Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 132gr | Peregrine VLR-4 bullet and 87 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% | 56,550 psi | 89% | 3140 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 56,115 psi | 88% | 3196 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,767 psi | 87% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 53,940 psi | 85% | 3186 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 57,711 psi | 90% | 3356 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 96% | 54,940 psi | 86% | 3291 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 55,898 psi | 88% | 3156 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,274 psi | 87% | 3241 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 56,695 psi | 89% | 3301 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,812 psi | 61% | 2976 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,259 psi | 87% | 3235 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,087 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,145 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,998 psi | 86% | 3251 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,434 psi | 88% | 3271 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,520 psi | 85% | 3225 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,115 psi | 88% | 3291 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3268 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 3199 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,403 psi | 84% | 3301 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,013 psi | 86% | 3271 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 54,288 psi | 85% | 3143 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,947 psi | 70% | 3107 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 56,115 psi | 88% | 3291 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 57,101 psi | 89% | 3189 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,675 psi | 76% | 3140 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 82% | 54,665 psi | 86% | 3163 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,072 psi | 88% | 3245 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 55,579 psi | 87% | 3202 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 56,637 psi | 89% | 3235 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,651 psi | 87% | 3215 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,201 psi | 87% | 3163 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,080 psi | 75% | 3248 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 88% | 56,927 psi | 89% | 3287 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 57% | 2024 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,419 psi | 87% | 3140 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,085 psi | 86% | 3169 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,405 psi | 87% | 3163 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,346 psi | 85% | 3176 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,462 psi | 85% | 3159 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,128 psi | 85% | 3268 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 55,579 psi | 87% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,506 psi | 87% | 3156 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,971 psi | 89% | 3205 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,792 psi | 78% | 3091 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 56,434 psi | 88% | 3189 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,043 psi | 88% | 3228 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 55,840 psi | 88% | 3317 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 56,217 psi | 88% | 3228 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,711 psi | 90% | 3219 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,839 psi | 86% | 3287 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,216 psi | 87% | 3228 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,866 psi | 83% | 3215 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,289 psi | 58% | 2070 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,404 psi | 85% | 3143 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,869 psi | 88% | 3261 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,114 psi | 85% | 3209 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,550 psi | 89% | 3304 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,544 psi | 76% | 3245 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 82% | 57,479 psi | 90% | 3143 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,375 psi | 85% | 3140 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,565 psi | 89% | 3205 fps | 98% |
| Rottweil R 905 | <<locked>> | 96% | 57,653 psi | 90% | 3271 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 57,101 psi | 89% | 3189 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,506 psi | 87% | 3156 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,579 psi | 87% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,971 psi | 89% | 3205 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,275 psi | 88% | 3205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,969 psi | 86% | 3012 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,042 psi | 86% | 3104 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,174 psi | 90% | 3268 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 54,288 psi | 85% | 3133 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,723 psi | 86% | 3133 fps | 97% |
| Somchem S365 | <<locked>> | 92% | 56,188 psi | 88% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,389 psi | 85% | 3182 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 55,651 psi | 87% | 3104 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,723 psi | 86% | 3163 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,998 psi | 85% | 3156 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 56,550 psi | 89% | 3107 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,551 psi | 90% | 3225 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,332 psi | 87% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,869 psi | 88% | 3307 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 3209 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,462 psi | 85% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,318 psi | 88% | 3248 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3346 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,534 psi | 85% | 3173 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% | 52,823 psi | 83% | 3077 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 31,908 psi | 50% | 2690 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 52,257 psi | 82% | 3061 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,640 psi | 64% | 2930 fps | 99.1% |
| Accurate High Country | 70 gr | 88% | 43,352 psi | 68% | 3074 fps | 95.1% |
| Accurate MAGPRO | 76.2 gr | 94% | 51,082 psi | 80% | 3219 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 49,400 psi | 77% | 3045 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,076 psi | 66% | 2979 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 46,064 psi | 72% | 3094 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 36,376 psi | 57% | 2907 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,221 psi | 66% | 2976 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,198 psi | 79% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,592 psi | 84% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,349 psi | 62% | 2946 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,339 psi | 71% | 3084 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,785 psi | 65% | 2969 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,639 psi | 62% | 2959 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,689 psi | 45% | 2664 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,777 psi | 48% | 2740 fps | 95% |
| Alliant Reloder-26 | 65.5 gr | 80% | 31,038 psi | 49% | 2789 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,047 psi | 66% | 3015 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 50,589 psi | 79% | 3081 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,945 psi | 66% | 3041 fps | 95.1% |
| Bofors RP5 | <<locked>> | 88% | 39,639 psi | 62% | 2959 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 44,106 psi | 69% | 2946 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 96% | 42,250 psi | 66% | 2999 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 50,952 psi | 80% | 3100 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,714 psi | 67% | 2986 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 45,426 psi | 71% | 3009 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 49,284 psi | 77% | 3100 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,370 psi | 76% | 3084 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,883 psi | 58% | 2822 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,218 psi | 61% | 3028 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 41,872 psi | 66% | 2999 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 43% | 1808 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,953 psi | 81% | 3084 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,769 psi | 62% | 2864 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,629 psi | 72% | 2979 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 38,943 psi | 61% | 2877 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,761 psi | 75% | 3035 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 47,239 psi | 74% | 3133 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 52,112 psi | 82% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,989 psi | 67% | 2923 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 41,307 psi | 65% | 2904 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,286 psi | 52% | 2730 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 52,953 psi | 83% | 3133 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,366 psi | 66% | 2963 fps | 95.7% |
| Norma MRP | <<locked>> | 84% | 36,114 psi | 57% | 2900 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,234 psi | 63% | 2923 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 53,911 psi | 84% | 3163 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,932 psi | 69% | 3071 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 39,247 psi | 62% | 2913 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 38,957 psi | 61% | 2930 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 43% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,850 psi | 80% | 3081 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,167 psi | 75% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,611 psi | 64% | 2949 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,305 psi | 62% | 2966 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,187 psi | 57% | 2936 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 53,896 psi | 84% | 3087 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,630 psi | 75% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,456 psi | 73% | 3018 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 40,901 psi | 64% | 2949 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,106 psi | 69% | 2946 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,989 psi | 67% | 2923 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 52,112 psi | 82% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,307 psi | 65% | 2904 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,240 psi | 77% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,646 psi | 76% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,192 psi | 66% | 2861 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,538 psi | 64% | 2943 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,703 psi | 75% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,645 psi | 75% | 3005 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 36,782 psi | 58% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,783 psi | 61% | 2867 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 45,701 psi | 72% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,756 psi | 65% | 2923 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,435 psi | 60% | 2848 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 52,895 psi | 83% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,133 psi | 64% | 2923 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 32,097 psi | 50% | 2749 fps | 97.5% |
| Vihtavuori N560 | <<locked>> | 92% | 48,631 psi | 76% | 3173 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 44,773 psi | 70% | 3071 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,872 psi | 64% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,714 psi | 67% | 2986 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,396 psi | 40% | 2635 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,031 psi | 64% | 2913 fps | 95.5% |
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 87 powders for 7 x 66 SE v. Hofe loaded with the .284 | 132gr | Peregrine VLR-4. Accurate High Country delivers the highest muzzle velocity at 3,356 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,356 fps. ADI AR 2225 gives the best case fill at 100 %, and 87 of the 87 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 132.0 gr projectile in 0.284" calls for a 1:9.5 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 | 132gr | Peregrine VLR-4 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.