Load Specifications
Load data in caliber 7 mm PRC with .284 | 150gr | Hornady ECX bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Norma MRP.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 57,841 psi | 89% | 2917 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 57,522 psi | 88% | 2972 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,305 psi | 88% | 2887 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,303 psi | 85% | 2956 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,391 psi | 87% | 3071 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 57,159 psi | 88% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,536 psi | 87% | 3015 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 98% | 58,189 psi | 90% | 3077 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,842 psi | 61% | 2779 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 58,363 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 58,595 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,594 psi | 87% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,957 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,028 psi | 86% | 3002 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,682 psi | 89% | 3068 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 58,537 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,372 psi | 77% | 2979 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,143 psi | 85% | 3074 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,246 psi | 87% | 3045 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,622 psi | 86% | 2913 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,267 psi | 71% | 2900 fps | 96.8% |
| Bofors RP5 | <<locked>> | 98% | 57,682 psi | 89% | 3068 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 58,552 psi | 90% | 2966 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,748 psi | 77% | 2927 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 55,767 psi | 86% | 2933 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,406 psi | 88% | 3015 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,855 psi | 87% | 2976 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 58,204 psi | 90% | 3015 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,826 psi | 87% | 2995 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,681 psi | 87% | 2936 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,385 psi | 76% | 3035 fps | 99% |
| Hodgdon Superformance | <<locked>> | 88% | 58,320 psi | 90% | 3058 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 57% | 1847 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,478 psi | 87% | 2907 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,405 psi | 87% | 2949 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,594 psi | 87% | 2936 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,811 psi | 86% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,535 psi | 85% | 2940 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 55,550 psi | 85% | 3048 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,898 psi | 88% | 2900 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,913 psi | 88% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 58,305 psi | 90% | 2976 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,184 psi | 79% | 2877 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,885 psi | 89% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,392 psi | 88% | 3002 fps | 99% |
| Norma MRP | <<locked>> | 96% | 57,348 psi | 88% | 3091 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,624 psi | 89% | 2995 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,217 psi | 86% | 3068 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 56,579 psi | 87% | 3002 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,230 psi | 83% | 2999 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,536 psi | 58% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,680 psi | 86% | 2920 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,392 psi | 88% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,492 psi | 85% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,972 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,777 psi | 77% | 3031 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 58,726 psi | 90% | 2910 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 55,738 psi | 86% | 2910 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,827 psi | 89% | 2982 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 94% | 55,376 psi | 85% | 2989 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 88% | 58,552 psi | 90% | 2966 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,913 psi | 88% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,898 psi | 88% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 58,305 psi | 90% | 2976 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,595 psi | 89% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,173 psi | 86% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,115 psi | 86% | 2884 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 58,755 psi | 90% | 3045 fps | 99.4% |
| Somchem S355 | <<locked>> | 84% | 55,680 psi | 86% | 2907 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,869 psi | 86% | 2920 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 57,885 psi | 89% | 2999 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,796 psi | 86% | 2963 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,942 psi | 88% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,999 psi | 86% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,288 psi | 85% | 2940 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,580 psi | 89% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 58,784 psi | 90% | 2995 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,840 psi | 87% | 3009 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,319 psi | 88% | 3084 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,721 psi | 81% | 2989 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,782 psi | 86% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,667 psi | 89% | 3018 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,535 psi | 85% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,854 psi | 86% | 2956 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 54,070 psi | 83% | 2858 fps | 99.2% |
| Accurate 3100 | <<locked>> | 82% | 33,025 psi | 51% | 2510 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 53,708 psi | 83% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,771 psi | 64% | 2723 fps | 99.5% |
| Accurate MAGPRO | 69.4 gr | 92% | 48,820 psi | 75% | 2936 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,560 psi | 78% | 2822 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,248 psi | 62% | 2707 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 90% | 44,034 psi | 68% | 2818 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 35,012 psi | 54% | 2654 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,343 psi | 79% | 2844 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,708 psi | 84% | 2917 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,553 psi | 62% | 2736 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,601 psi | 72% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,277 psi | 62% | 2703 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,203 psi | 59% | 2697 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,704 psi | 46% | 2480 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,705 psi | 49% | 2556 fps | 96% |
| Alliant Reloder-26 | 61 gr | 80% | 32,155 psi | 49% | 2605 fps | 97% |
| Bofors RP15 | <<locked>> | 90% | 40,292 psi | 62% | 2743 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 52,098 psi | 80% | 2861 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,163 psi | 66% | 2838 fps | 95.9% |
| Bofors RP5 | <<locked>> | 86% | 38,203 psi | 59% | 2697 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 45,295 psi | 70% | 2736 fps | 98% |
| Hodgdon H1000 | <<locked>> | 96% | 43,178 psi | 66% | 2795 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 52,301 psi | 80% | 2877 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,830 psi | 67% | 2776 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 46,731 psi | 72% | 2799 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 47,108 psi | 72% | 2825 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,224 psi | 71% | 2808 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,043 psi | 59% | 2621 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,724 psi | 58% | 2762 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 43,091 psi | 66% | 2792 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 42% | 1650 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,214 psi | 82% | 2854 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,828 psi | 63% | 2664 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,862 psi | 72% | 2769 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 40,089 psi | 62% | 2674 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,919 psi | 71% | 2769 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 45,136 psi | 69% | 2854 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 53,403 psi | 82% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,164 psi | 68% | 2713 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 42,395 psi | 65% | 2697 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 32,213 psi | 50% | 2487 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 54,041 psi | 83% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,640 psi | 63% | 2694 fps | 95.5% |
| Norma MRP | 60.7 gr | 82% | 34,679 psi | 53% | 2638 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,379 psi | 64% | 2717 fps | 99.4% |
| Ramshot Grand | <<locked>> | 90% | 41,814 psi | 64% | 2795 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 40,335 psi | 62% | 2707 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 37,275 psi | 57% | 2671 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,992 psi | 43% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,054 psi | 80% | 2861 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,516 psi | 76% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,727 psi | 64% | 2743 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,263 psi | 62% | 2756 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,534 psi | 53% | 2671 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 55,085 psi | 85% | 2858 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,878 psi | 75% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,585 psi | 69% | 2749 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 39,334 psi | 61% | 2684 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,295 psi | 70% | 2736 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,164 psi | 68% | 2713 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 53,403 psi | 82% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,395 psi | 65% | 2697 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,473 psi | 78% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,777 psi | 77% | 2697 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,279 psi | 67% | 2661 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,986 psi | 60% | 2680 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 48,965 psi | 75% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,701 psi | 70% | 2740 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 38,072 psi | 59% | 2667 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,304 psi | 57% | 2608 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 46,833 psi | 72% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,815 psi | 66% | 2713 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,898 psi | 57% | 2592 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 54,114 psi | 83% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,293 psi | 65% | 2717 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,127 psi | 51% | 2556 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 90% | 46,456 psi | 71% | 2890 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 45,890 psi | 71% | 2864 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,061 psi | 65% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,019 psi | 68% | 2779 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,208 psi | 40% | 2464 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,305 psi | 60% | 2651 fps | 95.3% |
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 91 powders for 7 mm PRC loaded with the .284 | 150gr | Hornady ECX. Winchester StaBALL HD delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,847 fps to 3,117 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 150.0 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-23 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 MAGPRO, Alliant Reloder-26, Norma MRP rank at the top here: for 7 mm PRC with the .284 | 150gr | Hornady ECX 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.