Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 150gr | Remington PSP Core-Lokt bullet and 74 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>> | 94% | 57,725 psi | 90% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,071 psi | 86% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,390 psi | 87% | 3146 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 92% | 56,246 psi | 88% | 3146 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 90% | 55,854 psi | 88% | 3084 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 57,464 psi | 90% | 3150 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 3045 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,238 psi | 72% | 3005 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,115 psi | 88% | 3081 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,115 psi | 88% | 3081 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,970 psi | 88% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,927 psi | 89% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,448 psi | 87% | 3074 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,609 psi | 90% | 3146 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,201 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,607 psi | 86% | 3120 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,535 psi | 87% | 3146 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,361 psi | 87% | 3045 fps | 96.6% |
| Bofors RP15 | <<locked>> | 96% | 56,507 psi | 89% | 3127 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3120 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 57,609 psi | 90% | 3146 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,116 psi | 90% | 3022 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,956 psi | 89% | 3136 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 56,594 psi | 89% | 3077 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,405 psi | 87% | 3031 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 57,305 psi | 90% | 3084 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,072 psi | 88% | 3064 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,275 psi | 88% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3261 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,217 psi | 90% | 3117 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1923 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,332 psi | 87% | 3009 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,810 psi | 86% | 2989 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 55,361 psi | 87% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,549 psi | 85% | 3005 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 55,376 psi | 87% | 3127 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,800 psi | 66% | 2900 fps | 96.7% |
| Lovex S065 | <<locked>> | 84% | 55,579 psi | 87% | 2986 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,421 psi | 90% | 3038 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,085 psi | 86% | 3009 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,202 psi | 88% | 3064 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 41,974 psi | 66% | 2930 fps | 98.7% |
| Norma MRP | <<locked>> | 92% | 57,464 psi | 90% | 3166 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,985 psi | 89% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,115 psi | 88% | 3150 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 55,825 psi | 87% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 54,592 psi | 86% | 3077 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,029 psi | 60% | 1969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,027 psi | 86% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,290 psi | 90% | 3133 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,085 psi | 85% | 3189 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,243 psi | 83% | 3136 fps | 98.1% |
| Rottweil R 904 | <<locked>> | 90% | 56,942 psi | 89% | 3051 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 54,853 psi | 86% | 3061 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 57,116 psi | 90% | 3022 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,579 psi | 87% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,421 psi | 90% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,795 psi | 86% | 2940 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,418 psi | 85% | 3054 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 54,824 psi | 86% | 2982 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 57,711 psi | 90% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,347 psi | 87% | 3028 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 55,666 psi | 87% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,143 psi | 86% | 2995 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,085 psi | 86% | 3012 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 54,317 psi | 85% | 2999 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,334 psi | 90% | 3084 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,174 psi | 90% | 3163 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 57,377 psi | 90% | 3143 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,201 psi | 85% | 3143 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,621 psi | 86% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,840 psi | 89% | 3084 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,464 psi | 90% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,376 psi | 87% | 3028 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% | 2644 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 48,080 psi | 75% | 2907 fps | 100% |
| Accurate High Country | 65.2 gr | 80% | 39,030 psi | 61% | 2815 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 84% | 42,424 psi | 66% | 2881 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 39,885 psi | 63% | 2776 fps | 96.8% |
| ADI AR 2213 | <<locked>> | 84% | 40,843 psi | 64% | 2828 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 39,392 psi | 62% | 2789 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 31,241 psi | 49% | 2621 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,437 psi | 63% | 2782 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,437 psi | 63% | 2782 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,832 psi | 72% | 2910 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,156 psi | 83% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,059 psi | 63% | 2776 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,781 psi | 56% | 2710 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,548 psi | 54% | 2674 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,979 psi | 47% | 2579 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,985 psi | 60% | 2818 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,895 psi | 81% | 2982 fps | 95.8% |
| Bofors RP15 | <<locked>> | 82% | 35,636 psi | 56% | 2703 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 38,624 psi | 61% | 2808 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 35,781 psi | 56% | 2710 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 50,299 psi | 79% | 2907 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 37,753 psi | 59% | 2753 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 49,588 psi | 78% | 2959 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,895 psi | 81% | 2972 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 82% | 40,683 psi | 64% | 2769 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,830 psi | 67% | 2818 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,279 psi | 68% | 2789 fps | 100% |
| Hodgdon Retumbo | 67.5 gr | 86% | 35,737 psi | 56% | 2792 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 49,284 psi | 77% | 2986 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 44% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,687 psi | 72% | 2838 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,605 psi | 81% | 2933 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 45,455 psi | 71% | 2848 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,409 psi | 66% | 2772 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 39,378 psi | 62% | 2805 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,957 psi | 61% | 2835 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 49,197 psi | 77% | 2881 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,616 psi | 75% | 2874 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,038 psi | 49% | 2516 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 45,905 psi | 72% | 2881 fps | 98.1% |
| Norma 217 | <<locked>> | 92% | 31,981 psi | 50% | 2674 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 37,637 psi | 59% | 2782 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 46,949 psi | 74% | 2894 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,117 psi | 61% | 2812 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 45,803 psi | 72% | 2890 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 32,503 psi | 51% | 2618 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 45% | 1762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,906 psi | 75% | 2927 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,079 psi | 72% | 2946 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,619 psi | 51% | 2697 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,308 psi | 66% | 2923 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 41,278 psi | 65% | 2756 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 39,378 psi | 62% | 2756 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 50,299 psi | 79% | 2907 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,197 psi | 77% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,616 psi | 75% | 2874 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,182 psi | 76% | 2828 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,044 psi | 61% | 2753 fps | 96.7% |
| Somchem S361 | <<locked>> | 80% | 41,945 psi | 66% | 2740 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 44,048 psi | 69% | 2844 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,856 psi | 62% | 2736 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 52,330 psi | 82% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,443 psi | 76% | 2887 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,679 psi | 54% | 2608 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 47,674 psi | 75% | 2887 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,696 psi | 61% | 2753 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 82% | 40,437 psi | 63% | 2835 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 88% | 40,814 psi | 64% | 2831 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 94% | 43,714 psi | 69% | 2940 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,485 psi | 74% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,588 psi | 78% | 2959 fps | 99.7% |
| Winchester StaBALL HD | 64.5 gr | 80% | 30,777 psi | 48% | 2697 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,492 psi | 57% | 2661 fps | 95.7% |
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 74 powders for 7 x 66 SE v. Hofe loaded with the .284 | 150gr | Remington PSP Core-Lokt. Hodgdon Retumbo delivers the highest muzzle velocity at 3,261 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,261 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 | Remington PSP Core-Lokt 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.