Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 150gr | Nosler SP SolBase bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Hodgdon Retumbo and Winchester StaBALL HD.
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>> | 92% | 54,085 psi | 85% | 2992 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,245 psi | 87% | 3028 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,564 psi | 87% | 3150 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 56,623 psi | 89% | 3156 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 55,999 psi | 88% | 3087 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 57,653 psi | 90% | 3156 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 3048 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 3009 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,173 psi | 88% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,116 psi | 90% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,622 psi | 87% | 3077 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,740 psi | 90% | 3150 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,361 psi | 87% | 3058 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,766 psi | 86% | 3123 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,680 psi | 87% | 3150 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,434 psi | 87% | 3048 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 56,695 psi | 89% | 3130 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3123 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 57,740 psi | 90% | 3150 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,261 psi | 90% | 3025 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3143 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,768 psi | 89% | 3084 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,579 psi | 87% | 3035 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 57,464 psi | 90% | 3087 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,260 psi | 88% | 3071 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,463 psi | 88% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,421 psi | 90% | 3264 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,421 psi | 90% | 3123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1926 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,463 psi | 87% | 3012 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,984 psi | 86% | 2992 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 55,535 psi | 87% | 3018 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,679 psi | 86% | 3009 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 55,506 psi | 87% | 3130 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,901 psi | 66% | 2904 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 55,738 psi | 87% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,580 psi | 90% | 3045 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,448 psi | 87% | 3015 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,362 psi | 88% | 3071 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 42,105 psi | 66% | 2933 fps | 98.8% |
| Norma MRP | <<locked>> | 90% | 53,795 psi | 84% | 3107 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,159 psi | 90% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,521 psi | 89% | 3153 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 56,014 psi | 88% | 3068 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,737 psi | 86% | 3081 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,230 psi | 87% | 3051 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,450 psi | 90% | 3136 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,491 psi | 85% | 3196 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 3140 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 90% | 57,101 psi | 89% | 3054 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 55,013 psi | 86% | 3061 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 57,261 psi | 90% | 3025 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,738 psi | 87% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,580 psi | 90% | 3045 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,955 psi | 86% | 2943 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,578 psi | 86% | 3058 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 54,969 psi | 86% | 2989 fps | 98.4% |
| Somchem S365 | <<locked>> | 86% | 54,288 psi | 85% | 3012 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,535 psi | 87% | 3035 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,854 psi | 88% | 2933 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,332 psi | 87% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,201 psi | 87% | 3015 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 54,476 psi | 85% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,537 psi | 90% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,551 psi | 90% | 3169 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 57,479 psi | 90% | 3146 fps | 99.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3143 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,766 psi | 86% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,014 psi | 89% | 3084 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,580 psi | 90% | 3202 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,521 psi | 87% | 3031 fps | 99.6% |
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 3100 | <<locked>> | 80% | 36,042 psi | 56% | 2648 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 48,066 psi | 75% | 2910 fps | 100% |
| Accurate High Country | 65.4 gr | 80% | 39,204 psi | 61% | 2818 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 84% | 42,569 psi | 67% | 2887 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 40,059 psi | 63% | 2779 fps | 96.8% |
| ADI AR 2213 | <<locked>> | 84% | 40,973 psi | 64% | 2831 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 92% | 39,494 psi | 62% | 2792 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 88% | 31,357 psi | 49% | 2628 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,006 psi | 72% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,345 psi | 84% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,030 psi | 63% | 2772 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,911 psi | 56% | 2713 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,679 psi | 54% | 2677 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,110 psi | 47% | 2582 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,145 psi | 60% | 2825 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,965 psi | 77% | 2930 fps | 95% |
| Bofors RP15 | <<locked>> | 82% | 35,795 psi | 56% | 2710 fps | 95.3% |
| Bofors RP30 | <<locked>> | 90% | 38,754 psi | 61% | 2812 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 35,911 psi | 56% | 2713 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 50,459 psi | 79% | 2910 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 37,855 psi | 59% | 2756 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 49,734 psi | 78% | 2963 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 52,040 psi | 82% | 2976 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 40,828 psi | 64% | 2776 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,975 psi | 67% | 2822 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,424 psi | 68% | 2792 fps | 100% |
| Hodgdon Retumbo | 66.1 gr | 84% | 33,504 psi | 53% | 2726 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 49,458 psi | 78% | 2989 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 44% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,832 psi | 72% | 2841 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,779 psi | 81% | 2940 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 45,643 psi | 72% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,525 psi | 67% | 2779 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 84% | 39,537 psi | 62% | 2812 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,262 psi | 62% | 2844 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 49,385 psi | 77% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,790 psi | 75% | 2877 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,053 psi | 49% | 2520 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 46,064 psi | 72% | 2884 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 32,097 psi | 50% | 2677 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 37,797 psi | 59% | 2789 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 47,137 psi | 74% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,262 psi | 62% | 2815 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,963 psi | 72% | 2894 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 32,634 psi | 51% | 2621 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,080 psi | 75% | 2930 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,238 psi | 72% | 2949 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,721 psi | 51% | 2700 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,438 psi | 67% | 2927 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 41,437 psi | 65% | 2759 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 39,552 psi | 62% | 2762 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,459 psi | 79% | 2910 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,385 psi | 77% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,790 psi | 75% | 2877 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,370 psi | 76% | 2831 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,218 psi | 61% | 2759 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 42,076 psi | 66% | 2746 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 44,222 psi | 69% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,030 psi | 63% | 2743 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 52,504 psi | 82% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,399 psi | 76% | 2887 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,664 psi | 54% | 2608 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,848 psi | 75% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,841 psi | 61% | 2756 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 40,596 psi | 64% | 2841 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 88% | 40,959 psi | 64% | 2831 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 43,859 psi | 69% | 2943 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,630 psi | 75% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,734 psi | 78% | 2963 fps | 99.7% |
| Winchester StaBALL HD | 64.7 gr | 80% | 30,879 psi | 48% | 2700 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,651 psi | 57% | 2664 fps | 95.8% |
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 72 powders for 7 x 66 SE v. Hofe loaded with the .284 | 150gr | Nosler SP SolBase. Hodgdon Retumbo delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,264 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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 High Country, Hodgdon Retumbo, Winchester StaBALL HD rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 150gr | Nosler SP SolBase 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.