Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:168 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:1:10.0
Load data in caliber 7 x 66 SE v. Hofe with .284 | 168gr | Berger Classic Hybrid Hunter bullet and 146 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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.
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>> | 92% | 57,203 psi | 90% | 2884 fps | 100% |
| Accurate 3100 | <<locked>> | 92% | 56,971 psi | 89% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,317 psi | 85% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,317 psi | 85% | 2851 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,853 psi | 86% | 2982 fps | 99.6% |
| Accurate High Country | <<locked>> | 88% | 54,868 psi | 86% | 2982 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 55,927 psi | 88% | 2992 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 90% | 55,695 psi | 87% | 2989 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 55,114 psi | 86% | 2917 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 54,926 psi | 86% | 2913 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 56,710 psi | 89% | 2986 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 56,739 psi | 89% | 2986 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,795 psi | 86% | 2953 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2949 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 2917 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2913 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,448 psi | 87% | 2917 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,230 psi | 87% | 2913 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,448 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,201 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,824 psi | 86% | 2907 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,607 psi | 86% | 2907 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,971 psi | 89% | 2979 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,000 psi | 89% | 2979 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,969 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,766 psi | 86% | 2887 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,404 psi | 85% | 2956 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,186 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,129 psi | 86% | 2976 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,158 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 2972 fps | 96.9% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2969 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,375 psi | 85% | 2890 fps | 97.5% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,725 psi | 90% | 2943 fps | 98.1% |
| Bofors RP15 | <<locked>> | 94% | 56,144 psi | 88% | 2966 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 55,927 psi | 88% | 2963 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 54,114 psi | 85% | 2966 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3018 fps | 99.9% |
| Bofors RP5 | <<locked>> | 92% | 56,971 psi | 89% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 57,000 psi | 89% | 2979 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,072 psi | 88% | 2851 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 55,869 psi | 88% | 2848 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,318 psi | 88% | 2976 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 56,391 psi | 88% | 2976 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 55,680 psi | 87% | 2907 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 55,724 psi | 87% | 2907 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,550 psi | 89% | 2920 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 90% | 56,333 psi | 88% | 2920 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,317 psi | 87% | 2904 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,114 psi | 86% | 2900 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,535 psi | 87% | 2828 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,521 psi | 87% | 2828 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,043 psi | 89% | 3097 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,811 psi | 89% | 3091 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,420 psi | 88% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,173 psi | 88% | 2943 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1814 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 59% | 1811 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,462 psi | 85% | 2841 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,740 psi | 90% | 2890 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,421 psi | 90% | 2871 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,203 psi | 90% | 2867 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,665 psi | 86% | 2844 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,665 psi | 86% | 2841 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,116 psi | 90% | 2900 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,942 psi | 89% | 2897 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 54,940 psi | 86% | 2966 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 92% | 54,723 psi | 86% | 2963 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,817 psi | 70% | 2825 fps | 98.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,657 psi | 70% | 2822 fps | 98.4% |
| Lovex S065 | <<locked>> | 82% | 54,882 psi | 86% | 2818 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 54,665 psi | 86% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,478 psi | 89% | 2867 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,521 psi | 89% | 2867 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,984 psi | 86% | 2851 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,781 psi | 86% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,376 psi | 87% | 2900 fps | 99.9% |
| Norma 204 | <<locked>> | 84% | 55,143 psi | 86% | 2894 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,281 psi | 71% | 2851 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,092 psi | 71% | 2848 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 57,014 psi | 89% | 2999 fps | 100% |
| Norma MRP | <<locked>> | 90% | 56,768 psi | 89% | 2995 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,202 psi | 88% | 2887 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,202 psi | 88% | 2884 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,796 psi | 87% | 2989 fps | 99.8% |
| Ramshot Grand | <<locked>> | 92% | 55,550 psi | 87% | 2986 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 55,158 psi | 86% | 2897 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 54,926 psi | 86% | 2890 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,041 psi | 85% | 2917 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,824 psi | 84% | 2913 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,363 psi | 60% | 1857 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,290 psi | 60% | 1854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,418 psi | 85% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,186 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,695 psi | 89% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,463 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,780 psi | 84% | 3028 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,577 psi | 84% | 3025 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3051 fps | 99.4% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3051 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 56,014 psi | 88% | 2887 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 88% | 55,796 psi | 87% | 2881 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 54,230 psi | 85% | 2894 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 88% | 54,230 psi | 85% | 2897 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,072 psi | 88% | 2851 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 55,869 psi | 88% | 2848 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,882 psi | 86% | 2818 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,665 psi | 86% | 2815 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,478 psi | 89% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,521 psi | 89% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,450 psi | 90% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,217 psi | 90% | 2822 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,479 psi | 90% | 2946 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,493 psi | 90% | 2946 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 57,522 psi | 90% | 2881 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 57,305 psi | 90% | 2877 fps | 99.3% |
| Somchem S365 | <<locked>> | 86% | 57,276 psi | 90% | 2887 fps | 100% |
| Somchem S365 | <<locked>> | 86% | 57,043 psi | 89% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,795 psi | 86% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,607 psi | 86% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,302 psi | 85% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,288 psi | 85% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,491 psi | 85% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,259 psi | 85% | 2848 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 56,768 psi | 89% | 2920 fps | 96.2% |
| Vihtavuori N170 | <<locked>> | 98% | 56,594 psi | 89% | 2913 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 84% | 57,116 psi | 90% | 2881 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 56,884 psi | 89% | 2881 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,971 psi | 89% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,985 psi | 89% | 2917 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,623 psi | 89% | 2999 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 90% | 56,420 psi | 88% | 2995 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 96% | 56,971 psi | 89% | 2986 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 56,811 psi | 89% | 2982 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 53,838 psi | 84% | 2989 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3048 fps | 99.1% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3048 fps | 97.3% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3041 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,479 psi | 90% | 2831 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,246 psi | 90% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,941 psi | 88% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,724 psi | 87% | 2907 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,508 psi | 90% | 3031 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,290 psi | 90% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,433 psi | 85% | 2864 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,259 psi | 85% | 2861 fps | 99.8% |
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% | 38,247 psi | 60% | 2562 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 38,232 psi | 60% | 2559 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,778 psi | 80% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 50,763 psi | 80% | 2799 fps | 100% |
| Accurate High Country | 63 gr | 80% | 41,568 psi | 65% | 2733 fps | 97.4% |
| Accurate High Country | 63 gr | 80% | 41,553 psi | 65% | 2733 fps | 97.4% |
| Accurate MAGPRO | <<locked>> | 80% | 39,218 psi | 61% | 2671 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 80% | 39,204 psi | 61% | 2671 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 42,264 psi | 66% | 2687 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,076 psi | 66% | 2684 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 37,797 psi | 59% | 2621 fps | 96% |
| ADI AR 2213 | <<locked>> | 80% | 37,623 psi | 59% | 2618 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 88% | 36,579 psi | 57% | 2592 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 88% | 36,593 psi | 57% | 2592 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 84% | 29,182 psi | 46% | 2444 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 84% | 29,037 psi | 46% | 2438 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,612 psi | 67% | 2687 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,641 psi | 67% | 2687 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,530 psi | 76% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,530 psi | 76% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,221 psi | 66% | 2680 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,235 psi | 66% | 2680 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,232 psi | 60% | 2631 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,029 psi | 60% | 2628 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,941 psi | 58% | 2585 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,753 psi | 58% | 2579 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,937 psi | 50% | 2510 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,778 psi | 50% | 2507 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,872 psi | 64% | 2736 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,857 psi | 64% | 2736 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,892 psi | 75% | 2907 fps | 95.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,718 psi | 75% | 2904 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,136 psi | 71% | 2717 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 44,976 psi | 70% | 2710 fps | 95% |
| Bofors RP15 | <<locked>> | 80% | 35,447 psi | 56% | 2566 fps | 96.5% |
| Bofors RP15 | <<locked>> | 80% | 35,418 psi | 56% | 2566 fps | 96.5% |
| Bofors RP30 | <<locked>> | 84% | 33,620 psi | 53% | 2552 fps | 95.1% |
| Bofors RP30 | <<locked>> | 84% | 33,591 psi | 53% | 2549 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 38,232 psi | 60% | 2631 fps | 97.5% |
| Bofors RP5 | <<locked>> | 80% | 38,029 psi | 60% | 2628 fps | 97.5% |
| Bofors RP7 | <<locked>> | 80% | 52,649 psi | 83% | 2799 fps | 100% |
| Bofors RP7 | <<locked>> | 80% | 52,446 psi | 82% | 2792 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 34,998 psi | 55% | 2559 fps | 95.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,824 psi | 55% | 2552 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 52,272 psi | 82% | 2854 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 52,054 psi | 82% | 2848 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,321 psi | 63% | 2628 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 80% | 40,118 psi | 63% | 2625 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,610 psi | 62% | 2612 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,436 psi | 62% | 2608 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,730 psi | 72% | 2680 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,716 psi | 72% | 2680 fps | 100% |
| Hodgdon Retumbo | 60.7 gr | 80% | 31,111 psi | 49% | 2530 fps | 95.3% |
| Hodgdon Retumbo | 60.7 gr | 80% | 31,111 psi | 49% | 2530 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 52,402 psi | 82% | 2887 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 52,170 psi | 82% | 2881 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 44% | 1621 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,992 psi | 44% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,051 psi | 75% | 2736 fps | 99.7% |
| IMR 4350 | <<locked>> | 80% | 47,834 psi | 75% | 2730 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,940 psi | 85% | 2818 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,751 psi | 84% | 2815 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,051 psi | 75% | 2740 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,066 psi | 75% | 2740 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,785 psi | 65% | 2625 fps | 96.8% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,597 psi | 65% | 2621 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 80% | 36,492 psi | 57% | 2602 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 80% | 36,318 psi | 57% | 2598 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,345 psi | 54% | 2589 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,200 psi | 54% | 2585 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 51,547 psi | 81% | 2769 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 51,343 psi | 80% | 2762 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,864 psi | 78% | 2762 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,850 psi | 78% | 2762 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,982 psi | 52% | 2441 fps | 98.2% |
| Lovex S071 | <<locked>> | 80% | 32,967 psi | 52% | 2438 fps | 98.2% |
| Norma 204 | <<locked>> | 80% | 48,428 psi | 76% | 2782 fps | 99.3% |
| Norma 204 | <<locked>> | 80% | 48,211 psi | 76% | 2779 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,037 psi | 47% | 2493 fps | 95.7% |
| Norma 217 | <<locked>> | 88% | 30,052 psi | 47% | 2493 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 40,103 psi | 63% | 2700 fps | 99.1% |
| Norma MRP | <<locked>> | 80% | 40,089 psi | 63% | 2700 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 49,371 psi | 77% | 2779 fps | 100% |
| Norma URP | <<locked>> | 80% | 49,385 psi | 77% | 2782 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,056 psi | 56% | 2608 fps | 95.9% |
| Ramshot Grand | <<locked>> | 80% | 36,042 psi | 56% | 2605 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 48,399 psi | 76% | 2789 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 48,167 psi | 75% | 2782 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,285 psi | 51% | 2490 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 80% | 32,126 psi | 50% | 2487 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 45% | 1660 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 45% | 1657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,821 psi | 80% | 2822 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,604 psi | 79% | 2818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,168 psi | 77% | 2848 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,950 psi | 77% | 2841 fps | 100% |
| ReloadSwiss RS 76 | 64.9 gr | 80% | 30,153 psi | 47% | 2503 fps | 96.2% |
| ReloadSwiss RS 76 | 64.9 gr | 80% | 30,008 psi | 47% | 2497 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,088 psi | 61% | 2717 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,102 psi | 61% | 2720 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,337 psi | 68% | 2661 fps | 97.7% |
| Rottweil R 904 | <<locked>> | 80% | 43,308 psi | 68% | 2661 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 80% | 41,611 psi | 65% | 2667 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 80% | 41,611 psi | 65% | 2667 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 52,649 psi | 83% | 2799 fps | 100% |
| Rottweil R 907 | <<locked>> | 80% | 52,446 psi | 82% | 2792 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,547 psi | 81% | 2769 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,343 psi | 80% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,864 psi | 78% | 2762 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,850 psi | 78% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,386 psi | 79% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,386 psi | 79% | 2720 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,307 psi | 65% | 2664 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,278 psi | 65% | 2664 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 44,251 psi | 69% | 2654 fps | 97.2% |
| Somchem S361 | <<locked>> | 80% | 44,077 psi | 69% | 2651 fps | 97.2% |
| Somchem S365 | <<locked>> | 80% | 46,934 psi | 74% | 2740 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 46,673 psi | 73% | 2733 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,293 psi | 66% | 2651 fps | 99.1% |
| Somchem S385 | <<locked>> | 80% | 42,076 psi | 66% | 2644 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 50,923 psi | 80% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,908 psi | 80% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,709 psi | 58% | 2526 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 80% | 36,695 psi | 57% | 2526 fps | 97.6% |
| Vihtavuori N170 | <<locked>> | 96% | 53,243 psi | 83% | 2861 fps | 95.4% |
| Vihtavuori N170 | <<locked>> | 96% | 53,055 psi | 83% | 2858 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 50,183 psi | 79% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 50,169 psi | 79% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,205 psi | 65% | 2657 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,220 psi | 65% | 2657 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,074 psi | 63% | 2690 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 80% | 40,059 psi | 63% | 2690 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 84% | 38,029 psi | 60% | 2631 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 84% | 37,840 psi | 59% | 2625 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 90% | 40,582 psi | 64% | 2733 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 90% | 40,422 psi | 63% | 2733 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 96% | 47,558 psi | 75% | 2917 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 96% | 47,413 psi | 74% | 2913 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,038 psi | 78% | 2730 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,850 psi | 78% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,272 psi | 82% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,257 psi | 82% | 2851 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,663 psi | 53% | 2625 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,460 psi | 52% | 2621 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,682 psi | 61% | 2575 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,508 psi | 60% | 2572 fps | 97.5% |
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 146 powders for 7 x 66 SE v. Hofe loaded with the .284 | 168gr | Berger Classic Hybrid Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,097 fps. ADI AR 2217 gives the best case fill at 100 %, and 146 of the 146 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.284" calls for a 1:10.0 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. Hodgdon Retumbo, ReloadSwiss RS 76, Accurate High Country rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 168gr | Berger Classic Hybrid Hunter 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.