Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 140gr | Berger VLD Hunting bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 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>> | 96% | 57,682 psi | 90% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,998 psi | 86% | 3117 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,245 psi | 87% | 3235 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 94% | 56,188 psi | 88% | 3235 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 56,202 psi | 88% | 3077 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,912 psi | 88% | 3176 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 57,537 psi | 90% | 3241 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3058 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 3015 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,508 psi | 90% | 3104 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,883 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,290 psi | 90% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,492 psi | 87% | 3163 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,450 psi | 90% | 3235 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,839 psi | 86% | 3150 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3202 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,100 psi | 86% | 3238 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,333 psi | 88% | 3215 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,169 psi | 79% | 3136 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 57,450 psi | 90% | 3235 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 57,537 psi | 90% | 3117 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 3153 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 56,898 psi | 89% | 3176 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,883 psi | 88% | 3130 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 57,493 psi | 90% | 3173 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,246 psi | 88% | 3153 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,362 psi | 88% | 3097 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,055 psi | 83% | 3278 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 57,624 psi | 90% | 3215 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 58% | 1978 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,579 psi | 87% | 3100 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,477 psi | 87% | 3087 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 55,390 psi | 87% | 3107 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,853 psi | 86% | 3094 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 55,230 psi | 87% | 3215 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 56,115 psi | 88% | 3087 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,259 psi | 85% | 3077 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 3097 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,623 psi | 89% | 3159 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 38,435 psi | 60% | 2927 fps | 97% |
| Norma MRP | <<locked>> | 94% | 57,348 psi | 90% | 3258 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 57,305 psi | 90% | 3159 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,086 psi | 88% | 3238 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 56,086 psi | 88% | 3163 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,215 psi | 85% | 3159 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 59% | 2024 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,811 psi | 89% | 3179 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,085 psi | 86% | 3140 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,276 psi | 90% | 3228 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 3271 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 3140 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,361 psi | 87% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,217 psi | 90% | 3143 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 54,824 psi | 86% | 3146 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 57,537 psi | 90% | 3117 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,115 psi | 88% | 3087 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,259 psi | 85% | 3077 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,753 psi | 89% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,201 psi | 87% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,521 psi | 87% | 3035 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,389 psi | 85% | 3143 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 55,071 psi | 86% | 3061 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,259 psi | 87% | 3074 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 57,740 psi | 90% | 3159 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,593 psi | 87% | 3123 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 56,260 psi | 88% | 3031 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,274 psi | 87% | 3091 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,100 psi | 86% | 3100 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,650 psi | 86% | 3097 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,029 psi | 89% | 3176 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,174 psi | 90% | 3251 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,985 psi | 89% | 3225 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,926 psi | 86% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,145 psi | 90% | 3179 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,318 psi | 88% | 3291 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,477 psi | 87% | 3114 fps | 99.2% |
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% | 33,402 psi | 52% | 2657 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 44,817 psi | 70% | 2940 fps | 99.9% |
| Accurate High Country | 67.7 gr | 84% | 41,582 psi | 65% | 2959 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 45,411 psi | 71% | 3028 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 52,837 psi | 83% | 3025 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,001 psi | 63% | 2858 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 88% | 43,714 psi | 69% | 2972 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 42,163 psi | 66% | 2927 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 92% | 33,098 psi | 52% | 2749 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,012 psi | 85% | 3048 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,917 psi | 67% | 2946 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,559 psi | 78% | 3074 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,449 psi | 59% | 2792 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,174 psi | 60% | 2851 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,068 psi | 50% | 2694 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,863 psi | 47% | 2644 fps | 95.5% |
| Alliant Reloder-26 | 66.4 gr | 80% | 34,853 psi | 55% | 2828 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 37,855 psi | 59% | 2841 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 40,712 psi | 64% | 2940 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 38,174 psi | 60% | 2851 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,747 psi | 75% | 2943 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 40,364 psi | 63% | 2887 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 46,485 psi | 73% | 2989 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 49,139 psi | 77% | 3009 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 43,729 psi | 69% | 2917 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,876 psi | 72% | 2963 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,509 psi | 63% | 2822 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,898 psi | 59% | 2927 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 45,977 psi | 72% | 3009 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1768 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,207 psi | 68% | 2871 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,066 psi | 77% | 2972 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 42,670 psi | 67% | 2881 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,440 psi | 71% | 2917 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 42,047 psi | 66% | 2946 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,673 psi | 73% | 2920 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,846 psi | 70% | 2904 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,676 psi | 48% | 2585 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,033 psi | 67% | 2904 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 35,969 psi | 56% | 2864 fps | 96% |
| Norma MRP | <<locked>> | 80% | 34,795 psi | 55% | 2792 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,947 psi | 69% | 2927 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 41,887 psi | 66% | 2956 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,830 psi | 67% | 2917 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 34,693 psi | 54% | 2753 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 44% | 1811 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,634 psi | 82% | 3120 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,846 psi | 70% | 2963 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,931 psi | 67% | 2972 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,853 psi | 55% | 2835 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,005 psi | 71% | 3064 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 51,750 psi | 81% | 3009 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 41,510 psi | 65% | 2841 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 39,334 psi | 62% | 2838 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 47,747 psi | 75% | 2943 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,673 psi | 73% | 2920 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,846 psi | 70% | 2904 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,098 psi | 83% | 3071 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,025 psi | 82% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,556 psi | 71% | 2861 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,986 psi | 61% | 2831 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,721 psi | 81% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,136 psi | 71% | 2884 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,988 psi | 64% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,362 psi | 59% | 2759 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,356 psi | 77% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,455 psi | 71% | 2920 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,941 psi | 58% | 2743 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,962 psi | 70% | 2927 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,940 psi | 56% | 2776 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 86% | 43,163 psi | 68% | 2982 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 43,207 psi | 68% | 2966 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,527 psi | 70% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,659 psi | 73% | 2992 fps | 99% |
| Winchester StaBALL HD | 63.8 gr | 80% | 28,427 psi | 45% | 2694 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,189 psi | 61% | 2799 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 76 powders for 7 x 66 SE v. Hofe loaded with the .284 | 140gr | Berger VLD Hunting. Winchester StaBALL HD delivers the highest muzzle velocity at 3,291 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,291 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 140.0 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 2225, Alliant Reloder-25 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, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 140gr | Berger VLD Hunting 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.