Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:140 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 x 66 SE v. Hofe load data
Case Length (l3):2.598"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:93 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:9.0
Load data in caliber 7 x 66 SE v. Hofe with .284 | 140gr | Peregrine Plainsmaster (VLR-4) bullet and 164 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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.
A valid access license is required to use the Personalized Load Calculator.
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 3100 | <<locked>> | 96% | 54,172 psi | 85% | 3084 fps | 100% |
| Accurate 3100 | <<locked>> | 96% | 54,911 psi | 86% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,782 psi | 87% | 3133 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,405 psi | 88% | 3143 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,883 psi | 88% | 3248 fps | 98.6% |
| Accurate High Country | <<locked>> | 94% | 56,710 psi | 89% | 3261 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 57,000 psi | 89% | 3251 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 57,740 psi | 90% | 3264 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 84% | 57,406 psi | 90% | 3097 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 54,447 psi | 85% | 3054 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,159 psi | 90% | 3192 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 57,711 psi | 90% | 3205 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 96% | 54,621 psi | 86% | 3189 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,347 psi | 87% | 3205 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,484 psi | 71% | 2999 fps | 96.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,079 psi | 72% | 3015 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,393 psi | 63% | 2949 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,741 psi | 64% | 2963 fps | 98.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,101 psi | 89% | 3186 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,624 psi | 90% | 3196 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,114 psi | 86% | 3068 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,506 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,058 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,450 psi | 90% | 3202 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,331 psi | 85% | 3153 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,969 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,347 psi | 88% | 3176 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,855 psi | 89% | 3186 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,259 psi | 85% | 3182 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,071 psi | 86% | 3196 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,201 psi | 87% | 3156 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,028 psi | 88% | 3169 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 3159 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,692 psi | 81% | 3169 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,956 psi | 88% | 3255 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,550 psi | 89% | 3264 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,130 psi | 90% | 3146 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,435 psi | 90% | 3156 fps | 96% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,913 psi | 89% | 3225 fps | 99.3% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3238 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 56,043 psi | 88% | 3084 fps | 100% |
| Bofors RP3 | <<locked>> | 82% | 56,449 psi | 88% | 3091 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 3077 fps | 97.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 3091 fps | 97.5% |
| Bofors RP5 | <<locked>> | 96% | 54,259 psi | 85% | 3182 fps | 99.1% |
| Bofors RP5 | <<locked>> | 96% | 55,071 psi | 86% | 3196 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,158 psi | 86% | 3077 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 55,724 psi | 87% | 3091 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,357 psi | 79% | 3100 fps | 98.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 3110 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,101 psi | 88% | 3104 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 56,695 psi | 89% | 3114 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,201 psi | 85% | 3130 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 86% | 54,752 psi | 86% | 3143 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 57,101 psi | 89% | 3146 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 57,667 psi | 90% | 3159 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,824 psi | 86% | 3127 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 94% | 55,303 psi | 87% | 3140 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,348 psi | 90% | 3169 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,085 psi | 85% | 3117 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,246 psi | 90% | 3110 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,609 psi | 90% | 3114 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,082 psi | 78% | 3219 fps | 99.3% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,560 psi | 79% | 3228 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 54,737 psi | 86% | 3169 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 55,274 psi | 87% | 3179 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 58% | 1965 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 58% | 1969 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,956 psi | 89% | 3077 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,334 psi | 90% | 3087 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,869 psi | 89% | 3120 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 57,174 psi | 90% | 3127 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,768 psi | 89% | 3104 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,305 psi | 90% | 3117 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 56,362 psi | 88% | 3123 fps | 100% |
| IMR 4831 | <<locked>> | 90% | 56,927 psi | 89% | 3133 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,086 psi | 88% | 3114 fps | 97.9% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,550 psi | 89% | 3123 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 98% | 56,231 psi | 88% | 3228 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 98% | 56,739 psi | 89% | 3241 fps | 98.6% |
| Lovex S062 | <<locked>> | 82% | 57,116 psi | 90% | 3068 fps | 100% |
| Lovex S062 | <<locked>> | 82% | 57,493 psi | 90% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,188 psi | 90% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,537 psi | 90% | 3110 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,187 psi | 86% | 3094 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 55,753 psi | 87% | 3107 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,721 psi | 81% | 3045 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,243 psi | 82% | 3058 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,085 psi | 85% | 3117 fps | 98.8% |
| Norma 204 | <<locked>> | 88% | 54,636 psi | 86% | 3127 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 54,070 psi | 85% | 3205 fps | 99.8% |
| Norma MRP | <<locked>> | 94% | 54,839 psi | 86% | 3219 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 54,476 psi | 85% | 3117 fps | 100% |
| Norma URP | <<locked>> | 88% | 55,071 psi | 86% | 3127 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,898 psi | 89% | 3248 fps | 98.9% |
| Ramshot Grand | <<locked>> | 98% | 57,682 psi | 90% | 3261 fps | 99% |
| Ramshot Hunter | <<locked>> | 90% | 57,043 psi | 89% | 3176 fps | 100% |
| Ramshot Hunter | <<locked>> | 90% | 57,595 psi | 90% | 3186 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3173 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,767 psi | 87% | 3189 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2011 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,043 psi | 88% | 3091 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,347 psi | 88% | 3097 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,722 psi | 84% | 3140 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,389 psi | 85% | 3153 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,028 psi | 88% | 3156 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,608 psi | 89% | 3166 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,317 psi | 85% | 3186 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,882 psi | 86% | 3196 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3212 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,169 psi | 80% | 3225 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 56,144 psi | 88% | 3081 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 56,782 psi | 89% | 3091 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,795 psi | 86% | 3100 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 92% | 55,085 psi | 86% | 3107 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 55,767 psi | 87% | 3163 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 94% | 56,318 psi | 88% | 3176 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,158 psi | 86% | 3077 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,724 psi | 87% | 3091 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,188 psi | 90% | 3104 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,537 psi | 90% | 3110 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,116 psi | 90% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,493 psi | 90% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,187 psi | 86% | 3094 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 55,753 psi | 87% | 3107 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,273 psi | 85% | 3087 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,882 psi | 86% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,652 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,014 psi | 89% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,739 psi | 89% | 3054 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,000 psi | 89% | 3061 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,317 psi | 87% | 3156 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,898 psi | 88% | 3169 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 55,912 psi | 88% | 3074 fps | 100% |
| Somchem S355 | <<locked>> | 84% | 56,521 psi | 89% | 3084 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,478 psi | 89% | 3091 fps | 97.8% |
| Somchem S361 | <<locked>> | 92% | 56,942 psi | 89% | 3100 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 54,665 psi | 86% | 3117 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 55,056 psi | 86% | 3127 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,260 psi | 88% | 3133 fps | 99.6% |
| Somchem S385 | <<locked>> | 94% | 56,782 psi | 89% | 3143 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 57,363 psi | 90% | 3045 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 54,317 psi | 85% | 3002 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,391 psi | 88% | 3107 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,000 psi | 89% | 3117 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,014 psi | 88% | 3114 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 98% | 56,478 psi | 89% | 3123 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 55,666 psi | 87% | 3114 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,956 psi | 88% | 3120 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,450 psi | 90% | 3186 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,302 psi | 85% | 3140 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,085 psi | 85% | 3199 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 94% | 54,824 psi | 86% | 3212 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3169 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,259 psi | 85% | 3182 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,289 psi | 88% | 3068 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,782 psi | 89% | 3074 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,447 psi | 85% | 3136 fps | 99.7% |
| Winchester 760 | <<locked>> | 86% | 54,752 psi | 86% | 3143 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,565 psi | 89% | 3301 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3314 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,521 psi | 89% | 3130 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,043 psi | 89% | 3140 fps | 99.3% |
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 3100 | <<locked>> | 80% | 30,951 psi | 49% | 2598 fps | 95.3% |
| Accurate 3100 | <<locked>> | 80% | 31,256 psi | 49% | 2605 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 42,148 psi | 66% | 2887 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 42,554 psi | 67% | 2897 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 41,901 psi | 66% | 2969 fps | 95.3% |
| Accurate High Country | <<locked>> | 86% | 42,438 psi | 67% | 2982 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 90% | 45,803 psi | 72% | 3038 fps | 95% |
| Accurate MAGPRO | <<locked>> | 90% | 46,340 psi | 73% | 3051 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,720 psi | 79% | 2989 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 51,097 psi | 80% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,029 psi | 60% | 2812 fps | 95% |
| ADI AR 2209 | <<locked>> | 82% | 38,319 psi | 60% | 2818 fps | 95.1% |
| ADI AR 2213 | 69.1 gr | 90% | 44,527 psi | 70% | 2992 fps | 95.8% |
| ADI AR 2213 | 69.1 gr | 90% | 44,773 psi | 70% | 2995 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 98% | 42,656 psi | 67% | 2936 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 98% | 43,047 psi | 67% | 2946 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 96% | 35,244 psi | 55% | 2815 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 94% | 33,373 psi | 52% | 2759 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,247 psi | 60% | 2812 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,551 psi | 60% | 2818 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,634 psi | 81% | 3012 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,069 psi | 82% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,683 psi | 64% | 2900 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,060 psi | 64% | 2910 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,905 psi | 74% | 3028 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,500 psi | 74% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,869 psi | 59% | 2805 fps | 95% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,174 psi | 60% | 2815 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,392 psi | 60% | 2861 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,899 psi | 61% | 2871 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,936 psi | 47% | 2635 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,240 psi | 47% | 2644 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,892 psi | 47% | 2648 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,168 psi | 47% | 2661 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,416 psi | 51% | 2766 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,895 psi | 52% | 2779 fps | 97.6% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,621 psi | 84% | 3084 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,925 psi | 85% | 3094 fps | 95.1% |
| Bofors RP15 | <<locked>> | 88% | 38,072 psi | 60% | 2848 fps | 95.1% |
| Bofors RP15 | <<locked>> | 88% | 38,580 psi | 60% | 2861 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 52,199 psi | 82% | 3022 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 52,837 psi | 83% | 3038 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,683 psi | 64% | 2940 fps | 95.4% |
| Bofors RP30 | <<locked>> | 96% | 41,336 psi | 65% | 2956 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 38,392 psi | 60% | 2861 fps | 95.4% |
| Bofors RP5 | <<locked>> | 86% | 38,899 psi | 61% | 2871 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,571 psi | 71% | 2900 fps | 98.2% |
| Bofors RP7 | <<locked>> | 80% | 45,905 psi | 72% | 2910 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 40,727 psi | 64% | 2897 fps | 95.4% |
| Hodgdon H1000 | <<locked>> | 94% | 41,104 psi | 64% | 2907 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 52,518 psi | 82% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 52,910 psi | 83% | 3054 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,222 psi | 69% | 2946 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 80% | 44,570 psi | 70% | 2953 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 46,818 psi | 73% | 2963 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 47,369 psi | 74% | 2976 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 44,483 psi | 70% | 2933 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 88% | 44,773 psi | 70% | 2940 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,775 psi | 73% | 2979 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,976 psi | 69% | 2923 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,189 psi | 60% | 2776 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,566 psi | 60% | 2785 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,087 psi | 60% | 2933 fps | 95.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,508 psi | 60% | 2946 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 43,395 psi | 68% | 2959 fps | 98% |
| Hodgdon Superformance | <<locked>> | 80% | 43,918 psi | 69% | 2969 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,383 psi | 43% | 1759 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 43% | 1762 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,330 psi | 84% | 3022 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,722 psi | 84% | 3031 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,176 psi | 65% | 2825 fps | 97.2% |
| IMR 4350 | <<locked>> | 80% | 41,510 psi | 65% | 2835 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,108 psi | 74% | 2933 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,442 psi | 74% | 2943 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 40,306 psi | 63% | 2831 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 40,669 psi | 64% | 2841 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,282 psi | 73% | 2933 fps | 95.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,671 psi | 68% | 2881 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 42,525 psi | 67% | 2956 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 42,989 psi | 67% | 2972 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 53,780 psi | 84% | 3015 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 54,186 psi | 85% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,425 psi | 70% | 2877 fps | 99.3% |
| Lovex S065 | <<locked>> | 80% | 44,759 psi | 70% | 2884 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 42,598 psi | 67% | 2858 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 42,931 psi | 67% | 2867 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 30,371 psi | 48% | 2582 fps | 95% |
| Lovex S071 | <<locked>> | 84% | 30,676 psi | 48% | 2592 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 40,973 psi | 64% | 2858 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 41,292 psi | 65% | 2867 fps | 96% |
| Norma MRP | 65 gr | 82% | 34,969 psi | 55% | 2802 fps | 95.6% |
| Norma MRP | 65 gr | 82% | 35,288 psi | 55% | 2812 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 41,626 psi | 65% | 2877 fps | 99.5% |
| Norma URP | <<locked>> | 80% | 41,989 psi | 66% | 2887 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 42,351 psi | 66% | 2966 fps | 95.6% |
| Ramshot Grand | <<locked>> | 90% | 42,815 psi | 67% | 2979 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,683 psi | 64% | 2871 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 80% | 41,002 psi | 64% | 2881 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 90% | 37,666 psi | 59% | 2831 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 88% | 35,331 psi | 55% | 2772 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1801 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,373 psi | 82% | 3031 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,910 psi | 83% | 3041 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,835 psi | 78% | 3077 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,517 psi | 79% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,221 psi | 66% | 2910 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,583 psi | 67% | 2917 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,625 psi | 64% | 2923 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,104 psi | 64% | 2936 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,925 psi | 55% | 2838 fps | 95.7% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,302 psi | 55% | 2851 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 49,110 psi | 77% | 2969 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 49,559 psi | 78% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,061 psi | 66% | 2854 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 84% | 42,366 psi | 66% | 2861 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 39,624 psi | 62% | 2848 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 82% | 37,463 psi | 59% | 2799 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 45,571 psi | 71% | 2900 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 45,905 psi | 72% | 2910 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,425 psi | 70% | 2877 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,759 psi | 70% | 2884 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 53,780 psi | 84% | 3015 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 54,186 psi | 85% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,598 psi | 67% | 2858 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 80% | 42,931 psi | 67% | 2867 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,850 psi | 80% | 3031 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,227 psi | 80% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,864 psi | 78% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,256 psi | 79% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,395 psi | 68% | 2818 fps | 98.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,743 psi | 69% | 2825 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,276 psi | 62% | 2841 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,130 psi | 58% | 2789 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 49,298 psi | 77% | 2966 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 49,690 psi | 78% | 2976 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,934 psi | 72% | 2900 fps | 95.5% |
| Somchem S361 | <<locked>> | 86% | 46,354 psi | 73% | 2910 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,479 psi | 60% | 2835 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 38,870 psi | 61% | 2841 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,998 psi | 55% | 2703 fps | 95.1% |
| Somchem S385 | <<locked>> | 80% | 35,476 psi | 56% | 2717 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,079 psi | 74% | 2887 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 47,427 psi | 74% | 2894 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,163 psi | 68% | 2877 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 43,511 psi | 68% | 2884 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 37,173 psi | 58% | 2749 fps | 95.6% |
| Vihtavuori N165 | <<locked>> | 86% | 37,637 psi | 59% | 2759 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 42,525 psi | 67% | 2877 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 80% | 42,859 psi | 67% | 2887 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,417 psi | 52% | 2713 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,779 psi | 53% | 2726 fps | 98.5% |
| Vihtavuori N560 | 69.8 gr | 88% | 43,714 psi | 69% | 2995 fps | 95.1% |
| Vihtavuori N560 | 69.8 gr | 88% | 44,208 psi | 69% | 3005 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 43,424 psi | 68% | 2969 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 43,874 psi | 69% | 2982 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,351 psi | 66% | 2838 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,627 psi | 67% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,222 psi | 69% | 2946 fps | 98.4% |
| Winchester 760 | <<locked>> | 80% | 44,788 psi | 70% | 2956 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,440 psi | 41% | 2621 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,687 psi | 42% | 2631 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,624 psi | 62% | 2812 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,089 psi | 63% | 2825 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 164 powders for 7 x 66 SE v. Hofe loaded with the .284 | 140gr | Peregrine Plainsmaster (VLR-4). Winchester StaBALL HD delivers the highest muzzle velocity at 3,314 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,314 fps. ADI AR 2217 gives the best case fill at 100 %, and 164 of the 164 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2225 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, Vihtavuori N560, ADI AR 2213 rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 140gr | Peregrine Plainsmaster (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.