 62% | 2844 fps | 95.6% |
| Vihtavuori N570 | 89.4 gr | 88% | 46,992 psi | 74% | 3041 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 80% | 45,353 psi | 71% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 47,340 psi | 74% | 2910 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 51 powders for 7 mm KM Katzmaier loaded with the .284 | 150gr | RWS Speed Tip Professional. ADI AR 2218 delivers the highest muzzle velocity at 3,278 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,278 fps. Accurate 8700 gives the best case fill at 100 %, and 51 of the 51 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 150.0 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, Hodgdon Retumbo rank at the top here: for 7 mm KM Katzmaier with the .284 | 150gr | RWS Speed Tip Professional 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.