Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 152gr | CutEdge Maximus bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,070 psi | 85% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,405 psi | 87% | 3012 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,913 psi | 89% | 3140 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 56,666 psi | 89% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,521 psi | 89% | 3074 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 54,375 psi | 85% | 3081 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2969 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,134 psi | 68% | 2923 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,681 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,882 psi | 84% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,999 psi | 88% | 3061 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,273 psi | 85% | 3071 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,274 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3104 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,883 psi | 88% | 3136 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 56,202 psi | 88% | 3035 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 56,898 psi | 89% | 3114 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,633 psi | 79% | 3038 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 54,273 psi | 85% | 3071 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 54,317 psi | 85% | 2956 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 3061 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 86% | 57,450 psi | 90% | 3071 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,449 psi | 88% | 3028 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 54,215 psi | 85% | 3012 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,985 psi | 89% | 3058 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,811 psi | 89% | 2986 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3179 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,128 psi | 85% | 3051 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 1893 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,246 psi | 88% | 3002 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,115 psi | 88% | 2986 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 55,956 psi | 88% | 3005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,274 psi | 87% | 2995 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 55,869 psi | 88% | 3114 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 56,449 psi | 88% | 2979 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,592 psi | 86% | 2976 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2989 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,334 psi | 90% | 3061 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,682 psi | 61% | 2841 fps | 97.9% |
| Norma MRP | <<locked>> | 92% | 54,012 psi | 85% | 3094 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,725 psi | 90% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,695 psi | 89% | 3136 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 88% | 56,753 psi | 89% | 3058 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,042 psi | 86% | 3068 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 59% | 1939 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,450 psi | 90% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,608 psi | 87% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,998 psi | 85% | 3064 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3176 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,211 psi | 77% | 3051 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,477 psi | 87% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,667 psi | 90% | 3041 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 92% | 55,492 psi | 87% | 3048 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 54,317 psi | 85% | 2956 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,449 psi | 88% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,592 psi | 86% | 2976 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,305 psi | 90% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,724 psi | 87% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,883 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,056 psi | 86% | 3045 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 55,376 psi | 87% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,637 psi | 87% | 2976 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 54,520 psi | 85% | 2999 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,985 psi | 88% | 3022 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 56,550 psi | 89% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,854 psi | 88% | 2986 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,521 psi | 87% | 2999 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 54,969 psi | 86% | 2992 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,450 psi | 90% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,911 psi | 84% | 3091 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3130 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 3058 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,477 psi | 87% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,667 psi | 90% | 3074 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 57,203 psi | 90% | 3182 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,956 psi | 88% | 3015 fps | 99.6% |
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% | 33,228 psi | 52% | 2566 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 44,947 psi | 70% | 2838 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,583 psi | 67% | 2871 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 53,127 psi | 83% | 2917 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,681 psi | 59% | 2707 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 41,162 psi | 65% | 2818 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 39,494 psi | 62% | 2772 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 30,995 psi | 49% | 2602 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,250 psi | 68% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,067 psi | 78% | 2966 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,623 psi | 59% | 2700 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,824 psi | 56% | 2697 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,068 psi | 50% | 2602 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,891 psi | 44% | 2500 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,041 psi | 55% | 2740 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,690 psi | 78% | 2920 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 35,563 psi | 56% | 2687 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 38,232 psi | 60% | 2789 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 35,824 psi | 56% | 2697 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,877 psi | 75% | 2844 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,884 psi | 59% | 2740 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 46,920 psi | 74% | 2890 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 49,588 psi | 78% | 2910 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 41,104 psi | 64% | 2762 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,221 psi | 68% | 2808 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,857 psi | 64% | 2726 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,679 psi | 56% | 2776 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 46,412 psi | 73% | 2913 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 43% | 1690 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,453 psi | 68% | 2776 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,400 psi | 77% | 2874 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,830 psi | 67% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,902 psi | 67% | 2766 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 86% | 39,537 psi | 62% | 2792 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 46,760 psi | 73% | 2818 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,150 psi | 71% | 2808 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,398 psi | 45% | 2434 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 43,482 psi | 68% | 2812 fps | 97.5% |
| Norma 217 | <<locked>> | 96% | 33,620 psi | 53% | 2710 fps | 95.9% |
| Norma MRP | 62.6 gr | 80% | 34,882 psi | 55% | 2703 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 44,382 psi | 70% | 2828 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,262 psi | 62% | 2799 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 43,250 psi | 68% | 2822 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 34,853 psi | 55% | 2667 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,301 psi | 84% | 3012 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,078 psi | 71% | 2861 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,337 psi | 68% | 2877 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,372 psi | 51% | 2677 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,061 psi | 66% | 2904 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 52,127 psi | 82% | 2904 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,088 psi | 61% | 2690 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 36,941 psi | 58% | 2684 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 47,877 psi | 75% | 2844 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,760 psi | 73% | 2818 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,150 psi | 71% | 2808 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,708 psi | 84% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,156 psi | 82% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,672 psi | 72% | 2762 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,622 psi | 57% | 2680 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,895 psi | 81% | 2897 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,409 psi | 66% | 2733 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 41,263 psi | 65% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,434 psi | 59% | 2671 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 49,806 psi | 78% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,730 psi | 72% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,606 psi | 54% | 2595 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,049 psi | 71% | 2822 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,897 psi | 56% | 2677 fps | 99.5% |
| Vihtavuori N560 | 65.7 gr | 84% | 40,495 psi | 63% | 2822 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 40,437 psi | 63% | 2808 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 46,818 psi | 73% | 2989 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,976 psi | 70% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,920 psi | 74% | 2890 fps | 99.4% |
| Winchester StaBALL HD | 62 gr | 80% | 28,384 psi | 44% | 2608 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,622 psi | 57% | 2648 fps | 95.7% |
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 81 powders for 7 x 66 SE v. Hofe loaded with the .284 | 152gr | CutEdge Maximus. Winchester StaBALL HD delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,182 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 152.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 152gr | CutEdge Maximus they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.