Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:133 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:1:8.0
Load data in caliber 7 x 66 SE v. Hofe with .284 | 133gr | CutEdge ESP Raptor bullet and 90 powders. The key underlying parameters are shown in the table above.
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 2495 | <<locked>> | 82% | 56,985 psi | 89% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,853 psi | 86% | 3091 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3192 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 57,508 psi | 90% | 3120 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,332 psi | 87% | 3189 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,955 psi | 86% | 3291 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 98% | 56,246 psi | 88% | 3297 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 86% | 57,667 psi | 90% | 3163 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,623 psi | 89% | 3245 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 54,201 psi | 85% | 3235 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,782 psi | 89% | 3238 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,042 psi | 86% | 3133 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,347 psi | 87% | 3156 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,333 psi | 88% | 3255 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,983 psi | 85% | 3219 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,014 psi | 88% | 3228 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3294 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,143 psi | 85% | 3209 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,847 psi | 73% | 3136 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,708 psi | 86% | 3307 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 3209 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 55,941 psi | 88% | 3146 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3294 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 55,405 psi | 87% | 3140 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,412 psi | 73% | 3068 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 84% | 56,420 psi | 88% | 3169 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,653 psi | 90% | 3248 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 57,000 psi | 89% | 3202 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 54,375 psi | 85% | 3173 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,000 psi | 89% | 3219 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,695 psi | 89% | 3166 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,876 psi | 72% | 3176 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 88% | 54,201 psi | 85% | 3222 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 57% | 1995 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,072 psi | 89% | 3143 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,014 psi | 88% | 3127 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 56,666 psi | 89% | 3176 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,116 psi | 90% | 3169 fps | 99.6% |
| IMR 4831 | <<locked>> | 92% | 55,811 psi | 87% | 3179 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,782 psi | 89% | 3189 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,825 psi | 87% | 3163 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,448 psi | 87% | 3271 fps | 97.7% |
| Lovex S062 | <<locked>> | 84% | 57,145 psi | 90% | 3133 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,188 psi | 90% | 3163 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,100 psi | 86% | 3153 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,340 psi | 74% | 3028 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 54,650 psi | 86% | 3140 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,780 psi | 84% | 3166 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 57,290 psi | 90% | 3323 fps | 99.7% |
| Norma URP | <<locked>> | 92% | 57,725 psi | 90% | 3228 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,622 psi | 87% | 3169 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,318 psi | 88% | 3294 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 92% | 56,840 psi | 89% | 3235 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,328 psi | 79% | 3150 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 58% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,246 psi | 88% | 3153 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,450 psi | 90% | 3268 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,608 psi | 87% | 3215 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,969 psi | 85% | 3245 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,151 psi | 72% | 3176 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 55,564 psi | 87% | 3094 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,086 psi | 88% | 3143 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,621 psi | 86% | 3150 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 55,361 psi | 87% | 3215 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 55,405 psi | 87% | 3140 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,188 psi | 90% | 3163 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,145 psi | 90% | 3133 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,100 psi | 86% | 3153 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,172 psi | 85% | 3150 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,927 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,710 psi | 89% | 3110 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,882 psi | 86% | 3209 fps | 98.6% |
| Somchem S355 | <<locked>> | 86% | 55,912 psi | 88% | 3140 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,304 psi | 88% | 3140 fps | 97% |
| Somchem S365 | <<locked>> | 94% | 57,696 psi | 90% | 3232 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,912 psi | 88% | 3186 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 56,115 psi | 88% | 3048 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,405 psi | 88% | 3064 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,305 psi | 90% | 3110 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,159 psi | 88% | 3166 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,259 psi | 87% | 3156 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 54,723 psi | 86% | 3061 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,201 psi | 87% | 3169 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,666 psi | 89% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,392 psi | 90% | 3314 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,849 psi | 77% | 3140 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,999 psi | 88% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,114 psi | 85% | 3192 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,256 psi | 79% | 3284 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,202 psi | 88% | 3182 fps | 98.7% |
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 53,171 psi | 83% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,082 psi | 80% | 3025 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 32,634 psi | 51% | 2697 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,459 psi | 79% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,827 psi | 61% | 2874 fps | 98.7% |
| Accurate High Country | <<locked>> | 90% | 44,411 psi | 70% | 3084 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 96% | 52,141 psi | 82% | 3222 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 47,863 psi | 75% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 43,250 psi | 68% | 2986 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 94% | 47,355 psi | 74% | 3100 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,640 psi | 64% | 2923 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,341 psi | 76% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,735 psi | 81% | 3097 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,869 psi | 59% | 2890 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,381 psi | 68% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,205 psi | 63% | 2913 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,538 psi | 64% | 2966 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,528 psi | 43% | 2612 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,488 psi | 49% | 2746 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 29,617 psi | 46% | 2730 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 42,859 psi | 67% | 3015 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 48,747 psi | 76% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,538 psi | 64% | 2966 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,714 psi | 67% | 2894 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 43,424 psi | 68% | 3002 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 49,255 psi | 77% | 3048 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,944 psi | 64% | 2930 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 43,816 psi | 69% | 2953 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 94% | 50,676 psi | 79% | 3107 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,748 psi | 78% | 3087 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,346 psi | 55% | 2769 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,147 psi | 63% | 3035 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,147 psi | 63% | 2943 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 43% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,328 psi | 79% | 3035 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,663 psi | 83% | 3068 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 38,479 psi | 60% | 2815 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,280 psi | 69% | 2930 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 37,275 psi | 58% | 2822 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 53,098 psi | 83% | 3127 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,139 psi | 77% | 3041 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 45,063 psi | 71% | 3064 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 50,444 psi | 79% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,568 psi | 65% | 2871 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,943 psi | 63% | 2851 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,910 psi | 53% | 2733 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,097 psi | 80% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,685 psi | 68% | 2969 fps | 95.9% |
| Norma MRP | <<locked>> | 86% | 36,999 psi | 58% | 2910 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,740 psi | 61% | 2871 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 51,793 psi | 81% | 3107 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,962 psi | 70% | 3074 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 37,550 psi | 59% | 2854 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 94% | 39,914 psi | 63% | 2936 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,081 psi | 77% | 3028 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,108 psi | 72% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,812 psi | 61% | 2894 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,579 psi | 59% | 2904 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,057 psi | 58% | 2943 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 52,185 psi | 82% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,963 psi | 72% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,744 psi | 70% | 2963 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 42,119 psi | 66% | 2959 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,714 psi | 67% | 2894 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,568 psi | 65% | 2871 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 50,444 psi | 79% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,943 psi | 63% | 2851 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,355 psi | 74% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,036 psi | 74% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,712 psi | 64% | 2808 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,742 psi | 65% | 2953 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,079 psi | 72% | 2972 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,168 psi | 77% | 3012 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 35,172 psi | 55% | 2822 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,217 psi | 58% | 2812 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 52,605 psi | 82% | 2995 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,997 psi | 83% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,208 psi | 69% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,103 psi | 63% | 2871 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 39,334 psi | 62% | 2851 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,227 psi | 80% | 3005 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,581 psi | 62% | 2871 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,458 psi | 48% | 2694 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 92% | 46,340 psi | 73% | 3107 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 45,542 psi | 71% | 3071 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,233 psi | 61% | 2835 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,118 psi | 64% | 2933 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,250 psi | 38% | 2569 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,134 psi | 66% | 2920 fps | 95.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 90 powders for 7 x 66 SE v. Hofe loaded with the .284 | 133gr | CutEdge ESP Raptor. Norma MRP delivers the highest muzzle velocity at 3,323 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,323 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 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 133.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.