Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 160gr | Peregrine VRG-3 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% | 54,186 psi | 85% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,390 psi | 87% | 2943 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 57,101 psi | 89% | 3081 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 90% | 56,492 psi | 89% | 3012 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 54,360 psi | 85% | 3018 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,185 psi | 82% | 2976 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,695 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,711 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,028 psi | 88% | 2999 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,462 psi | 85% | 3012 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,869 psi | 88% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,332 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,463 psi | 88% | 3071 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,883 psi | 88% | 2979 fps | 97.3% |
| Bofors RP15 | <<locked>> | 96% | 57,290 psi | 90% | 3058 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 3051 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 54,462 psi | 85% | 3012 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 57,464 psi | 90% | 2946 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,954 psi | 85% | 3009 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 57,246 psi | 90% | 3005 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,883 psi | 88% | 2956 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,114 psi | 85% | 2953 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,768 psi | 89% | 2995 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,666 psi | 89% | 2917 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,186 psi | 85% | 3123 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,867 psi | 84% | 2979 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1860 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,651 psi | 87% | 2930 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,434 psi | 87% | 2913 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,840 psi | 88% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,027 psi | 86% | 2936 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 56,217 psi | 88% | 3058 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,134 psi | 66% | 2838 fps | 97.4% |
| Lovex S065 | <<locked>> | 84% | 56,086 psi | 88% | 2910 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,346 psi | 85% | 2910 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,434 psi | 87% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,956 psi | 89% | 2995 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 42,366 psi | 66% | 2864 fps | 99.3% |
| Norma MRP | <<locked>> | 90% | 54,331 psi | 85% | 3031 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,566 psi | 90% | 2979 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 57,188 psi | 90% | 3081 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 86% | 56,565 psi | 89% | 2992 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,463 psi | 87% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 1903 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,637 psi | 87% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,070 psi | 85% | 2995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,839 psi | 86% | 3117 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 3071 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 90% | 57,421 psi | 90% | 2979 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 90% | 55,579 psi | 87% | 2989 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 57,464 psi | 90% | 2946 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,086 psi | 88% | 2910 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,346 psi | 85% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,129 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,158 psi | 86% | 2986 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 55,143 psi | 86% | 2913 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 54,447 psi | 85% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,767 psi | 87% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,217 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,651 psi | 87% | 2917 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,463 psi | 87% | 2936 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 54,810 psi | 86% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,114 psi | 85% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,114 psi | 85% | 3028 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 54,070 psi | 85% | 3009 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 3074 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,837 psi | 81% | 3064 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,158 psi | 86% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,246 psi | 90% | 3005 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,157 psi | 85% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,796 psi | 87% | 2953 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% | 35,810 psi | 56% | 2572 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 48,138 psi | 75% | 2828 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 42,699 psi | 67% | 2815 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 40,248 psi | 63% | 2710 fps | 97.5% |
| ADI AR 2213 | <<locked>> | 82% | 38,334 psi | 60% | 2697 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 37,043 psi | 58% | 2664 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 29,225 psi | 46% | 2500 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,354 psi | 73% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,766 psi | 84% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,219 psi | 63% | 2703 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,027 psi | 56% | 2644 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,722 psi | 54% | 2605 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,994 psi | 47% | 2513 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,305 psi | 60% | 2749 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,168 psi | 77% | 2858 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 33,388 psi | 52% | 2575 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 36,085 psi | 57% | 2674 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 36,027 psi | 56% | 2644 fps | 96.3% |
| Bofors RP7 | <<locked>> | 80% | 50,618 psi | 79% | 2835 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 86% | 35,433 psi | 56% | 2628 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 49,908 psi | 78% | 2884 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 52,475 psi | 82% | 2900 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 40,930 psi | 64% | 2703 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,219 psi | 63% | 2687 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,584 psi | 68% | 2713 fps | 100% |
| Hodgdon Retumbo | 64.8 gr | 84% | 33,475 psi | 52% | 2661 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 49,951 psi | 78% | 2917 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,079 psi | 72% | 2769 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,098 psi | 82% | 2861 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,759 psi | 72% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,958 psi | 63% | 2648 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 36,912 psi | 58% | 2674 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,724 psi | 58% | 2713 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 49,472 psi | 78% | 2805 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,688 psi | 75% | 2795 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 30,763 psi | 48% | 2444 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 46,267 psi | 73% | 2812 fps | 98.7% |
| Norma 217 | <<locked>> | 92% | 31,966 psi | 50% | 2608 fps | 96% |
| Norma MRP | <<locked>> | 80% | 37,855 psi | 59% | 2717 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 47,152 psi | 74% | 2815 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 36,477 psi | 57% | 2680 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 46,093 psi | 72% | 2818 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,430 psi | 51% | 2552 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,471 psi | 45% | 1703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,225 psi | 76% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,615 psi | 73% | 2874 fps | 100% |
| ReloadSwiss RS 76 | 67.7 gr | 82% | 30,255 psi | 47% | 2562 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,508 psi | 62% | 2789 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 41,408 psi | 65% | 2687 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 39,465 psi | 62% | 2687 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,618 psi | 79% | 2835 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,472 psi | 78% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,688 psi | 75% | 2795 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,283 psi | 76% | 2753 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,146 psi | 61% | 2684 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 42,148 psi | 66% | 2677 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 44,454 psi | 70% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,045 psi | 63% | 2671 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 80% | 52,489 psi | 82% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,675 psi | 76% | 2808 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,679 psi | 54% | 2539 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 47,892 psi | 75% | 2812 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,783 psi | 61% | 2677 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 40,785 psi | 64% | 2772 fps | 96% |
| Vihtavuori N565 | <<locked>> | 86% | 38,159 psi | 60% | 2697 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 44,106 psi | 69% | 2874 fps | 96% |
| Vihtavuori N570 | <<locked>> | 98% | 48,167 psi | 75% | 2992 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,964 psi | 75% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,140 psi | 79% | 2887 fps | 99.9% |
| Winchester StaBALL HD | 63.4 gr | 80% | 30,995 psi | 49% | 2628 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,593 psi | 57% | 2592 fps | 96.4% |
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 77 powders for 7 x 66 SE v. Hofe loaded with the .284 | 160gr | Peregrine VRG-3. Hodgdon Retumbo delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,123 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 160.0 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 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 | Peregrine VRG-3 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.