Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 160gr | Nosler AccuBond bullet and 72 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 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% | 54,520 psi | 85% | 2907 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,651 psi | 87% | 2936 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,144 psi | 88% | 3068 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 57,014 psi | 89% | 3071 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 90% | 56,521 psi | 89% | 3002 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 54,244 psi | 85% | 3009 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,127 psi | 82% | 2966 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,833 psi | 73% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,521 psi | 89% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,653 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,898 psi | 88% | 2989 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,491 psi | 85% | 3005 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,811 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,143 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,304 psi | 88% | 3064 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,767 psi | 87% | 2966 fps | 97.2% |
| Bofors RP15 | <<locked>> | 96% | 57,290 psi | 90% | 3048 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3041 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 54,491 psi | 85% | 3005 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,479 psi | 90% | 2933 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,682 psi | 90% | 3058 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 57,290 psi | 90% | 2995 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 56,028 psi | 88% | 2949 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,027 psi | 85% | 2943 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,710 psi | 89% | 2986 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,898 psi | 89% | 2913 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,041 psi | 85% | 3114 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,766 psi | 84% | 2972 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 59% | 1854 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,869 psi | 88% | 2927 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,506 psi | 87% | 2904 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,985 psi | 88% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,100 psi | 86% | 2927 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 94% | 55,898 psi | 88% | 3045 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,250 psi | 66% | 2831 fps | 97.4% |
| Lovex S065 | <<locked>> | 84% | 56,130 psi | 88% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,462 psi | 85% | 2900 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,724 psi | 87% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,782 psi | 89% | 2982 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 42,496 psi | 67% | 2861 fps | 99.2% |
| Norma MRP | <<locked>> | 90% | 54,360 psi | 85% | 3025 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,580 psi | 90% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,927 psi | 89% | 3068 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 56,420 psi | 88% | 2982 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,100 psi | 86% | 2995 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 1893 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,608 psi | 87% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 53,882 psi | 84% | 2989 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,868 psi | 86% | 3110 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,751 psi | 84% | 3061 fps | 98.6% |
| Rottweil R 904 | <<locked>> | 90% | 57,508 psi | 90% | 2969 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 90% | 55,506 psi | 87% | 2979 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 57,479 psi | 90% | 2933 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,130 psi | 88% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,462 psi | 85% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,216 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,085 psi | 86% | 2972 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,230 psi | 87% | 2904 fps | 98.7% |
| Somchem S365 | <<locked>> | 86% | 54,766 psi | 86% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,101 psi | 88% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,202 psi | 88% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,651 psi | 87% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,535 psi | 87% | 2927 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,926 psi | 86% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,433 psi | 85% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,128 psi | 85% | 3022 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 54,157 psi | 85% | 3002 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 3064 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,056 psi | 86% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,290 psi | 90% | 2995 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,882 psi | 84% | 3054 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,854 psi | 88% | 2946 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% | 36,448 psi | 57% | 2579 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 48,588 psi | 76% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 39,508 psi | 62% | 2746 fps | 96.2% |
| Accurate MAGPRO | <<locked>> | 84% | 42,989 psi | 67% | 2812 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 40,451 psi | 63% | 2707 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 38,667 psi | 61% | 2697 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 37,391 psi | 59% | 2664 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 29,689 psi | 47% | 2503 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,398 psi | 73% | 2831 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,693 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,451 psi | 63% | 2700 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,390 psi | 57% | 2644 fps | 96.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,056 psi | 55% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,429 psi | 48% | 2520 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,609 psi | 61% | 2753 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,226 psi | 77% | 2848 fps | 95.6% |
| Bofors RP15 | <<locked>> | 80% | 33,736 psi | 53% | 2579 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 36,463 psi | 57% | 2680 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 36,390 psi | 57% | 2644 fps | 96.4% |
| Bofors RP7 | <<locked>> | 80% | 50,807 psi | 80% | 2828 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 35,578 psi | 56% | 2621 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 50,169 psi | 79% | 2881 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,605 psi | 82% | 2894 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 41,249 psi | 65% | 2700 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,538 psi | 64% | 2687 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,787 psi | 69% | 2710 fps | 100% |
| Hodgdon Retumbo | 63.6 gr | 84% | 33,939 psi | 53% | 2664 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 49,864 psi | 78% | 2907 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 44% | 1657 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,267 psi | 73% | 2762 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,127 psi | 82% | 2851 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,064 psi | 72% | 2769 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,190 psi | 63% | 2644 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 82% | 37,260 psi | 58% | 2674 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,057 psi | 58% | 2713 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 49,719 psi | 78% | 2799 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,022 psi | 75% | 2792 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,372 psi | 49% | 2451 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 46,499 psi | 73% | 2805 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 30,400 psi | 48% | 2556 fps | 95% |
| Norma MRP | <<locked>> | 80% | 38,058 psi | 60% | 2713 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 47,355 psi | 74% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,738 psi | 58% | 2674 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 46,369 psi | 73% | 2812 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,837 psi | 51% | 2556 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 45% | 1696 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,602 psi | 76% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,673 psi | 73% | 2867 fps | 100% |
| ReloadSwiss RS 76 | 66.4 gr | 82% | 30,748 psi | 48% | 2569 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,769 psi | 62% | 2789 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 41,626 psi | 65% | 2680 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 39,769 psi | 62% | 2687 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,807 psi | 80% | 2828 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,719 psi | 78% | 2799 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,022 psi | 75% | 2792 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,573 psi | 76% | 2746 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,436 psi | 62% | 2680 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 42,380 psi | 66% | 2671 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 44,701 psi | 70% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,466 psi | 63% | 2671 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 80% | 52,707 psi | 83% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,878 psi | 77% | 2805 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,070 psi | 55% | 2543 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 48,211 psi | 76% | 2808 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,218 psi | 61% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 40,973 psi | 64% | 2766 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 86% | 38,595 psi | 60% | 2700 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 44,251 psi | 69% | 2871 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,051 psi | 75% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,169 psi | 79% | 2881 fps | 99.9% |
| Winchester StaBALL HD | 62.2 gr | 80% | 31,357 psi | 49% | 2635 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,970 psi | 58% | 2592 fps | 96.5% |
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 78 powders for 7 x 66 SE v. Hofe loaded with the .284 | 160gr | Nosler AccuBond. Hodgdon Retumbo delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,854 fps to 3,114 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 160.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, 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, Winchester StaBALL HD rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 160gr | Nosler AccuBond they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.