Load Specifications
Load data in caliber 7 mm KM Katzmaier with .284 | 168gr | Peregrine Glider GRM 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, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 84% | 54,752 psi | 86% | 2874 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 50,415 psi | 79% | 2913 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 82% | 53,954 psi | 85% | 2986 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 82% | 55,985 psi | 88% | 2963 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 54,708 psi | 86% | 2982 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 54,143 psi | 85% | 2969 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 54,665 psi | 86% | 3100 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 96% | 57,711 psi | 90% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 55,535 psi | 87% | 2953 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 55,187 psi | 86% | 2976 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 57,290 psi | 90% | 2933 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 54,418 psi | 85% | 2959 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 56,637 psi | 89% | 3071 fps | 99.2% |
| Alliant Reloder-50 | <<locked>> | 98% | 56,565 psi | 89% | 3064 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,042 psi | 86% | 2946 fps | 99.1% |
| Bofors RP15 | <<locked>> | 86% | 54,810 psi | 86% | 2969 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,099 psi | 85% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 55,187 psi | 86% | 2976 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 55,521 psi | 87% | 2986 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 57,130 psi | 90% | 2972 fps | 100% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,130 psi | 88% | 2956 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,041 psi | 85% | 3051 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,942 psi | 59% | 1909 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 57,174 psi | 90% | 2946 fps | 100% |
| IMR 7828 SSC | <<locked>> | 86% | 57,276 psi | 90% | 3028 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 55,999 psi | 88% | 2904 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 56,449 psi | 88% | 3031 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 56,768 psi | 89% | 2904 fps | 100% |
| Norma 217 | <<locked>> | 96% | 53,969 psi | 85% | 2992 fps | 100% |
| Norma MRP | <<locked>> | 82% | 55,259 psi | 87% | 2986 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 54,650 psi | 86% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 57,174 psi | 90% | 2976 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,943 psi | 61% | 1955 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 54,549 psi | 85% | 3035 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 53,519 psi | 84% | 3002 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 56,144 psi | 88% | 2933 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 55,303 psi | 87% | 2946 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2920 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 54,940 psi | 86% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 57,464 psi | 90% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 55,419 psi | 87% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 55,622 psi | 87% | 2900 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 54,868 psi | 86% | 2933 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 82% | 55,114 psi | 86% | 2907 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 54,665 psi | 86% | 2995 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 88% | 55,869 psi | 88% | 2992 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 54,099 psi | 85% | 3009 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 92% | 55,608 psi | 87% | 3074 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 54,288 psi | 85% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 55,448 psi | 87% | 2913 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% | 47,659 psi | 75% | 2762 fps | 100% |
| Accurate 8700 | <<locked>> | 96% | 43,323 psi | 68% | 2779 fps | 96% |
| Accurate MAGPRO | <<locked>> | 80% | 50,198 psi | 79% | 2920 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 80% | 52,243 psi | 82% | 2907 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 47,471 psi | 74% | 2858 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 80% | 35,273 psi | 55% | 2598 fps | 97.4% |
| ADI AR 2218 | 87.9 gr | 88% | 40,393 psi | 63% | 2799 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 32,489 psi | 51% | 2566 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 80% | 51,938 psi | 81% | 2897 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 48,095 psi | 75% | 2858 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 46,891 psi | 73% | 2776 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,060 psi | 64% | 2733 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 86% | 41,771 psi | 65% | 2792 fps | 96% |
| Alliant Reloder-50 | <<locked>> | 90% | 41,713 psi | 65% | 2782 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,165 psi | 71% | 2769 fps | 97.3% |
| Bofors RP15 | <<locked>> | 80% | 44,773 psi | 70% | 2795 fps | 99.7% |
| Bofors RP30 | <<locked>> | 80% | 38,159 psi | 60% | 2674 fps | 98.2% |
| Bofors RP5 | <<locked>> | 80% | 48,095 psi | 75% | 2858 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 38,435 psi | 60% | 2674 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 80% | 49,821 psi | 78% | 2854 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 48,907 psi | 77% | 2838 fps | 99.4% |
| Hodgdon Retumbo | 75.4 gr | 80% | 40,147 psi | 63% | 2795 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,514 psi | 45% | 1709 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 50,328 psi | 79% | 2835 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 80% | 46,238 psi | 72% | 2841 fps | 99.5% |
| IMR 7977 Enduron | <<locked>> | 88% | 52,359 psi | 82% | 2844 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 82% | 32,227 psi | 51% | 2543 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 40,973 psi | 64% | 2641 fps | 100% |
| Norma 217 | <<locked>> | 80% | 30,400 psi | 48% | 2507 fps | 97.3% |
| Norma MRP | <<locked>> | 80% | 51,576 psi | 81% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 46,949 psi | 74% | 2858 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 42,235 psi | 66% | 2730 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,312 psi | 46% | 1752 fps | 100% |
| ReloadSwiss RS 76 | 80.7 gr | 80% | 39,682 psi | 62% | 2769 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 36,419 psi | 57% | 2657 fps | 96.2% |
| Rottweil R 904 | <<locked>> | 80% | 52,518 psi | 82% | 2874 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 51,634 psi | 81% | 2887 fps | 100% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 42,250 psi | 66% | 2733 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 51,285 psi | 80% | 2881 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 53,693 psi | 84% | 2867 fps | 99.8% |
| Somchem S385 | <<locked>> | 80% | 51,851 psi | 81% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 45,556 psi | 71% | 2736 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 84% | 44,730 psi | 70% | 2746 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 80% | 51,503 psi | 81% | 2851 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,024 psi | 80% | 2933 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 80% | 42,337 psi | 66% | 2746 fps | 98.6% |
| Vihtavuori N568 | <<locked>> | 80% | 37,536 psi | 59% | 2677 fps | 96% |
| Vihtavuori N570 | <<locked>> | 84% | 41,466 psi | 65% | 2799 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 46,702 psi | 73% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,095 psi | 75% | 2795 fps | 99.9% |
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 | 168gr | Peregrine Glider GRM. ADI AR 2218 delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,100 fps. Accurate 8700 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 168.0 gr projectile in 0.284" calls for a 1:8.0 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, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for 7 mm KM Katzmaier with the .284 | 168gr | Peregrine Glider GRM 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.