Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 162gr | RWS ID Classic bullet and 73 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 Accurate High Country.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 54,157 psi | 85% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,926 psi | 86% | 2920 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 55,651 psi | 87% | 3051 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 56,492 psi | 89% | 3054 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 55,637 psi | 87% | 2982 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 92% | 57,421 psi | 90% | 3054 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 3022 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 2982 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,941 psi | 88% | 2982 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 55,941 psi | 88% | 2982 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,086 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,303 psi | 87% | 2972 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,682 psi | 90% | 3048 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,666 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,288 psi | 87% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,101 psi | 88% | 3045 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 3041 fps | 96.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,926 psi | 86% | 2956 fps | 97.5% |
| Bofors RP15 | <<locked>> | 94% | 56,840 psi | 89% | 3031 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 55,071 psi | 86% | 3035 fps | 99.7% |
| Bofors RP5 | <<locked>> | 92% | 57,682 psi | 90% | 3048 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,478 psi | 89% | 2917 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,203 psi | 90% | 3045 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 56,405 psi | 88% | 2972 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,058 psi | 89% | 2986 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,086 psi | 88% | 2969 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,101 psi | 88% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,128 psi | 85% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,000 psi | 89% | 3012 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,897 psi | 86% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,172 psi | 86% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,725 psi | 90% | 2966 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 92% | 55,709 psi | 87% | 3035 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2890 fps | 98.5% |
| Lovex S065 | <<locked>> | 82% | 55,288 psi | 87% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,203 psi | 90% | 2936 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,564 psi | 87% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,898 psi | 88% | 2963 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,963 psi | 72% | 2917 fps | 99.8% |
| Norma MRP | <<locked>> | 88% | 53,940 psi | 85% | 3009 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,971 psi | 89% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,695 psi | 89% | 3058 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 55,695 psi | 87% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,955 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 60% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,056 psi | 86% | 2943 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,392 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,694 psi | 86% | 3097 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,041 psi | 85% | 3054 fps | 98.9% |
| Rottweil R 904 | <<locked>> | 88% | 56,521 psi | 89% | 2953 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 88% | 54,969 psi | 86% | 2966 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 56,478 psi | 89% | 2917 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,288 psi | 87% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,203 psi | 90% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,172 psi | 85% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,563 psi | 86% | 2959 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 54,534 psi | 85% | 2890 fps | 99% |
| Somchem S365 | <<locked>> | 84% | 54,186 psi | 85% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,448 psi | 87% | 2936 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,853 psi | 86% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,187 psi | 86% | 2917 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 57,580 psi | 90% | 2989 fps | 96.2% |
| Vihtavuori N550 | <<locked>> | 84% | 57,696 psi | 90% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,725 psi | 90% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,537 psi | 90% | 3071 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 53,925 psi | 85% | 2992 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 54,766 psi | 86% | 3054 fps | 98.6% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,898 psi | 88% | 3120 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,172 psi | 85% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,652 psi | 89% | 2979 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,331 psi | 85% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,158 psi | 86% | 2930 fps | 99.9% |
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% | 38,682 psi | 61% | 2618 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 51,271 psi | 80% | 2861 fps | 100% |
| Accurate High Country | 65.6 gr | 80% | 42,192 psi | 66% | 2795 fps | 97.3% |
| Accurate MAGPRO | <<locked>> | 80% | 39,755 psi | 62% | 2733 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 42,699 psi | 67% | 2749 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 38,116 psi | 60% | 2680 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 88% | 37,130 psi | 58% | 2654 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 84% | 29,472 psi | 46% | 2493 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,018 psi | 67% | 2749 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,018 psi | 67% | 2749 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,110 psi | 77% | 2867 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,627 psi | 67% | 2743 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,595 psi | 60% | 2690 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,405 psi | 59% | 2644 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,300 psi | 51% | 2566 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,524 psi | 65% | 2799 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 48,776 psi | 76% | 2972 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 45,527 psi | 71% | 2776 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 36,042 psi | 56% | 2625 fps | 96.4% |
| Bofors RP30 | <<locked>> | 84% | 34,171 psi | 54% | 2612 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 38,595 psi | 60% | 2690 fps | 97.4% |
| Bofors RP7 | <<locked>> | 80% | 53,142 psi | 83% | 2864 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 35,302 psi | 55% | 2612 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 52,808 psi | 83% | 2917 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,625 psi | 64% | 2684 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,943 psi | 63% | 2667 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,296 psi | 73% | 2743 fps | 100% |
| Hodgdon Retumbo | 63.2 gr | 80% | 31,546 psi | 49% | 2589 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 53,055 psi | 83% | 2953 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 44% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,443 psi | 76% | 2795 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 48,544 psi | 76% | 2805 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,134 psi | 66% | 2684 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 80% | 36,840 psi | 58% | 2657 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 34,853 psi | 55% | 2648 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 52,054 psi | 82% | 2835 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,502 psi | 79% | 2831 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,359 psi | 52% | 2493 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 48,921 psi | 77% | 2848 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,603 psi | 48% | 2552 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 40,756 psi | 64% | 2762 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 50,096 psi | 79% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,477 psi | 57% | 2664 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 48,892 psi | 77% | 2851 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,619 psi | 51% | 2543 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,805 psi | 45% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,314 psi | 80% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,588 psi | 78% | 2907 fps | 100% |
| ReloadSwiss RS 76 | 67.6 gr | 80% | 30,530 psi | 48% | 2556 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 39,856 psi | 62% | 2782 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,714 psi | 69% | 2723 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 80% | 42,250 psi | 66% | 2733 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 53,142 psi | 83% | 2864 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,054 psi | 82% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,502 psi | 79% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,952 psi | 80% | 2782 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,916 psi | 66% | 2726 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 44,556 psi | 70% | 2713 fps | 97.1% |
| Somchem S365 | <<locked>> | 80% | 47,413 psi | 74% | 2799 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,656 psi | 67% | 2710 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 51,329 psi | 80% | 2838 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,057 psi | 58% | 2582 fps | 97.5% |
| Vihtavuori N170 | <<locked>> | 96% | 53,940 psi | 85% | 2927 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 50,720 psi | 79% | 2841 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,727 psi | 65% | 2720 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,698 psi | 64% | 2753 fps | 96.2% |
| Vihtavuori N565 | <<locked>> | 84% | 38,537 psi | 60% | 2690 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 90% | 41,147 psi | 64% | 2795 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 96% | 48,341 psi | 76% | 2982 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,560 psi | 79% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,808 psi | 83% | 2917 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,272 psi | 54% | 2687 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,160 psi | 61% | 2638 fps | 97.5% |
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 73 powders for 7 x 66 SE v. Hofe loaded with the .284 | 162gr | RWS ID Classic. Vihtavuori N570 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,120 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 162.0 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, Alliant Reloder-33 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, Accurate High Country rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 162gr | RWS ID Classic 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.