Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 160gr | Reichenberg Mag Drückjagd bullet and 71 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 Winchester StaBALL HD.
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>> | 92% | 54,534 psi | 85% | 2920 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,535 psi | 87% | 2946 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 57,217 psi | 90% | 3084 fps | 99% |
| ADI AR 2209 | <<locked>> | 90% | 56,579 psi | 89% | 3012 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 54,462 psi | 85% | 3022 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2986 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,789 psi | 73% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,811 psi | 89% | 3005 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,115 psi | 88% | 3002 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,592 psi | 86% | 3015 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,985 psi | 88% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,724 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,536 psi | 89% | 3074 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,912 psi | 88% | 2982 fps | 97.4% |
| Bofors RP15 | <<locked>> | 96% | 57,363 psi | 90% | 3058 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,172 psi | 86% | 3054 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 54,592 psi | 86% | 3015 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,566 psi | 90% | 2946 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,041 psi | 85% | 3009 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 57,377 psi | 90% | 3005 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,028 psi | 88% | 2959 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,201 psi | 85% | 2956 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,884 psi | 89% | 2999 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,043 psi | 89% | 2923 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,520 psi | 85% | 3130 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,969 psi | 85% | 2982 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,999 psi | 88% | 2936 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,535 psi | 87% | 2917 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,956 psi | 88% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,100 psi | 86% | 2936 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 56,347 psi | 88% | 3061 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,221 psi | 66% | 2838 fps | 97.5% |
| Lovex S065 | <<locked>> | 84% | 56,202 psi | 88% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,447 psi | 85% | 2913 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,753 psi | 87% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,072 psi | 89% | 2999 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 42,656 psi | 67% | 2871 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 54,462 psi | 85% | 3035 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,667 psi | 90% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,319 psi | 90% | 3084 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 56,666 psi | 89% | 2992 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,550 psi | 87% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,753 psi | 87% | 2972 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,215 psi | 85% | 3002 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,158 psi | 86% | 3123 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 3077 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 90% | 57,537 psi | 90% | 2979 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 55,680 psi | 87% | 2989 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 57,566 psi | 90% | 2946 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,202 psi | 88% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,447 psi | 85% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,187 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,259 psi | 87% | 2986 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,448 psi | 87% | 2917 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 54,824 psi | 86% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,130 psi | 88% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,318 psi | 88% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,796 psi | 87% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,782 psi | 87% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 54,911 psi | 86% | 2927 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,491 psi | 85% | 2956 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,244 psi | 85% | 3031 fps | 99% |
| Vihtavuori N565 | <<locked>> | 96% | 54,404 psi | 85% | 3018 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3081 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 3068 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,245 psi | 87% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,624 psi | 90% | 3009 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,505 psi | 85% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,130 psi | 88% | 2959 fps | 99.8% |
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% | 35,940 psi | 56% | 2575 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 48,283 psi | 76% | 2831 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,989 psi | 67% | 2822 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 40,393 psi | 63% | 2713 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 82% | 38,421 psi | 60% | 2700 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 37,275 psi | 58% | 2674 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 86% | 29,298 psi | 46% | 2503 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,514 psi | 73% | 2841 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,335 psi | 63% | 2707 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,172 psi | 57% | 2648 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,853 psi | 55% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,095 psi | 47% | 2520 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,450 psi | 60% | 2753 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,398 psi | 73% | 2805 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 33,504 psi | 53% | 2579 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 36,376 psi | 57% | 2684 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 36,172 psi | 57% | 2648 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 50,749 psi | 80% | 2838 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,505 psi | 56% | 2631 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 50,067 psi | 78% | 2887 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,591 psi | 82% | 2904 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 80% | 38,406 psi | 60% | 2648 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,335 psi | 63% | 2690 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,714 psi | 69% | 2717 fps | 100% |
| Hodgdon Retumbo | 65.1 gr | 84% | 33,721 psi | 53% | 2671 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,082 psi | 78% | 2920 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 44% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,209 psi | 72% | 2772 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,214 psi | 82% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 45,890 psi | 72% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,059 psi | 63% | 2651 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 37,028 psi | 58% | 2677 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,825 psi | 58% | 2713 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 49,603 psi | 78% | 2808 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,805 psi | 75% | 2802 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 30,879 psi | 48% | 2448 fps | 97% |
| Norma 204 | <<locked>> | 80% | 46,369 psi | 73% | 2815 fps | 98.7% |
| Norma 217 | <<locked>> | 90% | 30,081 psi | 47% | 2552 fps | 95% |
| Norma MRP | <<locked>> | 80% | 37,956 psi | 59% | 2720 fps | 98.3% |
| Norma URP | <<locked>> | 80% | 47,282 psi | 74% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,753 psi | 58% | 2687 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,238 psi | 72% | 2818 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,663 psi | 51% | 2559 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 45% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,559 psi | 76% | 2858 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,746 psi | 73% | 2877 fps | 100% |
| ReloadSwiss RS 76 | 68 gr | 82% | 30,472 psi | 48% | 2569 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,769 psi | 62% | 2795 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 41,524 psi | 65% | 2690 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,581 psi | 62% | 2690 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,749 psi | 80% | 2838 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,603 psi | 78% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,805 psi | 75% | 2802 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,588 psi | 76% | 2759 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,262 psi | 62% | 2684 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 42,235 psi | 66% | 2680 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 44,614 psi | 70% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,161 psi | 63% | 2674 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 80% | 52,605 psi | 82% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,834 psi | 77% | 2812 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,780 psi | 55% | 2546 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,225 psi | 76% | 2818 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,914 psi | 61% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,072 psi | 60% | 2710 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 38,290 psi | 60% | 2700 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 92% | 41,162 psi | 65% | 2812 fps | 95% |
| Vihtavuori N570 | <<locked>> | 98% | 48,486 psi | 76% | 3002 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,066 psi | 75% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,256 psi | 79% | 2890 fps | 99.9% |
| Winchester StaBALL HD | 63.6 gr | 80% | 31,154 psi | 49% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,695 psi | 57% | 2595 fps | 96.5% |
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 71 powders for 7 x 66 SE v. Hofe loaded with the .284 | 160gr | Reichenberg Mag Drückjagd. Hodgdon Retumbo delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,130 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 160.0 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, Bofors RP30 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, Winchester StaBALL HD rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 160gr | Reichenberg Mag Drückjagd 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.