Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 120gr | AERO SUB,- smax:16.90 bullet and 64 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 Vihtavuori N568.
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>> | 90% | 56,086 psi | 88% | 3314 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,362 psi | 88% | 3350 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,274 psi | 87% | 3415 fps | 98% |
| ADI AR 2209 | <<locked>> | 88% | 57,740 psi | 90% | 3419 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 90% | 56,246 psi | 88% | 3425 fps | 99% |
| ADI AR 2217 | <<locked>> | 98% | 54,810 psi | 86% | 3386 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 3402 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 54,143 psi | 85% | 3346 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,725 psi | 90% | 3419 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,290 psi | 90% | 3406 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,492 psi | 89% | 3419 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 54,317 psi | 85% | 3330 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 54,563 psi | 86% | 3396 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,795 psi | 86% | 3409 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3468 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,246 psi | 90% | 3373 fps | 97.1% |
| Bofors RP15 | <<locked>> | 92% | 55,680 psi | 87% | 3402 fps | 99.5% |
| Bofors RP30 | <<locked>> | 96% | 54,389 psi | 85% | 3392 fps | 99.1% |
| Bofors RP5 | <<locked>> | 90% | 56,492 psi | 89% | 3419 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 96% | 56,449 psi | 88% | 3415 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 88% | 55,390 psi | 87% | 3350 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,404 psi | 85% | 3333 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 53,998 psi | 85% | 3271 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,508 psi | 90% | 3547 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 2231 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,405 psi | 88% | 3337 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 56,768 psi | 89% | 3340 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,912 psi | 88% | 3333 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 90% | 54,346 psi | 85% | 3399 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,530 psi | 76% | 3291 fps | 98% |
| Lovex S065 | <<locked>> | 82% | 56,405 psi | 88% | 3314 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,839 psi | 86% | 3310 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,711 psi | 90% | 3340 fps | 100% |
| Norma 204 | <<locked>> | 82% | 53,882 psi | 84% | 3330 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 49,240 psi | 77% | 3320 fps | 99.6% |
| Norma MRP | <<locked>> | 88% | 56,536 psi | 89% | 3435 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,708 psi | 86% | 3330 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,448 psi | 87% | 3422 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 82% | 53,780 psi | 84% | 3330 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 54,027 psi | 85% | 3340 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 2280 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,898 psi | 89% | 3373 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,637 psi | 87% | 3402 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 54,607 psi | 86% | 3461 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 53,925 psi | 85% | 3402 fps | 98.1% |
| Rottweil R 904 | <<locked>> | 86% | 54,636 psi | 86% | 3320 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,000 psi | 89% | 3396 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,405 psi | 88% | 3314 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,839 psi | 86% | 3310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,550 psi | 87% | 3261 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,594 psi | 89% | 3392 fps | 99.6% |
| Somchem S361 | <<locked>> | 86% | 56,405 psi | 88% | 3304 fps | 98.5% |
| Somchem S365 | <<locked>> | 84% | 55,941 psi | 88% | 3333 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,363 psi | 90% | 3360 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 56,333 psi | 88% | 3323 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,421 psi | 90% | 3340 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 55,521 psi | 87% | 3320 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,927 psi | 88% | 3356 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,057 psi | 88% | 3432 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 94% | 56,826 psi | 89% | 3415 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 96% | 54,476 psi | 85% | 3409 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,246 psi | 88% | 3264 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 53,650 psi | 84% | 3409 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,450 psi | 90% | 3353 fps | 99.7% |
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% | 39,363 psi | 62% | 2986 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 52,460 psi | 82% | 3284 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 44,266 psi | 69% | 3186 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 43,772 psi | 69% | 3143 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 42,076 psi | 66% | 3133 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 90% | 41,031 psi | 64% | 3094 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 32,372 psi | 51% | 2894 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,121 psi | 69% | 3143 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,270 psi | 79% | 3294 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,714 psi | 69% | 3133 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,668 psi | 62% | 3064 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,261 psi | 60% | 3018 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,982 psi | 52% | 2913 fps | 97.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,207 psi | 68% | 3189 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 52,808 psi | 83% | 3389 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 50,285 psi | 79% | 3241 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 39,436 psi | 62% | 3058 fps | 96% |
| Bofors RP30 | <<locked>> | 88% | 40,712 psi | 64% | 3104 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 39,668 psi | 62% | 3064 fps | 96.2% |
| Hodgdon H1000 | <<locked>> | 86% | 39,088 psi | 61% | 3048 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 82% | 44,831 psi | 70% | 3140 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 82% | 44,034 psi | 69% | 3123 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,181 psi | 74% | 3150 fps | 100% |
| Hodgdon Retumbo | 83.7 gr | 84% | 37,101 psi | 58% | 3084 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 2005 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,530 psi | 78% | 3212 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 49,647 psi | 78% | 3219 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,047 psi | 67% | 3071 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 82% | 40,509 psi | 63% | 3104 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 38,957 psi | 61% | 3071 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 52,939 psi | 83% | 3258 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,300 psi | 80% | 3245 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 33,605 psi | 53% | 2838 fps | 96.7% |
| Norma 204 | <<locked>> | 80% | 50,285 psi | 79% | 3261 fps | 98.7% |
| Norma 217 | <<locked>> | 90% | 33,895 psi | 53% | 2953 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 41,945 psi | 66% | 3143 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 51,039 psi | 80% | 3268 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 40,538 psi | 64% | 3110 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 50,256 psi | 79% | 3264 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 36,376 psi | 57% | 2966 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 2051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,910 psi | 83% | 3304 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,590 psi | 81% | 3333 fps | 100% |
| ReloadSwiss RS 76 | 87.5 gr | 82% | 33,982 psi | 53% | 2976 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 45,890 psi | 72% | 3238 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 44,759 psi | 70% | 3120 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 43,091 psi | 68% | 3120 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,939 psi | 83% | 3258 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,300 psi | 80% | 3245 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,938 psi | 81% | 3199 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,786 psi | 67% | 3114 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 45,847 psi | 72% | 3100 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 48,660 psi | 76% | 3215 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,642 psi | 68% | 3097 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 80% | 52,605 psi | 82% | 3261 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,869 psi | 59% | 2946 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 51,938 psi | 81% | 3261 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,467 psi | 67% | 3107 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 45,063 psi | 71% | 3212 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 86% | 42,743 psi | 67% | 3127 fps | 95.7% |
| Vihtavuori N568 | 95.6 gr | 92% | 46,789 psi | 73% | 3255 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,243 psi | 82% | 3202 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,665 psi | 56% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,074 psi | 63% | 3009 fps | 96.4% |
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 64 powders for 7 mm KM Katzmaier loaded with the .284 | 120gr | AERO SUB,- smax:16.90. Hodgdon Retumbo delivers the highest muzzle velocity at 3,547 fps; across all powders the maximum-charge window runs from 2,231 fps to 3,547 fps. ADI AR 2225 gives the best case fill at 100 %, and 64 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-33, Hodgdon TrailBoss 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, Vihtavuori N568 rank at the top here: for 7 mm KM Katzmaier with the .284 | 120gr | AERO SUB,- smax:16.90 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.