Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 110gr | Norma Soft Point bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, ReloadSwiss RS 70 and Alliant Reloder-26.
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% | 55,259 psi | 87% | 3363 fps | 98.2% |
| Accurate 3100 | <<locked>> | 98% | 54,694 psi | 86% | 3412 fps | 99.3% |
| Accurate 4064 | <<locked>> | 82% | 54,752 psi | 86% | 3360 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,130 psi | 88% | 3474 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 56,043 psi | 88% | 3566 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 54,650 psi | 86% | 3392 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,217 psi | 90% | 3517 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 98% | 54,897 psi | 86% | 3504 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,608 psi | 87% | 3422 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,550 psi | 87% | 3442 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,797 psi | 89% | 3540 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,404 psi | 85% | 3501 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,521 psi | 89% | 3501 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,215 psi | 85% | 3497 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3491 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 3402 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,521 psi | 87% | 3583 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,185 psi | 83% | 3478 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 56,521 psi | 89% | 3435 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,215 psi | 85% | 3497 fps | 97.6% |
| Bofors RP7 | <<locked>> | 88% | 55,738 psi | 87% | 3412 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 84% | 56,898 psi | 89% | 3455 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 54,360 psi | 85% | 3461 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 57,392 psi | 90% | 3481 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,653 psi | 90% | 3488 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,276 psi | 90% | 3451 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,731 psi | 73% | 3435 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,926 psi | 86% | 3497 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 57% | 2231 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,508 psi | 90% | 3435 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,405 psi | 88% | 3409 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 57,029 psi | 89% | 3448 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,392 psi | 90% | 3448 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 56,623 psi | 89% | 3465 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,014 psi | 89% | 3478 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,420 psi | 88% | 3432 fps | 96.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,304 psi | 88% | 3543 fps | 96.7% |
| Lovex S062 | <<locked>> | 84% | 57,725 psi | 90% | 3425 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,725 psi | 90% | 3445 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 55,724 psi | 87% | 3428 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 3297 fps | 98.5% |
| Norma 203B | <<locked>> | 82% | 54,853 psi | 86% | 3425 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,404 psi | 85% | 3442 fps | 97.2% |
| Norma MRP | <<locked>> | 96% | 54,157 psi | 85% | 3533 fps | 98.7% |
| Norma URP | <<locked>> | 90% | 54,665 psi | 86% | 3455 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 55,898 psi | 88% | 3448 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3566 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 57,334 psi | 90% | 3514 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,358 psi | 80% | 3415 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 58% | 2280 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,782 psi | 89% | 3432 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,824 psi | 84% | 3497 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,144 psi | 88% | 3494 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,563 psi | 86% | 3520 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 3432 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 55,999 psi | 88% | 3383 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,811 psi | 89% | 3435 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,042 psi | 86% | 3415 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 96% | 55,840 psi | 88% | 3484 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 88% | 55,738 psi | 87% | 3412 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,725 psi | 90% | 3445 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 57,725 psi | 90% | 3425 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,724 psi | 87% | 3428 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,607 psi | 86% | 3435 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,188 psi | 90% | 3304 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,508 psi | 90% | 3386 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,361 psi | 87% | 3481 fps | 97.8% |
| Somchem S355 | <<locked>> | 86% | 56,507 psi | 89% | 3428 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,014 psi | 89% | 3406 fps | 96% |
| Somchem S365 | <<locked>> | 92% | 54,331 psi | 85% | 3458 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,637 psi | 89% | 3458 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 82% | 56,521 psi | 89% | 3340 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,753 psi | 89% | 3350 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,418 psi | 85% | 3340 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,695 psi | 89% | 3448 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 3425 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 55,056 psi | 86% | 3340 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,941 psi | 88% | 3451 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 57,464 psi | 90% | 3524 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,637 psi | 89% | 3402 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,549 psi | 85% | 3465 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,242 psi | 80% | 3563 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,942 psi | 89% | 3451 fps | 97.9% |
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% | 51,488 psi | 81% | 3294 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 38,595 psi | 60% | 3071 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 51,372 psi | 81% | 3304 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,508 psi | 62% | 3130 fps | 97.8% |
| Accurate High Country | <<locked>> | 94% | 51,938 psi | 81% | 3488 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 48,124 psi | 75% | 3268 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 46,731 psi | 73% | 3307 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 96% | 51,314 psi | 80% | 3428 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,776 psi | 76% | 3297 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,141 psi | 82% | 3379 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,174 psi | 60% | 3140 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,700 psi | 68% | 3294 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 46,398 psi | 73% | 3297 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 47,282 psi | 74% | 3356 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,152 psi | 44% | 2835 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 36,550 psi | 57% | 3114 fps | 95.8% |
| Alliant Reloder-26 | 74.2 gr | 84% | 35,230 psi | 55% | 3117 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 46,601 psi | 73% | 3340 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 49,400 psi | 77% | 3307 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 47,282 psi | 74% | 3356 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 43,207 psi | 68% | 3153 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,661 psi | 78% | 3320 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 41,394 psi | 65% | 3182 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 44,179 psi | 69% | 3209 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,911 psi | 84% | 3419 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,795 psi | 56% | 3015 fps | 98.4% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,627 psi | 68% | 3353 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,553 psi | 64% | 3189 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 43% | 1998 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,618 psi | 79% | 3310 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,779 psi | 83% | 3340 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 41,466 psi | 65% | 3127 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,570 psi | 70% | 3189 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 37,898 psi | 59% | 3074 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 53,490 psi | 84% | 3412 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,982 psi | 83% | 3366 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 52,431 psi | 82% | 3468 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 50,879 psi | 80% | 3307 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,177 psi | 66% | 3130 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 40,451 psi | 63% | 3104 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 37,173 psi | 58% | 3038 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 51,474 psi | 81% | 3363 fps | 100% |
| Norma 204 | <<locked>> | 86% | 47,326 psi | 74% | 3297 fps | 95.5% |
| Norma MRP | 75.4 gr | 88% | 40,480 psi | 63% | 3228 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 39,117 psi | 61% | 3123 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 52,272 psi | 82% | 3386 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 49,211 psi | 77% | 3409 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 37,971 psi | 60% | 3100 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 96% | 44,034 psi | 69% | 3258 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 44% | 2051 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,559 psi | 78% | 3297 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,383 psi | 73% | 3360 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,349 psi | 62% | 3143 fps | 97.4% |
| ReloadSwiss RS 70 | 70 gr | 80% | 38,130 psi | 60% | 3150 fps | 96.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,741 psi | 64% | 3258 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 52,562 psi | 82% | 3323 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,514 psi | 73% | 3248 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 51,576 psi | 81% | 3353 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 90% | 45,469 psi | 71% | 3274 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 43,207 psi | 68% | 3153 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,177 psi | 66% | 3130 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 50,879 psi | 80% | 3307 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,451 psi | 63% | 3104 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,703 psi | 75% | 3304 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,311 psi | 74% | 3143 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,234 psi | 65% | 3061 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 45,121 psi | 71% | 3268 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,688 psi | 73% | 3248 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 53,403 psi | 84% | 3337 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,549 psi | 56% | 3068 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 43,221 psi | 68% | 3189 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 52,939 psi | 83% | 3284 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,287 psi | 84% | 3297 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,628 psi | 70% | 3163 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,524 psi | 64% | 3123 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 92% | 42,685 psi | 67% | 3156 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 51,561 psi | 81% | 3284 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,030 psi | 63% | 3120 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 31,169 psi | 49% | 2930 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,827 psi | 62% | 3084 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 41,568 psi | 65% | 3186 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 28,558 psi | 45% | 2940 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 92% | 46,035 psi | 72% | 3241 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 83 powders for 7 x 66 SE v. Hofe loaded with the .284 | 110gr | Norma Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 3,583 fps; across all powders the maximum-charge window runs from 2,231 fps to 3,583 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 83 of the 83 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 110.0 gr projectile in 0.284" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Norma MRP, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 110gr | Norma Soft Point 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.