Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 130gr | Fox Classic Hunter bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate MAGPRO and Accurate High Country.
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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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 2700 | <<locked>> | 82% | 56,579 psi | 89% | 3163 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 56,188 psi | 88% | 3215 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,912 psi | 88% | 3140 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,983 psi | 85% | 3205 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 53,998 psi | 85% | 3314 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,129 psi | 86% | 3314 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 56,028 psi | 88% | 3182 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,419 psi | 87% | 3264 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 56,985 psi | 89% | 3327 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,986 psi | 61% | 2999 fps | 96.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,376 psi | 87% | 3255 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,188 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,246 psi | 90% | 3232 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,984 psi | 86% | 3274 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,434 psi | 88% | 3294 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,636 psi | 86% | 3245 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,405 psi | 88% | 3320 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3291 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,414 psi | 77% | 3225 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,635 psi | 84% | 3323 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3291 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 54,404 psi | 85% | 3166 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,194 psi | 71% | 3133 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 56,405 psi | 88% | 3320 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 57,377 psi | 90% | 3215 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,675 psi | 76% | 3159 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 54,737 psi | 86% | 3186 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,289 psi | 88% | 3271 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 55,579 psi | 87% | 3225 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 56,971 psi | 89% | 3261 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,709 psi | 87% | 3238 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,419 psi | 87% | 3189 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,269 psi | 76% | 3274 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 88% | 57,000 psi | 89% | 3310 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 57% | 2041 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,376 psi | 87% | 3159 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,259 psi | 87% | 3196 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,463 psi | 87% | 3186 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,578 psi | 86% | 3199 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,578 psi | 86% | 3186 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,433 psi | 85% | 3294 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 55,709 psi | 87% | 3153 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,564 psi | 87% | 3179 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,203 psi | 90% | 3228 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 3110 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 56,550 psi | 89% | 3212 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,144 psi | 88% | 3251 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 56,086 psi | 88% | 3343 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 56,449 psi | 88% | 3251 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,042 psi | 86% | 3314 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,317 psi | 87% | 3251 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,272 psi | 83% | 3241 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 58% | 2090 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,433 psi | 85% | 3166 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,869 psi | 88% | 3284 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,259 psi | 85% | 3232 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,637 psi | 89% | 3327 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,849 psi | 77% | 3271 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 82% | 57,392 psi | 90% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,491 psi | 85% | 3163 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,666 psi | 89% | 3228 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 57,740 psi | 90% | 3297 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 57,377 psi | 90% | 3215 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,564 psi | 87% | 3179 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,709 psi | 87% | 3153 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,203 psi | 90% | 3228 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,318 psi | 88% | 3228 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,143 psi | 86% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,274 psi | 87% | 3130 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,276 psi | 90% | 3291 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 54,389 psi | 85% | 3156 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,752 psi | 86% | 3156 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 56,405 psi | 88% | 3251 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,491 psi | 85% | 3202 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 55,941 psi | 88% | 3130 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,737 psi | 86% | 3186 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,041 psi | 85% | 3179 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 56,623 psi | 89% | 3130 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,682 psi | 90% | 3251 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,477 psi | 87% | 3261 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,130 psi | 88% | 3333 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,721 psi | 81% | 3232 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,578 psi | 86% | 3143 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,536 psi | 89% | 3274 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,085 psi | 85% | 3373 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,824 psi | 86% | 3199 fps | 98.6% |
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 2700 | <<locked>> | 80% | 52,910 psi | 83% | 3100 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 34,287 psi | 54% | 2772 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 52,446 psi | 82% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,582 psi | 64% | 2949 fps | 99.1% |
| Accurate High Country | 70.9 gr | 88% | 43,526 psi | 68% | 3097 fps | 95% |
| Accurate MAGPRO | 77.1 gr | 94% | 51,126 psi | 80% | 3238 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 49,371 psi | 77% | 3068 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,105 psi | 66% | 2999 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 46,195 psi | 72% | 3117 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 36,390 psi | 57% | 2923 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,438 psi | 67% | 3002 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,154 psi | 79% | 3094 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,519 psi | 84% | 3169 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,320 psi | 62% | 2966 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,426 psi | 71% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,003 psi | 66% | 2992 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,827 psi | 62% | 2982 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,834 psi | 45% | 2684 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,880 psi | 52% | 2825 fps | 96% |
| Alliant Reloder-26 | 66.4 gr | 80% | 31,212 psi | 49% | 2812 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,018 psi | 66% | 3035 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 50,734 psi | 80% | 3104 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,003 psi | 66% | 3061 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 39,827 psi | 62% | 2982 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,251 psi | 69% | 2969 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 96% | 42,308 psi | 66% | 3018 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 51,082 psi | 80% | 3123 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,830 psi | 67% | 3009 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 45,527 psi | 71% | 3031 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 49,414 psi | 77% | 3123 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,515 psi | 76% | 3107 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,854 psi | 58% | 2841 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,305 psi | 62% | 3048 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,061 psi | 66% | 3022 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 43% | 1827 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,924 psi | 81% | 3104 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,885 psi | 63% | 2887 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,788 psi | 72% | 3002 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 38,899 psi | 61% | 2894 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,921 psi | 75% | 3058 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 47,355 psi | 74% | 3153 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 52,301 psi | 82% | 3100 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,163 psi | 68% | 2946 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 41,452 psi | 65% | 2927 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,359 psi | 52% | 2746 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 52,837 psi | 83% | 3156 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,612 psi | 67% | 2986 fps | 95.6% |
| Norma MRP | <<locked>> | 84% | 36,143 psi | 57% | 2920 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,379 psi | 63% | 2946 fps | 99% |
| Ramshot Grand | <<locked>> | 92% | 44,005 psi | 69% | 3094 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 39,334 psi | 62% | 2933 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 39,030 psi | 61% | 2946 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 44% | 1870 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,937 psi | 80% | 3104 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,254 psi | 76% | 3159 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,683 psi | 64% | 2972 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,349 psi | 62% | 2986 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,230 psi | 57% | 2953 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 53,882 psi | 84% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,790 psi | 75% | 3048 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,717 psi | 73% | 3045 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 41,118 psi | 64% | 2972 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,251 psi | 69% | 2969 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,163 psi | 68% | 2946 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 52,301 psi | 82% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,452 psi | 65% | 2927 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,342 psi | 77% | 3110 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,660 psi | 76% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,279 psi | 66% | 2884 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,770 psi | 64% | 2966 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,848 psi | 75% | 3045 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,747 psi | 75% | 3025 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,912 psi | 58% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,827 psi | 61% | 2884 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 45,847 psi | 72% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,698 psi | 65% | 2943 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,450 psi | 60% | 2864 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 52,982 psi | 83% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,205 psi | 65% | 2943 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 32,082 psi | 50% | 2766 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 92% | 48,704 psi | 76% | 3192 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 44,817 psi | 70% | 3094 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,930 psi | 64% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,830 psi | 67% | 3009 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,469 psi | 40% | 2651 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,191 psi | 65% | 2936 fps | 95.4% |
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 86 powders for 7 x 66 SE v. Hofe loaded with the .284 | 130gr | Fox Classic Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 3,373 fps; across all powders the maximum-charge window runs from 2,041 fps to 3,373 fps. ADI AR 2225 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Alliant Reloder-26, Accurate MAGPRO, Accurate High Country rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 130gr | Fox Classic Hunter 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.