Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 150gr | Nosler Ballistic Tip Hunting bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Ramshot Grand.
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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,275 psi | 88% | 3025 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,551 psi | 90% | 3058 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 54,128 psi | 85% | 3123 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 92% | 54,868 psi | 86% | 3123 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 54,650 psi | 86% | 3061 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 56,086 psi | 88% | 3123 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3018 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,947 psi | 70% | 2976 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,752 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,738 psi | 87% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,288 psi | 85% | 3048 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,188 psi | 88% | 3120 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,580 psi | 90% | 3087 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,940 psi | 85% | 3120 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,172 psi | 85% | 3018 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 55,361 psi | 87% | 3107 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 3091 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 56,188 psi | 88% | 3120 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 56,043 psi | 88% | 3002 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 3114 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 55,550 psi | 87% | 3058 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,346 psi | 85% | 3009 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 55,970 psi | 88% | 3058 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,984 psi | 86% | 3041 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,955 psi | 86% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,637 psi | 87% | 3228 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,028 psi | 88% | 3097 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1913 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,346 psi | 85% | 2989 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,421 psi | 90% | 3025 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,288 psi | 85% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,884 psi | 89% | 3041 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 53,911 psi | 84% | 3100 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,640 psi | 64% | 2874 fps | 96.1% |
| Lovex S065 | <<locked>> | 84% | 54,752 psi | 86% | 2969 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,405 psi | 88% | 3022 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 3041 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,259 psi | 87% | 3045 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,770 psi | 64% | 2904 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 56,202 psi | 88% | 3143 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,883 psi | 88% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,621 psi | 86% | 3120 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 54,839 psi | 86% | 3045 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,421 psi | 90% | 3117 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 60% | 1959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,954 psi | 85% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,970 psi | 88% | 3114 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3228 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,488 psi | 81% | 3107 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,551 psi | 90% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,767 psi | 87% | 3028 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 57,450 psi | 90% | 3097 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 56,043 psi | 88% | 3002 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,752 psi | 86% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,405 psi | 88% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,956 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,566 psi | 90% | 2976 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,014 psi | 89% | 3091 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 57,087 psi | 89% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,464 psi | 90% | 3022 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,521 psi | 89% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,172 psi | 85% | 3009 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 54,810 psi | 86% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,624 psi | 90% | 3028 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,580 psi | 90% | 3048 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,710 psi | 89% | 3035 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,999 psi | 88% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,985 psi | 88% | 3140 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 55,767 psi | 87% | 3117 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,692 psi | 83% | 3114 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,159 psi | 90% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,550 psi | 87% | 3058 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,608 psi | 87% | 3176 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,056 psi | 85% | 3002 fps | 99.4% |
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% | 35,070 psi | 55% | 2621 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 46,934 psi | 74% | 2884 fps | 100% |
| Accurate High Country | 65.5 gr | 82% | 40,886 psi | 64% | 2858 fps | 95.9% |
| Accurate MAGPRO | 70 gr | 86% | 44,527 psi | 70% | 2927 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 39,131 psi | 61% | 2756 fps | 96.4% |
| ADI AR 2213 | <<locked>> | 84% | 39,972 psi | 63% | 2805 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 38,493 psi | 60% | 2762 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 32,445 psi | 51% | 2657 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,846 psi | 70% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,938 psi | 81% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,117 psi | 61% | 2749 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,012 psi | 55% | 2687 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,707 psi | 53% | 2654 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,356 psi | 46% | 2556 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,956 psi | 58% | 2795 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,937 psi | 80% | 2959 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 37,260 psi | 58% | 2743 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 37,579 psi | 59% | 2782 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 35,012 psi | 55% | 2687 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 49,458 psi | 78% | 2890 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,854 psi | 58% | 2723 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 48,515 psi | 76% | 2936 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 51,053 psi | 80% | 2953 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,685 psi | 67% | 2812 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,930 psi | 66% | 2795 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,337 psi | 66% | 2769 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,940 psi | 55% | 2766 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 48,341 psi | 76% | 2966 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,775 psi | 44% | 1709 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,889 psi | 70% | 2818 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,807 psi | 80% | 2917 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,585 psi | 70% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,539 psi | 65% | 2749 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 86% | 41,147 psi | 64% | 2844 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,014 psi | 60% | 2812 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 48,356 psi | 76% | 2861 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,789 psi | 73% | 2854 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 30,269 psi | 47% | 2497 fps | 96% |
| Norma 204 | <<locked>> | 80% | 44,918 psi | 70% | 2858 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 33,214 psi | 52% | 2710 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 36,637 psi | 57% | 2759 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 46,050 psi | 72% | 2874 fps | 100% |
| Ramshot Grand | 66.5 gr | 84% | 38,072 psi | 60% | 2782 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 44,773 psi | 70% | 2867 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,924 psi | 53% | 2657 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 45% | 1752 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,804 psi | 73% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,049 psi | 71% | 2927 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,778 psi | 50% | 2667 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,251 psi | 69% | 2963 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 53,998 psi | 85% | 2949 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,509 psi | 63% | 2736 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 38,566 psi | 60% | 2736 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 49,458 psi | 78% | 2890 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,356 psi | 76% | 2861 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,789 psi | 73% | 2854 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,679 psi | 84% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,413 psi | 74% | 2808 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,232 psi | 60% | 2730 fps | 96.3% |
| Somchem S355 | <<locked>> | 80% | 53,621 psi | 84% | 2943 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,147 psi | 64% | 2720 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 43,076 psi | 68% | 2825 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,088 psi | 61% | 2720 fps | 97.4% |
| Vihtavuori N150 | <<locked>> | 80% | 51,430 psi | 81% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,355 psi | 74% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,794 psi | 53% | 2582 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 46,862 psi | 73% | 2871 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,797 psi | 59% | 2733 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 42,366 psi | 66% | 2877 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 88% | 39,755 psi | 62% | 2805 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 96% | 45,672 psi | 72% | 2979 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,543 psi | 73% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,704 psi | 76% | 2940 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,950 psi | 47% | 2671 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,636 psi | 56% | 2638 fps | 95.2% |
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 75 powders for 7 x 66 SE v. Hofe loaded with the .284 | 150gr | Nosler Ballistic Tip Hunting. Hodgdon Retumbo delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,228 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 150.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Accurate MAGPRO, Accurate High Country, Ramshot Grand rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 150gr | Nosler Ballistic Tip Hunting 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.