Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 110gr | Barnes TTSX FB bullet and 67 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 Norma MRP.
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% | 53,969 psi | 85% | 3379 fps | 99.9% |
| Accurate 4350 | <<locked>> | 82% | 54,128 psi | 85% | 3422 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,130 psi | 90% | 3550 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 88% | 55,753 psi | 87% | 3491 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 90% | 53,824 psi | 84% | 3481 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3510 fps | 98.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 3458 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,477 psi | 87% | 3497 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,172 psi | 86% | 3471 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,128 psi | 85% | 3478 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,811 psi | 87% | 3461 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,970 psi | 88% | 3527 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,623 psi | 89% | 3547 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 57,305 psi | 90% | 3533 fps | 99.4% |
| Bofors RP30 | <<locked>> | 98% | 55,709 psi | 87% | 3517 fps | 98.9% |
| Bofors RP5 | <<locked>> | 90% | 54,128 psi | 85% | 3478 fps | 99% |
| Bofors RP7 | <<locked>> | 82% | 55,927 psi | 88% | 3428 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 96% | 54,085 psi | 85% | 3471 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 55,840 psi | 88% | 3481 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 57,232 psi | 90% | 3484 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,086 psi | 88% | 3465 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,695 psi | 87% | 3406 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,665 psi | 86% | 3602 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 82% | 57,246 psi | 90% | 3520 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 58% | 2323 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,462 psi | 85% | 3406 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,377 psi | 90% | 3458 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 54,824 psi | 86% | 3419 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,215 psi | 85% | 3402 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 92% | 55,985 psi | 88% | 3533 fps | 98.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,021 psi | 72% | 3330 fps | 96.7% |
| Lovex S065 | <<locked>> | 82% | 54,592 psi | 86% | 3392 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,594 psi | 89% | 3445 fps | 99.9% |
| Lovex S071 | <<locked>> | 96% | 55,288 psi | 87% | 3402 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,898 psi | 88% | 3471 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 46,688 psi | 73% | 3366 fps | 98.8% |
| Norma MRP | <<locked>> | 88% | 54,186 psi | 85% | 3501 fps | 99.7% |
| Norma URP | <<locked>> | 84% | 56,434 psi | 88% | 3471 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,188 psi | 90% | 3556 fps | 99% |
| Ramshot Hunter | <<locked>> | 84% | 55,651 psi | 87% | 3471 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,840 psi | 88% | 3471 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 2372 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,534 psi | 85% | 3442 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,406 psi | 90% | 3540 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,275 psi | 88% | 3596 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,695 psi | 87% | 3530 fps | 97.8% |
| Rottweil R 904 | <<locked>> | 88% | 56,478 psi | 89% | 3455 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 88% | 54,810 psi | 86% | 3461 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 82% | 55,927 psi | 88% | 3428 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,592 psi | 86% | 3392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,594 psi | 89% | 3445 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,479 psi | 90% | 3399 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,404 psi | 85% | 3455 fps | 99.1% |
| Somchem S361 | <<locked>> | 86% | 54,534 psi | 85% | 3369 fps | 97.7% |
| Somchem S365 | <<locked>> | 86% | 57,682 psi | 90% | 3471 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,216 psi | 87% | 3425 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 82% | 54,288 psi | 85% | 3396 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,274 psi | 87% | 3406 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 84% | 57,319 psi | 90% | 3458 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,479 psi | 90% | 3491 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,809 psi | 84% | 3491 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 94% | 54,505 psi | 85% | 3471 fps | 98% |
| Vihtavuori N568 | <<locked>> | 98% | 56,188 psi | 88% | 3537 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,215 psi | 85% | 3340 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,028 psi | 88% | 3488 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,042 psi | 86% | 3540 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,347 psi | 87% | 3419 fps | 99.1% |
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% | 37,666 psi | 59% | 3035 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 50,430 psi | 79% | 3356 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 49,182 psi | 77% | 3389 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 41,916 psi | 66% | 3199 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 84% | 43,308 psi | 68% | 3255 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 92% | 42,337 psi | 66% | 3215 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 35,563 psi | 56% | 3077 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,341 psi | 76% | 3366 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,047 psi | 66% | 3192 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 40,741 psi | 64% | 3189 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,390 psi | 57% | 3068 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,386 psi | 49% | 2946 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,060 psi | 64% | 3238 fps | 99.3% |
| Bofors RP15 | <<locked>> | 84% | 40,466 psi | 63% | 3176 fps | 95.5% |
| Bofors RP30 | <<locked>> | 90% | 41,800 psi | 66% | 3222 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 40,741 psi | 64% | 3189 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 52,344 psi | 82% | 3363 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 88% | 40,219 psi | 63% | 3166 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 52,199 psi | 82% | 3415 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 84% | 46,296 psi | 73% | 3268 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 45,339 psi | 71% | 3245 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,252 psi | 71% | 3219 fps | 100% |
| Hodgdon Retumbo | 87.2 gr | 86% | 38,058 psi | 60% | 3199 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 52,866 psi | 83% | 3438 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 43% | 2087 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,718 psi | 75% | 3274 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,751 psi | 84% | 3392 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 47,645 psi | 75% | 3287 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 44,309 psi | 69% | 3196 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 44,904 psi | 70% | 3304 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 42,902 psi | 67% | 3261 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 51,111 psi | 80% | 3330 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 49,574 psi | 78% | 3317 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 32,068 psi | 50% | 2877 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 48,399 psi | 76% | 3320 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 37,202 psi | 58% | 3133 fps | 95.8% |
| Norma MRP | 84.2 gr | 80% | 40,089 psi | 63% | 3196 fps | 97% |
| Norma URP | <<locked>> | 80% | 49,211 psi | 77% | 3340 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 41,814 psi | 66% | 3235 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 48,298 psi | 76% | 3327 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 37,478 psi | 59% | 3081 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 44% | 2136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,749 psi | 80% | 3373 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,298 psi | 77% | 3396 fps | 100% |
| ReloadSwiss RS 76 | 91.2 gr | 84% | 35,012 psi | 55% | 3087 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 47,268 psi | 74% | 3363 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 43,047 psi | 67% | 3176 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 41,365 psi | 65% | 3176 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 52,344 psi | 82% | 3363 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,111 psi | 80% | 3330 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 49,574 psi | 78% | 3317 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,096 psi | 79% | 3264 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,031 psi | 64% | 3166 fps | 95.9% |
| Somchem S361 | <<locked>> | 82% | 47,413 psi | 74% | 3228 fps | 96% |
| Somchem S365 | <<locked>> | 80% | 46,470 psi | 73% | 3281 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,771 psi | 65% | 3150 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 80% | 50,720 psi | 79% | 3333 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 38,972 psi | 61% | 3064 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 50,053 psi | 78% | 3330 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,640 psi | 64% | 3163 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 84% | 46,485 psi | 73% | 3340 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 43,903 psi | 69% | 3245 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 94% | 48,124 psi | 75% | 3376 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,386 psi | 79% | 3278 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,373 psi | 82% | 3415 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,402 psi | 52% | 3084 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 41,423 psi | 65% | 3133 fps | 96.1% |
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 67 powders for 7 mm KM Katzmaier loaded with the .284 | 110gr | Barnes TTSX FB. Hodgdon Retumbo delivers the highest muzzle velocity at 3,602 fps; across all powders the maximum-charge window runs from 2,323 fps to 3,602 fps. ADI AR 2217 gives the best case fill at 100 %, and 67 of the 67 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 110.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Norma MRP rank at the top here: for 7 mm KM Katzmaier with the .284 | 110gr | Barnes TTSX FB 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.