Load Specifications
Load data in caliber 7 mm PRC with .284 | 120gr | Barnes TTSX BT bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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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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% | 55,579 psi | 86% | 3130 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 58,015 psi | 89% | 3205 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,358 psi | 79% | 3159 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 56,014 psi | 86% | 3186 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,392 psi | 88% | 3297 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 55,564 psi | 85% | 3222 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,043 psi | 88% | 3228 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,056 psi | 85% | 3274 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,841 psi | 89% | 3222 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,449 psi | 87% | 3360 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,595 psi | 89% | 3251 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,914 psi | 89% | 3278 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 58,407 psi | 90% | 3366 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,028 psi | 86% | 3333 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 3323 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 3248 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,457 psi | 75% | 3189 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,293 psi | 65% | 3081 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,086 psi | 86% | 3402 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,782 psi | 86% | 3235 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 58,523 psi | 90% | 3268 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,430 psi | 79% | 3248 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 58,059 psi | 89% | 3248 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,899 psi | 89% | 3251 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 55,259 psi | 85% | 3222 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 56,130 psi | 86% | 3291 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 56,101 psi | 86% | 3251 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 56,188 psi | 86% | 3235 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 58,639 psi | 90% | 3274 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,579 psi | 87% | 3268 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,985 psi | 88% | 3333 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 55% | 2047 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,319 psi | 88% | 3235 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,710 psi | 87% | 3212 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,376 psi | 87% | 3212 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,550 psi | 85% | 3186 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 55,550 psi | 85% | 3219 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,260 psi | 87% | 3219 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 57,885 psi | 89% | 3284 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,579 psi | 86% | 3248 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,841 psi | 89% | 3222 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,854 psi | 86% | 3192 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,943 psi | 89% | 3199 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,304 psi | 87% | 3199 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,883 psi | 86% | 3212 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 57,406 psi | 88% | 3255 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,322 psi | 65% | 2982 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 57,580 psi | 89% | 3215 fps | 100% |
| Norma 202 | <<locked>> | 84% | 58,392 psi | 90% | 3212 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,174 psi | 88% | 3261 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,333 psi | 87% | 3271 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 54,955 psi | 85% | 3350 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 56,188 psi | 86% | 3281 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 58,320 psi | 90% | 3287 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,042 psi | 85% | 3274 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 58,160 psi | 89% | 3245 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 58,204 psi | 90% | 3261 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,550 psi | 56% | 2096 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,477 psi | 85% | 3205 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,085 psi | 85% | 3287 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,492 psi | 85% | 3327 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,682 psi | 89% | 3323 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,231 psi | 87% | 3350 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 57,972 psi | 89% | 3189 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 58,407 psi | 90% | 3219 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 58,363 psi | 90% | 3261 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,855 psi | 87% | 3245 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,203 psi | 88% | 3307 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 58,059 psi | 89% | 3248 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,883 psi | 86% | 3212 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,854 psi | 86% | 3192 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,304 psi | 87% | 3199 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,406 psi | 88% | 3255 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,768 psi | 87% | 3271 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,956 psi | 88% | 3225 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,783 psi | 89% | 3248 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,537 psi | 90% | 3146 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,202 psi | 86% | 3094 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,883 psi | 86% | 3159 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,724 psi | 87% | 3301 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 58,175 psi | 89% | 3136 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,724 psi | 87% | 3209 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 58,291 psi | 90% | 3255 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,390 psi | 85% | 3284 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 3278 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 55,637 psi | 86% | 3077 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 58,624 psi | 90% | 3173 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,651 psi | 86% | 3136 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,202 psi | 86% | 3173 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 58,450 psi | 90% | 3278 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,806 psi | 77% | 3120 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 58,291 psi | 90% | 3219 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 57,421 psi | 88% | 3182 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,566 psi | 89% | 3281 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,041 psi | 83% | 3274 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,665 psi | 84% | 3182 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,391 psi | 87% | 3297 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,729 psi | 67% | 3228 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 58,015 psi | 89% | 3255 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,534 psi | 84% | 3212 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% | 48,631 psi | 75% | 3022 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,369 psi | 73% | 3012 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 38,725 psi | 60% | 2900 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,050 psi | 71% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,853 psi | 54% | 2831 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,141 psi | 80% | 3163 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,222 psi | 68% | 2992 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 48,254 psi | 74% | 3143 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,317 psi | 84% | 3166 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,675 psi | 75% | 3215 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,367 psi | 68% | 3015 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,616 psi | 73% | 3094 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,447 psi | 53% | 2851 fps | 95.8% |
| Alliant Reloder-17 | 60.4 gr | 80% | 39,059 psi | 60% | 2995 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,514 psi | 73% | 3127 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,095 psi | 74% | 3182 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,269 psi | 47% | 2743 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,985 psi | 57% | 2940 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,578 psi | 55% | 2949 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,953 psi | 80% | 3169 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,498 psi | 68% | 3022 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 48,095 psi | 74% | 3182 fps | 95.5% |
| Bofors RP7 | <<locked>> | 84% | 44,744 psi | 69% | 2995 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,114 psi | 83% | 3189 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,063 psi | 69% | 3031 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 42,627 psi | 66% | 3025 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 45,963 psi | 71% | 3054 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 52,750 psi | 81% | 3176 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,821 psi | 49% | 2733 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,255 psi | 76% | 3143 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 45,295 psi | 70% | 3110 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 41% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,459 psi | 78% | 3117 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,055 psi | 82% | 3156 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,485 psi | 72% | 3031 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,776 psi | 75% | 3058 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 45,745 psi | 70% | 3031 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,627 psi | 67% | 2972 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,678 psi | 52% | 2782 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 48,892 psi | 75% | 3127 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 54,317 psi | 84% | 3166 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,112 psi | 80% | 3133 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,184 psi | 79% | 3084 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,485 psi | 72% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,203 psi | 59% | 2848 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 41,597 psi | 64% | 2946 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,682 psi | 61% | 2923 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,676 psi | 78% | 3100 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,401 psi | 79% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,978 psi | 72% | 3077 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 49,124 psi | 76% | 3136 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 44,237 psi | 68% | 3133 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 34,882 psi | 54% | 2831 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 47,253 psi | 73% | 3097 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 39,015 psi | 60% | 2946 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 54,505 psi | 84% | 3182 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,447 psi | 84% | 3202 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 42% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,310 psi | 70% | 3012 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,271 psi | 79% | 3222 fps | 99.7% |
| ReloadSwiss RS 60 | 60.4 gr | 80% | 41,611 psi | 64% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,708 psi | 53% | 2844 fps | 95.3% |
| ReloadSwiss RS 70 | 62.8 gr | 82% | 36,535 psi | 56% | 2920 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 54,694 psi | 84% | 3140 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,240 psi | 74% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,698 psi | 64% | 2956 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 96% | 53,229 psi | 82% | 3182 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 46,514 psi | 72% | 3107 fps | 95% |
| Rottweil R 907 | <<locked>> | 84% | 44,744 psi | 69% | 2995 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,203 psi | 59% | 2848 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,112 psi | 80% | 3133 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,485 psi | 72% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,597 psi | 64% | 2946 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,091 psi | 66% | 3015 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,924 psi | 81% | 3153 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,546 psi | 78% | 3123 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,605 psi | 79% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,468 psi | 67% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,888 psi | 66% | 2910 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 49,284 psi | 76% | 3166 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,401 psi | 79% | 3035 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,808 psi | 81% | 3146 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,264 psi | 65% | 2963 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,270 psi | 48% | 2776 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 44,092 psi | 68% | 3022 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 52,170 psi | 80% | 3025 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,283 psi | 74% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,747 psi | 75% | 3028 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,321 psi | 62% | 2887 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,434 psi | 56% | 2841 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 46,601 psi | 72% | 3058 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 54,636 psi | 84% | 3163 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 47,166 psi | 73% | 3015 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,824 psi | 55% | 2835 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 33,518 psi | 52% | 2831 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,737 psi | 55% | 2808 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 42,844 psi | 66% | 3028 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,703 psi | 44% | 2766 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,647 psi | 78% | 3133 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,662 psi | 78% | 3143 fps | 95.9% |
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 115 powders for 7 mm PRC loaded with the .284 | 120gr | Barnes TTSX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,402 fps; across all powders the maximum-charge window runs from 2,047 fps to 3,402 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:11.0 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7 mm PRC with the .284 | 120gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 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.