Load Specifications
Bullet:.284 | 145gr | Barnes LRX BT
Bullet Manufacturer:Barnes
Bullet Weight:145 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm PRC load data
Case Length (l3):2.28"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:82 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:9.5
Load data in caliber 7 mm PRC with .284 | 145gr | Barnes LRX BT bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 55,941 psi | 86% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,667 psi | 89% | 2940 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,709 psi | 86% | 2979 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 56,492 psi | 87% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,030 psi | 89% | 3035 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 57,522 psi | 88% | 3136 fps | 98.1% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 58,682 psi | 90% | 3136 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 86% | 56,956 psi | 88% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,317 psi | 85% | 3025 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,840 psi | 87% | 3081 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,695 psi | 87% | 3084 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,550 psi | 85% | 3022 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,667 psi | 89% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,899 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,230 psi | 85% | 3038 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,579 psi | 87% | 3061 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,378 psi | 90% | 3071 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,869 psi | 86% | 3074 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,750 psi | 81% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,643 psi | 70% | 2923 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,884 psi | 88% | 3146 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,981 psi | 78% | 2989 fps | 97.7% |
| Bofors RP3 | <<locked>> | 86% | 58,740 psi | 90% | 2992 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,869 psi | 86% | 3074 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 57,841 psi | 89% | 2982 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 55,187 psi | 85% | 2956 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,434 psi | 87% | 3031 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 55,956 psi | 86% | 2989 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 98% | 56,768 psi | 87% | 3018 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,637 psi | 86% | 3002 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,521 psi | 85% | 2959 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,710 psi | 87% | 2992 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,643 psi | 69% | 2956 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 90% | 57,029 psi | 88% | 3071 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 56% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,290 psi | 88% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,101 psi | 86% | 2933 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,259 psi | 85% | 2920 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 55,434 psi | 85% | 2959 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,130 psi | 86% | 2956 fps | 99.4% |
| IMR 4831 | <<locked>> | 94% | 58,320 psi | 90% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,811 psi | 86% | 2976 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,175 psi | 89% | 3005 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,983 psi | 83% | 3048 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 57,725 psi | 89% | 2920 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,420 psi | 87% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,043 psi | 86% | 2949 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 57,522 psi | 88% | 2995 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,180 psi | 71% | 2825 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 57,638 psi | 89% | 2936 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,552 psi | 90% | 2933 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,145 psi | 88% | 2982 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,492 psi | 87% | 3018 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 55,593 psi | 86% | 3100 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 56,521 psi | 87% | 3018 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 58,363 psi | 90% | 3015 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,679 psi | 84% | 3068 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 55,463 psi | 85% | 3018 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,776 psi | 75% | 2933 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,144 psi | 57% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,288 psi | 85% | 2943 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,028 psi | 86% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,943 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,536 psi | 87% | 3091 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,773 psi | 69% | 2953 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 84% | 58,320 psi | 90% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,595 psi | 90% | 2986 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,116 psi | 88% | 2995 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 98% | 57,638 psi | 89% | 3058 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 57,841 psi | 89% | 2982 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,043 psi | 86% | 2949 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,420 psi | 87% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,522 psi | 88% | 2995 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,753 psi | 87% | 2995 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,711 psi | 89% | 2969 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,421 psi | 90% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,970 psi | 86% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,840 psi | 86% | 2904 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,145 psi | 88% | 3051 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 58,059 psi | 89% | 2858 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,523 psi | 90% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,969 psi | 85% | 2927 fps | 96.6% |
| Somchem S365 | <<locked>> | 94% | 56,231 psi | 87% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,160 psi | 89% | 3028 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 84% | 58,711 psi | 90% | 2890 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,622 psi | 86% | 2861 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,202 psi | 86% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,940 psi | 85% | 2956 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,737 psi | 83% | 2943 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 57,188 psi | 88% | 2904 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,725 psi | 89% | 3015 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 58,726 psi | 90% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,811 psi | 86% | 3091 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 58,798 psi | 90% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,666 psi | 87% | 3035 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,109 psi | 74% | 3061 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,044 psi | 89% | 2979 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,784 psi | 90% | 3028 fps | 98.8% |
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 2495 | <<locked>> | 80% | 52,170 psi | 80% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,459 psi | 78% | 2825 fps | 98.2% |
| Accurate 3100 | <<locked>> | 86% | 34,127 psi | 53% | 2569 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 49,487 psi | 76% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,956 psi | 58% | 2674 fps | 98.4% |
| Accurate High Country | <<locked>> | 92% | 46,456 psi | 71% | 2940 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 96% | 50,589 psi | 78% | 3002 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 46,992 psi | 72% | 2792 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,395 psi | 65% | 2782 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 94% | 46,180 psi | 71% | 2884 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,547 psi | 81% | 3018 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 42,525 psi | 65% | 2782 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,514 psi | 73% | 2815 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,836 psi | 78% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,086 psi | 57% | 2690 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,221 psi | 65% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,032 psi | 65% | 2772 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,279 psi | 65% | 2822 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,934 psi | 41% | 2425 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,837 psi | 51% | 2615 fps | 95.6% |
| Alliant Reloder-26 | 59.2 gr | 82% | 31,082 psi | 48% | 2605 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 41,684 psi | 64% | 2808 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 47,906 psi | 74% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,279 psi | 65% | 2822 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 42,003 psi | 65% | 2697 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 48,341 psi | 74% | 2841 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 40,132 psi | 62% | 2730 fps | 96.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,134 psi | 66% | 2753 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 94% | 49,501 psi | 76% | 2894 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,501 psi | 75% | 2877 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,664 psi | 53% | 2579 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,968 psi | 81% | 2936 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,829 psi | 64% | 2890 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 39,247 psi | 60% | 2740 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 42% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,548 psi | 82% | 2900 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,429 psi | 76% | 2825 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,706 psi | 80% | 2861 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 37,710 psi | 58% | 2618 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,656 psi | 67% | 2730 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 36,608 psi | 56% | 2631 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 52,156 psi | 80% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,051 psi | 74% | 2835 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 47,050 psi | 72% | 2917 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 54,317 psi | 84% | 2867 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,777 psi | 77% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,828 psi | 63% | 2674 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 39,088 psi | 60% | 2654 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 33,054 psi | 51% | 2543 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 53,882 psi | 83% | 2884 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,752 psi | 84% | 2881 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,183 psi | 77% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,714 psi | 66% | 2769 fps | 95.4% |
| Norma MRP | 60.3 gr | 86% | 36,172 psi | 56% | 2710 fps | 95% |
| Norma URP | <<locked>> | 80% | 37,826 psi | 58% | 2671 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 50,763 psi | 78% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,123 psi | 72% | 2930 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,840 psi | 57% | 2661 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 38,827 psi | 60% | 2730 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,414 psi | 74% | 2828 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,947 psi | 69% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,942 psi | 58% | 2697 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,767 psi | 57% | 2703 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,696 psi | 60% | 2805 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,430 psi | 79% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,962 psi | 69% | 2769 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,920 psi | 72% | 2822 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 88% | 40,988 psi | 63% | 2753 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 42,003 psi | 65% | 2697 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,828 psi | 63% | 2674 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 49,777 psi | 77% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,088 psi | 60% | 2654 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,514 psi | 72% | 2831 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,070 psi | 83% | 2917 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,810 psi | 84% | 2815 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,398 psi | 71% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,972 psi | 61% | 2615 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,611 psi | 62% | 2746 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 54,375 psi | 84% | 2808 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,252 psi | 70% | 2769 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,430 psi | 79% | 2867 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 34,301 psi | 53% | 2625 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,986 psi | 60% | 2677 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 51,851 psi | 80% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,982 psi | 80% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,279 psi | 67% | 2697 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,320 psi | 60% | 2674 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 41,147 psi | 63% | 2717 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 50,328 psi | 77% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,754 psi | 60% | 2674 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 80% | 29,878 psi | 46% | 2507 fps | 96.3% |
| Vihtavuori N560 | 65.9 gr | 94% | 48,486 psi | 75% | 2959 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,493 psi | 59% | 2644 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 40,321 psi | 62% | 2733 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,469 psi | 39% | 2457 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,027 psi | 83% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,118 psi | 63% | 2720 fps | 95.1% |
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 98 powders for 7 mm PRC loaded with the .284 | 145gr | Barnes LRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,146 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm PRC with the .284 | 145gr | Barnes LRX BT 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.