Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 108gr | Reichenberg Spezial Jagd bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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>> | 82% | 57,130 psi | 90% | 3369 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,563 psi | 86% | 3373 fps | 97.9% |
| Accurate 3100 | <<locked>> | 98% | 53,766 psi | 84% | 3419 fps | 99.1% |
| Accurate 4064 | <<locked>> | 84% | 57,624 psi | 90% | 3432 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,492 psi | 87% | 3491 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 57,464 psi | 90% | 3468 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,579 psi | 89% | 3530 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,377 psi | 90% | 3609 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,897 psi | 86% | 3435 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,013 psi | 86% | 3458 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,956 psi | 88% | 3553 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,548 psi | 84% | 3510 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,927 psi | 88% | 3514 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 3583 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,230 psi | 85% | 3504 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,963 psi | 74% | 3406 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,708 psi | 86% | 3596 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 3488 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 55,956 psi | 88% | 3451 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 3583 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 55,245 psi | 87% | 3428 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 56,159 psi | 88% | 3468 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 57,595 psi | 90% | 3543 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 56,840 psi | 89% | 3497 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,405 psi | 88% | 3465 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,566 psi | 90% | 3514 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 54,259 psi | 85% | 3507 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 57% | 2247 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,797 psi | 89% | 3448 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,738 psi | 87% | 3419 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 56,507 psi | 89% | 3465 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,695 psi | 89% | 3458 fps | 98.8% |
| IMR 4831 | <<locked>> | 92% | 55,811 psi | 87% | 3474 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 56,492 psi | 89% | 3494 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3550 fps | 96.3% |
| Lovex S062 | <<locked>> | 84% | 57,246 psi | 90% | 3445 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,971 psi | 89% | 3458 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 55,158 psi | 86% | 3442 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,747 psi | 75% | 3304 fps | 98.2% |
| Norma 203B | <<locked>> | 82% | 54,375 psi | 85% | 3442 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,696 psi | 90% | 3524 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 57,217 psi | 90% | 3612 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 57,725 psi | 90% | 3533 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,361 psi | 87% | 3468 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,144 psi | 88% | 3570 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 92% | 56,724 psi | 89% | 3530 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,459 psi | 79% | 3415 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 58% | 2300 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,086 psi | 88% | 3448 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,869 psi | 89% | 3573 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,506 psi | 87% | 3507 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,911 psi | 84% | 3533 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,485 psi | 73% | 3432 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 82% | 55,579 psi | 87% | 3402 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,057 psi | 88% | 3451 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,491 psi | 85% | 3428 fps | 96% |
| Rottweil R 905 | <<locked>> | 96% | 55,187 psi | 86% | 3501 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 88% | 55,245 psi | 87% | 3428 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,971 psi | 89% | 3458 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 57,246 psi | 90% | 3445 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,158 psi | 86% | 3442 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,070 psi | 85% | 3448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,521 psi | 89% | 3320 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,811 psi | 89% | 3399 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,708 psi | 86% | 3491 fps | 97.5% |
| Somchem S355 | <<locked>> | 86% | 55,753 psi | 87% | 3442 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 57,392 psi | 90% | 3533 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,796 psi | 87% | 3468 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 55,811 psi | 87% | 3356 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,246 psi | 88% | 3369 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,246 psi | 90% | 3412 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,101 psi | 88% | 3465 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3438 fps | 98% |
| Vihtavuori N540 | <<locked>> | 82% | 54,404 psi | 85% | 3360 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,376 psi | 87% | 3465 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 56,768 psi | 89% | 3537 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,232 psi | 90% | 3596 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,057 psi | 88% | 3419 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,012 psi | 85% | 3478 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,314 psi | 79% | 3576 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,304 psi | 88% | 3461 fps | 97.6% |
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 2495 | <<locked>> | 80% | 53,476 psi | 84% | 3314 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,053 psi | 80% | 3307 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 37,956 psi | 59% | 3081 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,676 psi | 79% | 3320 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,870 psi | 61% | 3136 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 80% | 47,543 psi | 75% | 3284 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 90% | 46,238 psi | 72% | 3320 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,200 psi | 83% | 3533 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,341 psi | 76% | 3314 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,445 psi | 81% | 3392 fps | 99.9% |
| Alliant Reloder-16 | 64 gr | 80% | 37,608 psi | 59% | 3150 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,178 psi | 68% | 3304 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,905 psi | 72% | 3310 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 46,673 psi | 73% | 3366 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,617 psi | 46% | 2910 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 36,143 psi | 57% | 3120 fps | 95.4% |
| Alliant Reloder-26 | 74.2 gr | 84% | 34,635 psi | 54% | 3123 fps | 95.6% |
| Bofors RP15 | <<locked>> | 96% | 45,818 psi | 72% | 3343 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 48,936 psi | 77% | 3327 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 46,673 psi | 73% | 3366 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,670 psi | 67% | 3163 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,182 psi | 77% | 3333 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 40,959 psi | 64% | 3192 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 46,659 psi | 73% | 3291 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,201 psi | 55% | 3025 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,766 psi | 84% | 3448 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 43,178 psi | 68% | 3274 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 2018 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,009 psi | 78% | 3327 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,388 psi | 82% | 3356 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 43,758 psi | 69% | 3202 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,193 psi | 69% | 3202 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 37,304 psi | 58% | 3081 fps | 97% |
| IMR 4895 | <<locked>> | 80% | 52,808 psi | 83% | 3428 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 51,851 psi | 81% | 3478 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 50,444 psi | 79% | 3327 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,640 psi | 65% | 3143 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 39,871 psi | 62% | 3110 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 39,102 psi | 61% | 3107 fps | 95.9% |
| Norma 203B | <<locked>> | 80% | 50,821 psi | 80% | 3376 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,847 psi | 73% | 3307 fps | 95.1% |
| Norma MRP | 77.2 gr | 90% | 42,931 psi | 67% | 3314 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 38,551 psi | 60% | 3133 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 51,532 psi | 81% | 3399 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,141 psi | 82% | 3491 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,565 psi | 59% | 3110 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 96% | 43,453 psi | 68% | 3261 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 43% | 2064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,139 psi | 77% | 3314 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,861 psi | 72% | 3373 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,841 psi | 61% | 3153 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,579 psi | 59% | 3156 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 43,323 psi | 68% | 3353 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 80% | 52,156 psi | 82% | 3343 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,876 psi | 72% | 3258 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,879 psi | 80% | 3360 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 44,962 psi | 70% | 3287 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,670 psi | 67% | 3163 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,640 psi | 65% | 3143 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 50,444 psi | 79% | 3327 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,871 psi | 62% | 3110 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,195 psi | 74% | 3317 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,920 psi | 74% | 3163 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,857 psi | 64% | 3074 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,688 psi | 75% | 3350 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 46,050 psi | 72% | 3258 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 35,114 psi | 55% | 3081 fps | 99.1% |
| Somchem S385 | <<locked>> | 88% | 42,743 psi | 67% | 3199 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 52,489 psi | 82% | 3304 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,634 psi | 82% | 3310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,034 psi | 69% | 3173 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,929 psi | 63% | 3133 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 45,078 psi | 71% | 3235 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 51,111 psi | 80% | 3301 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,595 psi | 62% | 3133 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 32,967 psi | 52% | 3005 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 53,374 psi | 84% | 3520 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,262 psi | 62% | 3094 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 40,959 psi | 64% | 3192 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 28,195 psi | 44% | 2943 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 94% | 48,718 psi | 76% | 3320 fps | 95.9% |
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 94 powders for 7 x 66 SE v. Hofe loaded with the .284 | 108gr | Reichenberg Spezial Jagd. Norma MRP delivers the highest muzzle velocity at 3,612 fps; across all powders the maximum-charge window runs from 2,247 fps to 3,612 fps. ADI AR 2217 gives the best case fill at 100 %, and 94 of the 94 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 108.0 gr projectile in 0.284" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-22 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, Norma MRP, Alliant Reloder-16 rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 108gr | Reichenberg Spezial Jagd they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.