Load Specifications
Load data in caliber 7 x 66 SE v. Hofe with .284 | 136gr | Peregrine VLR-5 bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and ADI AR 2213.
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 2700 | <<locked>> | 82% | 57,638 psi | 90% | 3120 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 57,580 psi | 90% | 3176 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,971 psi | 89% | 3091 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,288 psi | 87% | 3166 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,449 psi | 88% | 3278 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 56,942 psi | 89% | 3130 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,594 psi | 89% | 3225 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 54,230 psi | 85% | 3222 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,827 psi | 62% | 2969 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,650 psi | 86% | 3104 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,347 psi | 88% | 3232 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,867 psi | 84% | 3189 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,782 psi | 87% | 3205 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,566 psi | 90% | 3278 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,766 psi | 86% | 3192 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 3186 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,071 psi | 86% | 3281 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 3258 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,477 psi | 87% | 3117 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 3100 fps | 96.9% |
| Bofors RP5 | <<locked>> | 98% | 57,566 psi | 90% | 3278 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 54,621 psi | 86% | 3107 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 3130 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,796 psi | 87% | 3140 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,348 psi | 90% | 3225 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,739 psi | 89% | 3182 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 54,215 psi | 85% | 3156 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,971 psi | 89% | 3202 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,507 psi | 89% | 3143 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,385 psi | 77% | 3241 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 54,128 psi | 85% | 3199 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,695 psi | 57% | 1998 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,478 psi | 89% | 3114 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,231 psi | 88% | 3150 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,449 psi | 88% | 3140 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,608 psi | 87% | 3153 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,593 psi | 87% | 3143 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 55,506 psi | 87% | 3255 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,652 psi | 89% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,608 psi | 89% | 3133 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,607 psi | 86% | 3123 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 3074 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,580 psi | 90% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,305 psi | 90% | 3209 fps | 99% |
| Norma MRP | <<locked>> | 96% | 57,392 psi | 90% | 3301 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,493 psi | 90% | 3205 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,362 psi | 88% | 3278 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 56,507 psi | 89% | 3209 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,404 psi | 85% | 3202 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 59% | 2044 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,477 psi | 87% | 3123 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,348 psi | 90% | 3238 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,477 psi | 87% | 3189 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,737 psi | 84% | 3219 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,922 psi | 78% | 3238 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 55,579 psi | 87% | 3114 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,128 psi | 85% | 3130 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 55,201 psi | 87% | 3196 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 54,621 psi | 86% | 3107 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,608 psi | 89% | 3133 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,652 psi | 89% | 3104 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,607 psi | 86% | 3123 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,493 psi | 90% | 3179 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,970 psi | 88% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,159 psi | 88% | 3084 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,737 psi | 86% | 3189 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,405 psi | 87% | 3110 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,912 psi | 88% | 3120 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 57,667 psi | 90% | 3205 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,680 psi | 87% | 3163 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,797 psi | 89% | 3081 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,941 psi | 88% | 3143 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,332 psi | 87% | 3140 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,624 psi | 90% | 3081 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,940 psi | 86% | 3143 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,797 psi | 89% | 3219 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,348 psi | 90% | 3294 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 3196 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,724 psi | 87% | 3100 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,609 psi | 90% | 3228 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,753 psi | 87% | 3333 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,883 psi | 88% | 3159 fps | 99% |
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 2700 | <<locked>> | 80% | 53,853 psi | 84% | 3058 fps | 99.2% |
| Accurate 3100 | <<locked>> | 82% | 32,808 psi | 51% | 2684 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 53,403 psi | 84% | 3035 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,713 psi | 65% | 2917 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 48,646 psi | 76% | 3133 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,343 psi | 79% | 3025 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,248 psi | 63% | 2900 fps | 95.5% |
| ADI AR 2213 | 69.3 gr | 90% | 43,918 psi | 69% | 3012 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 34,983 psi | 55% | 2835 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,227 psi | 80% | 3048 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,306 psi | 63% | 2930 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,543 psi | 73% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,030 psi | 63% | 2890 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,712 psi | 64% | 2949 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,472 psi | 46% | 2654 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,560 psi | 49% | 2733 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,966 psi | 50% | 2785 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 40,161 psi | 63% | 2933 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 51,721 psi | 81% | 3058 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,192 psi | 68% | 3035 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 40,712 psi | 64% | 2949 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 44,991 psi | 71% | 2927 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 43,308 psi | 68% | 2992 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,025 psi | 82% | 3077 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,743 psi | 69% | 2972 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,398 psi | 73% | 2992 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 47,166 psi | 74% | 3025 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,137 psi | 72% | 3002 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,840 psi | 59% | 2805 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,666 psi | 59% | 2953 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 42,989 psi | 67% | 2989 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,953 psi | 83% | 3058 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,640 psi | 64% | 2851 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,514 psi | 73% | 2959 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 39,914 psi | 63% | 2864 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,745 psi | 72% | 2959 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 45,034 psi | 71% | 3051 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 53,142 psi | 83% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,874 psi | 69% | 2904 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 42,206 psi | 66% | 2887 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,039 psi | 50% | 2661 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 54,027 psi | 85% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,553 psi | 64% | 2884 fps | 95.5% |
| Norma MRP | 65.2 gr | 82% | 34,490 psi | 54% | 2822 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,220 psi | 65% | 2907 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 41,872 psi | 66% | 2992 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,219 psi | 63% | 2900 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 37,188 psi | 58% | 2851 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,880 psi | 81% | 3061 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,443 psi | 77% | 3117 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,684 psi | 65% | 2936 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,292 psi | 63% | 2953 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,490 psi | 54% | 2854 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,704 psi | 76% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,483 psi | 70% | 2940 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 39,146 psi | 61% | 2874 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 44,991 psi | 71% | 2927 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,874 psi | 69% | 2904 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 53,142 psi | 83% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,206 psi | 66% | 2887 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,328 psi | 79% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,545 psi | 78% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,047 psi | 67% | 2844 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,798 psi | 61% | 2864 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,704 psi | 76% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,513 psi | 71% | 2930 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,840 psi | 59% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,173 psi | 58% | 2792 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 46,673 psi | 73% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,743 psi | 67% | 2907 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 36,695 psi | 57% | 2772 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 53,911 psi | 84% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,090 psi | 66% | 2907 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,040 psi | 52% | 2740 fps | 98.1% |
| Vihtavuori N560 | 71.6 gr | 90% | 46,456 psi | 73% | 3091 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 46,064 psi | 72% | 3064 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,843 psi | 66% | 2867 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,743 psi | 69% | 2972 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,107 psi | 41% | 2638 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,102 psi | 61% | 2835 fps | 95.2% |
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 89 powders for 7 x 66 SE v. Hofe loaded with the .284 | 136gr | Peregrine VLR-5. Winchester StaBALL HD delivers the highest muzzle velocity at 3,333 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,333 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 136.0 gr projectile in 0.284" calls for a 1:9.5 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. Vihtavuori N560, Norma MRP, ADI AR 2213 rank at the top here: for 7 x 66 SE v. Hofe with the .284 | 136gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, ReloadSwiss RS 80, Vihtavuori N170 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.