Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 140gr | Berger VLD Hunting bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ADI AR 2218.
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% | 55,767 psi | 87% | 3114 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 57,653 psi | 90% | 3281 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 84% | 54,694 psi | 86% | 3219 fps | 99% |
| ADI AR 2209 | <<locked>> | 84% | 56,739 psi | 89% | 3209 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 55,347 psi | 87% | 3222 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 94% | 54,534 psi | 85% | 3199 fps | 99.8% |
| ADI AR 2218 | <<locked>> | 98% | 55,158 psi | 86% | 3310 fps | 98.1% |
| ADI AR 2225 | <<locked>> | 98% | 57,667 psi | 90% | 3281 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 56,275 psi | 88% | 3196 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 55,869 psi | 88% | 3215 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 54,027 psi | 85% | 3120 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 54,563 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 54,679 psi | 86% | 3205 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 57,217 psi | 90% | 3291 fps | 98.2% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3278 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 55,956 psi | 88% | 3176 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 55,274 psi | 87% | 3205 fps | 99.9% |
| Bofors RP30 | <<locked>> | 92% | 54,549 psi | 85% | 3209 fps | 99.8% |
| Bofors RP5 | <<locked>> | 86% | 55,869 psi | 88% | 3215 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 55,941 psi | 88% | 3219 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 54,157 psi | 85% | 3146 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 57,014 psi | 89% | 3196 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 56,884 psi | 89% | 3110 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 53,824 psi | 84% | 3284 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,739 psi | 59% | 2090 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 54,650 psi | 86% | 3127 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 88% | 57,682 psi | 90% | 3268 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3258 fps | 99.9% |
| Lovex S071 | <<locked>> | 92% | 57,667 psi | 90% | 3143 fps | 100% |
| Norma 217 | <<locked>> | 98% | 54,056 psi | 85% | 3219 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,014 psi | 88% | 3228 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 55,013 psi | 86% | 3222 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 88% | 53,766 psi | 84% | 3146 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,812 psi | 61% | 2139 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 54,810 psi | 86% | 3268 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,201 psi | 85% | 3228 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 84% | 56,971 psi | 89% | 3173 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 84% | 56,130 psi | 88% | 3189 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 55,753 psi | 87% | 3182 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 54,824 psi | 86% | 3097 fps | 99.3% |
| Somchem S385 | <<locked>> | 84% | 56,405 psi | 88% | 3150 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 56,623 psi | 89% | 3140 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 55,883 psi | 88% | 3156 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 55,869 psi | 88% | 3153 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 55,361 psi | 87% | 3232 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 90% | 56,608 psi | 89% | 3225 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 92% | 54,520 psi | 85% | 3232 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 94% | 55,970 psi | 88% | 3297 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 54,389 psi | 85% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 56,304 psi | 88% | 3150 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% | 45,498 psi | 71% | 2940 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 50,082 psi | 78% | 3146 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 47,384 psi | 74% | 3077 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 80% | 49,429 psi | 77% | 3081 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 44,715 psi | 70% | 3015 fps | 98% |
| ADI AR 2217 | <<locked>> | 82% | 35,795 psi | 56% | 2799 fps | 95.6% |
| ADI AR 2218 | 98.7 gr | 94% | 47,456 psi | 74% | 3150 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 30,719 psi | 48% | 2694 fps | 96.5% |
| Alliant Reloder-19 | <<locked>> | 80% | 49,400 psi | 77% | 3074 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 45,513 psi | 71% | 3022 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 44,324 psi | 69% | 2956 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 38,406 psi | 60% | 2887 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 50,705 psi | 79% | 3140 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 45,397 psi | 71% | 3064 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 96% | 49,182 psi | 77% | 3130 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 45,803 psi | 72% | 2979 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 42,351 psi | 66% | 2949 fps | 98.3% |
| Bofors RP30 | <<locked>> | 80% | 35,984 psi | 56% | 2812 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 45,513 psi | 71% | 3022 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 80% | 36,230 psi | 57% | 2812 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 80% | 47,210 psi | 74% | 3015 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 80% | 46,398 psi | 73% | 2999 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 53,272 psi | 83% | 3054 fps | 100% |
| Hodgdon Retumbo | 79.3 gr | 80% | 37,579 psi | 59% | 2933 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,384 psi | 44% | 1877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,950 psi | 75% | 3002 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 80% | 43,511 psi | 68% | 2999 fps | 97.8% |
| IMR 8133 Enduron | <<locked>> | 86% | 34,838 psi | 55% | 2799 fps | 95% |
| Lovex S071 | <<locked>> | 80% | 39,146 psi | 61% | 2805 fps | 99.4% |
| Norma 217 | <<locked>> | 82% | 30,545 psi | 48% | 2694 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 48,588 psi | 76% | 3100 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 43,888 psi | 69% | 3012 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 80% | 39,552 psi | 62% | 2874 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,124 psi | 46% | 1919 fps | 100% |
| ReloadSwiss RS 76 | 84.9 gr | 80% | 37,115 psi | 58% | 2907 fps | 98.9% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 39,755 psi | 62% | 2930 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 50,154 psi | 79% | 3051 fps | 99% |
| Rottweil R 905 | <<locked>> | 80% | 49,081 psi | 77% | 3061 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 48,733 psi | 76% | 3058 fps | 99.5% |
| Somchem S361 | <<locked>> | 80% | 51,227 psi | 80% | 3035 fps | 98.8% |
| Somchem S385 | <<locked>> | 80% | 49,414 psi | 77% | 3031 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 43,323 psi | 68% | 2900 fps | 99.1% |
| Vihtavuori N170 | <<locked>> | 90% | 52,272 psi | 82% | 3091 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 48,907 psi | 77% | 3038 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 48,124 psi | 75% | 3094 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 80% | 40,132 psi | 63% | 2894 fps | 96.5% |
| Vihtavuori N568 | <<locked>> | 84% | 40,886 psi | 64% | 2949 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 90% | 48,385 psi | 76% | 3150 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 43,134 psi | 68% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 45,730 psi | 72% | 2959 fps | 99.1% |
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 | 140gr | Berger VLD Hunting. ADI AR 2218 delivers the highest muzzle velocity at 3,310 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,310 fps. Alliant Reloder-50 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 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-50, Hodgdon TrailBoss, IMR 8133 Enduron 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. Hodgdon Retumbo, ReloadSwiss RS 76, ADI AR 2218 rank at the top here: for 7 mm KM Katzmaier with the .284 | 140gr | Berger VLD Hunting 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.