Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 100gr | Barnes Solid bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-16 and ReloadSwiss RS 70.
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 2495 | <<locked>> | 84% | 55,970 psi | 88% | 3461 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,085 psi | 85% | 3451 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,808 psi | 81% | 3474 fps | 98.2% |
| Accurate 4064 | <<locked>> | 86% | 56,434 psi | 88% | 3520 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,795 psi | 84% | 3560 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 82% | 55,405 psi | 87% | 3553 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 56,695 psi | 89% | 3553 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 55,085 psi | 86% | 3589 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,580 psi | 90% | 3553 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,217 psi | 88% | 3694 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 56,144 psi | 88% | 3566 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,377 psi | 90% | 3579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,128 psi | 85% | 3543 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,447 psi | 85% | 3625 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,985 psi | 88% | 3661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,259 psi | 85% | 3573 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 3501 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,467 psi | 67% | 3379 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 3730 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,695 psi | 87% | 3563 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 54,737 psi | 86% | 3533 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 54,491 psi | 85% | 3504 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 86% | 55,361 psi | 87% | 3550 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 92% | 56,173 psi | 88% | 3612 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 90% | 55,956 psi | 88% | 3570 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 82% | 55,999 psi | 88% | 3566 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,897 psi | 86% | 3540 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,521 psi | 89% | 3602 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,884 psi | 89% | 3652 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 56% | 2303 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,232 psi | 90% | 3566 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,463 psi | 88% | 3550 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,159 psi | 88% | 3537 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,564 psi | 87% | 3507 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 55,506 psi | 87% | 3533 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,043 psi | 88% | 3537 fps | 97.9% |
| IMR 4831 | <<locked>> | 94% | 54,331 psi | 85% | 3547 fps | 99.6% |
| IMR 4895 | <<locked>> | 84% | 55,564 psi | 87% | 3579 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,580 psi | 90% | 3553 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,927 psi | 88% | 3524 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,201 psi | 85% | 3465 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 56,188 psi | 88% | 3530 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,173 psi | 88% | 3533 fps | 99% |
| Lovex S070 | <<locked>> | 94% | 57,406 psi | 90% | 3576 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,830 psi | 67% | 3284 fps | 96% |
| Norma 201 | <<locked>> | 84% | 57,566 psi | 90% | 3550 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,694 psi | 86% | 3488 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,043 psi | 89% | 3593 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,376 psi | 88% | 3589 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 55,042 psi | 86% | 3671 fps | 98% |
| Norma URP | <<locked>> | 94% | 56,043 psi | 88% | 3602 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 84% | 54,404 psi | 85% | 3550 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 55,129 psi | 86% | 3596 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 57% | 2362 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,230 psi | 87% | 3524 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,853 psi | 86% | 3619 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,303 psi | 87% | 3658 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,580 psi | 90% | 3645 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,304 psi | 88% | 3675 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 84% | 54,795 psi | 86% | 3491 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,752 psi | 86% | 3527 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3625 fps | 97% |
| Rottweil R 907 | <<locked>> | 90% | 54,491 psi | 85% | 3504 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,173 psi | 88% | 3533 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,927 psi | 88% | 3524 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,188 psi | 88% | 3530 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,406 psi | 90% | 3576 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,695 psi | 89% | 3596 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,029 psi | 89% | 3547 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,696 psi | 90% | 3576 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,013 psi | 86% | 3419 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,043 psi | 88% | 3415 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,014 psi | 88% | 3471 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 3619 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 54,723 psi | 86% | 3412 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,652 psi | 89% | 3533 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,911 psi | 86% | 3530 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,274 psi | 87% | 3609 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,331 psi | 85% | 3530 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 55,492 psi | 87% | 3402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,969 psi | 86% | 3451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,521 psi | 87% | 3465 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,347 psi | 88% | 3497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,766 psi | 86% | 3537 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 86% | 57,493 psi | 90% | 3510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,711 psi | 90% | 3602 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 3599 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,708 psi | 86% | 3497 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,391 psi | 88% | 3615 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,005 psi | 69% | 3543 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,215 psi | 85% | 3520 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,795 psi | 86% | 3524 fps | 96.3% |
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 2495 | <<locked>> | 80% | 49,037 psi | 77% | 3346 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,311 psi | 74% | 3314 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 42,047 psi | 66% | 3268 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 46,369 psi | 73% | 3340 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,983 psi | 55% | 3123 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 51,909 psi | 81% | 3488 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,976 psi | 69% | 3297 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 51,445 psi | 81% | 3517 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,983 psi | 85% | 3491 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,573 psi | 76% | 3543 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 52,605 psi | 82% | 3501 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,411 psi | 70% | 3327 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,442 psi | 74% | 3409 fps | 99.1% |
| Alliant Reloder-16 | 63.6 gr | 82% | 36,724 psi | 58% | 3209 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,001 psi | 61% | 3294 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,952 psi | 80% | 3507 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 32,677 psi | 51% | 3094 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 39,726 psi | 62% | 3304 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 38,696 psi | 61% | 3327 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,011 psi | 82% | 3494 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 44,614 psi | 70% | 3337 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 47,790 psi | 75% | 3366 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 45,136 psi | 71% | 3343 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 45,759 psi | 72% | 3402 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 48,878 psi | 77% | 3425 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,460 psi | 82% | 3501 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,821 psi | 50% | 3015 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,284 psi | 77% | 3468 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 45,368 psi | 71% | 3409 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 2073 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,183 psi | 79% | 3438 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 52,924 psi | 83% | 3491 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,224 psi | 72% | 3343 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,646 psi | 76% | 3366 fps | 96.4% |
| IMR 4350 | <<locked>> | 88% | 45,687 psi | 72% | 3333 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 46,412 psi | 73% | 3340 fps | 95.8% |
| IMR 4831 | <<locked>> | 82% | 36,230 psi | 57% | 3140 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 48,660 psi | 76% | 3445 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,983 psi | 85% | 3491 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,272 psi | 82% | 3461 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,024 psi | 80% | 3406 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 46,514 psi | 73% | 3346 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 40,915 psi | 64% | 3209 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 44,382 psi | 70% | 3307 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 40,045 psi | 63% | 3219 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,720 psi | 79% | 3425 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,387 psi | 81% | 3428 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,804 psi | 73% | 3392 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 52,678 psi | 83% | 3517 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 44,367 psi | 70% | 3435 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 37,478 psi | 59% | 3192 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,282 psi | 74% | 3409 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 41,843 psi | 66% | 3310 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 2123 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,353 psi | 71% | 3317 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,169 psi | 80% | 3550 fps | 99.5% |
| ReloadSwiss RS 60 | 66.8 gr | 80% | 41,466 psi | 65% | 3376 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 37,478 psi | 59% | 3209 fps | 95.6% |
| ReloadSwiss RS 70 | 71.3 gr | 84% | 39,523 psi | 62% | 3294 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,225 psi | 76% | 3366 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 41,872 psi | 66% | 3264 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 96% | 49,951 psi | 78% | 3484 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 86% | 47,790 psi | 75% | 3366 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,915 psi | 64% | 3209 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,272 psi | 82% | 3461 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,514 psi | 73% | 3346 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 44,382 psi | 70% | 3307 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,149 psi | 68% | 3327 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,214 psi | 83% | 3478 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,517 psi | 79% | 3445 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,416 psi | 81% | 3360 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,337 psi | 68% | 3189 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,876 psi | 72% | 3271 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,530 psi | 78% | 3478 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 51,329 psi | 80% | 3353 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,910 psi | 83% | 3468 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 42,322 psi | 66% | 3271 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 31,517 psi | 49% | 3064 fps | 97.2% |
| Somchem S385 | <<locked>> | 94% | 47,471 psi | 74% | 3392 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 51,924 psi | 81% | 3343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,182 psi | 76% | 3337 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,646 psi | 76% | 3343 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,422 psi | 63% | 3186 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 36,376 psi | 57% | 3127 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 47,224 psi | 74% | 3330 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,013 psi | 56% | 3127 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 33,765 psi | 53% | 3123 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,027 psi | 56% | 3094 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 45,963 psi | 72% | 3406 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 31,125 psi | 49% | 3127 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,604 psi | 79% | 3451 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,792 psi | 80% | 3445 fps | 95.3% |
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 110 powders for 7 x 66 SE v. Hofe loaded with the .284 | 100gr | Barnes Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 3,730 fps; across all powders the maximum-charge window runs from 2,303 fps to 3,730 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. ReloadSwiss RS 60, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 100gr | Barnes Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.