Load Specifications
Bullet:.284 | 120gr | Hornady SP
Bullet Manufacturer:Hornady
Bullet Weight:120 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:1:14.0
Load data in caliber 7 mm PRC with .284 | 120gr | Hornady SP bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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>> | 84% | 57,101 psi | 88% | 3143 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 58,668 psi | 90% | 3209 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,547 psi | 81% | 3176 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 57,421 psi | 88% | 3199 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,392 psi | 90% | 3307 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,522 psi | 88% | 3392 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 82% | 56,420 psi | 87% | 3228 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,537 psi | 89% | 3232 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,782 psi | 86% | 3281 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,610 psi | 90% | 3228 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,014 psi | 88% | 3366 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,811 psi | 86% | 3278 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,305 psi | 90% | 3258 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,581 psi | 90% | 3281 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,317 psi | 85% | 3307 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,724 psi | 87% | 3337 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 58,682 psi | 90% | 3330 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 3258 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,342 psi | 76% | 3199 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,917 psi | 66% | 3091 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3415 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,405 psi | 87% | 3241 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,695 psi | 86% | 3215 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 3258 fps | 96.5% |
| Bofors RP7 | <<locked>> | 92% | 58,740 psi | 90% | 3251 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 86% | 56,014 psi | 86% | 3228 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 56,884 psi | 88% | 3297 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 56,710 psi | 87% | 3255 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 57,043 psi | 88% | 3238 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,550 psi | 85% | 3225 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,493 psi | 88% | 3278 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,464 psi | 88% | 3337 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 56% | 2047 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,073 psi | 89% | 3241 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,595 psi | 89% | 3219 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,927 psi | 88% | 3212 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,289 psi | 87% | 3192 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 56,188 psi | 86% | 3225 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,811 psi | 87% | 3225 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 58,740 psi | 90% | 3294 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,478 psi | 87% | 3255 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 58,610 psi | 90% | 3228 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,724 psi | 87% | 3196 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,668 psi | 90% | 3202 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,029 psi | 88% | 3205 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,942 psi | 88% | 3219 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 58,233 psi | 90% | 3261 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,439 psi | 67% | 3002 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 58,610 psi | 90% | 3225 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,666 psi | 86% | 3166 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,870 psi | 89% | 3264 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,029 psi | 88% | 3278 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 55,622 psi | 86% | 3356 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 56,956 psi | 88% | 3287 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,143 psi | 85% | 3232 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,767 psi | 86% | 3281 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 58,726 psi | 90% | 3248 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 57% | 2093 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,144 psi | 86% | 3212 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,014 psi | 86% | 3297 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,130 psi | 86% | 3330 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,320 psi | 90% | 3323 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,985 psi | 88% | 3356 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 55,564 psi | 85% | 3166 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,840 psi | 86% | 3215 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,522 psi | 88% | 3248 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,044 psi | 89% | 3317 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 58,740 psi | 90% | 3251 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,942 psi | 88% | 3219 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,724 psi | 87% | 3196 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,029 psi | 88% | 3205 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,233 psi | 90% | 3261 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,464 psi | 88% | 3274 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,740 psi | 89% | 3228 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,392 psi | 90% | 3251 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,840 psi | 86% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,739 psi | 87% | 3094 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,666 psi | 87% | 3163 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,537 psi | 89% | 3310 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 55,579 psi | 86% | 3094 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,363 psi | 88% | 3215 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,709 psi | 86% | 3209 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,217 psi | 86% | 3291 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,726 psi | 90% | 3287 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 82% | 56,347 psi | 87% | 3081 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,840 psi | 86% | 3127 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,231 psi | 87% | 3140 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,159 psi | 88% | 3182 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,463 psi | 85% | 3225 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,647 psi | 78% | 3130 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 58,059 psi | 89% | 3186 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,407 psi | 90% | 3287 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,071 psi | 85% | 3287 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,405 psi | 85% | 3189 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,159 psi | 88% | 3304 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,469 psi | 68% | 3241 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 58,668 psi | 90% | 3258 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,143 psi | 85% | 3215 fps | 96.8% |
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% | 50,067 psi | 77% | 3035 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,979 psi | 74% | 3015 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 39,784 psi | 61% | 2920 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 47,384 psi | 73% | 3035 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,824 psi | 55% | 2851 fps | 96.1% |
| Accurate High Country | <<locked>> | 98% | 53,534 psi | 82% | 3317 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 52,736 psi | 81% | 3166 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,730 psi | 69% | 2995 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 48,936 psi | 75% | 3150 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,810 psi | 84% | 3169 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,516 psi | 76% | 3228 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 48,834 psi | 75% | 3146 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,223 psi | 70% | 3025 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,283 psi | 74% | 3097 fps | 99.5% |
| Alliant Reloder-16 | 55.6 gr | 80% | 35,056 psi | 54% | 2861 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,769 psi | 61% | 3005 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,211 psi | 74% | 3136 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,675 psi | 75% | 3189 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,269 psi | 45% | 2700 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,826 psi | 58% | 2959 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 36,535 psi | 56% | 2972 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,779 psi | 81% | 3179 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 45,411 psi | 70% | 3031 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 48,675 psi | 75% | 3189 fps | 95.6% |
| Bofors RP7 | <<locked>> | 84% | 45,658 psi | 70% | 3005 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,021 psi | 71% | 3041 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 43,352 psi | 67% | 3031 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 84% | 46,528 psi | 72% | 3061 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,359 psi | 82% | 3179 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,677 psi | 50% | 2753 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,111 psi | 77% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,772 psi | 66% | 3045 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 41% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,952 psi | 78% | 3120 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,896 psi | 83% | 3166 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,021 psi | 72% | 3035 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,530 psi | 76% | 3064 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 43,569 psi | 67% | 2979 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,353 psi | 68% | 2982 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 34,664 psi | 53% | 2802 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 49,545 psi | 76% | 3133 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 54,810 psi | 84% | 3169 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,200 psi | 82% | 3143 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,866 psi | 80% | 3091 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 47,413 psi | 73% | 3038 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,102 psi | 60% | 2861 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 42,366 psi | 65% | 2953 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 38,101 psi | 59% | 2881 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,677 psi | 80% | 3110 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,272 psi | 80% | 3110 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,674 psi | 73% | 3084 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,835 psi | 77% | 3143 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 42,018 psi | 65% | 3074 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,766 psi | 55% | 2848 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 48,109 psi | 74% | 3107 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 39,726 psi | 61% | 2956 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 55,085 psi | 85% | 3186 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 42% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,977 psi | 71% | 3018 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,199 psi | 80% | 3232 fps | 99.8% |
| ReloadSwiss RS 60 | 59.9 gr | 80% | 42,279 psi | 65% | 3074 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,737 psi | 55% | 2867 fps | 95.7% |
| ReloadSwiss RS 70 | 62.4 gr | 82% | 37,405 psi | 58% | 2936 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 49,226 psi | 76% | 3058 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,772 psi | 66% | 2972 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 53,925 psi | 83% | 3186 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 47,311 psi | 73% | 3117 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 45,658 psi | 70% | 3005 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,102 psi | 60% | 2861 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,200 psi | 82% | 3143 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,413 psi | 73% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 42,366 psi | 65% | 2953 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,961 psi | 68% | 3028 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,925 psi | 83% | 3166 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,343 psi | 79% | 3130 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,359 psi | 81% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,193 psi | 68% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,930 psi | 63% | 2861 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,876 psi | 72% | 3110 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 52,243 psi | 80% | 3041 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,679 psi | 83% | 3156 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,221 psi | 66% | 2976 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 32,227 psi | 50% | 2795 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 44,991 psi | 69% | 3035 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 52,895 psi | 81% | 3028 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,182 psi | 76% | 3025 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,545 psi | 76% | 3035 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,234 psi | 63% | 2897 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,115 psi | 57% | 2851 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 47,398 psi | 73% | 3068 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,022 psi | 74% | 3025 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,753 psi | 57% | 2851 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 32,169 psi | 49% | 2785 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,593 psi | 56% | 2822 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 43,555 psi | 67% | 3038 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,602 psi | 46% | 2799 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,300 psi | 79% | 3136 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,877 psi | 74% | 3084 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 | 120gr | Hornady SP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,415 fps; across all powders the maximum-charge window runs from 2,047 fps to 3,415 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 120.0 gr projectile in 0.284" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-19 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 7 mm PRC with the .284 | 120gr | Hornady SP 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.