Load Specifications
Load data in caliber 7-6.5 PRCW with .284 | 130gr | Speer Hot-Cor 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-17, ReloadSwiss RS 60 and Hodgdon H414.
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
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 58,436 psi | 90% | 2963 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,638 psi | 89% | 2986 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,361 psi | 85% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,391 psi | 87% | 2989 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,831 psi | 69% | 2881 fps | 96.7% |
| Accurate 4064 | <<locked>> | 90% | 57,725 psi | 89% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 58,175 psi | 90% | 3136 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 57,667 psi | 89% | 3074 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 58,784 psi | 90% | 3074 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,492 psi | 87% | 3022 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,653 psi | 89% | 2989 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,653 psi | 89% | 3199 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,463 psi | 85% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,985 psi | 86% | 3064 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 58,755 psi | 90% | 3189 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,536 psi | 87% | 3169 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,453 psi | 65% | 2910 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,979 psi | 74% | 3091 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,595 psi | 89% | 3087 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 56,318 psi | 87% | 3061 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,927 psi | 86% | 3025 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,914 psi | 89% | 2999 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,260 psi | 87% | 3051 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 58,291 psi | 90% | 3156 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,188 psi | 88% | 3074 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 56,985 psi | 88% | 3127 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 57,276 psi | 88% | 3087 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 86% | 58,262 psi | 90% | 3084 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,158 psi | 85% | 3054 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 58,015 psi | 89% | 3117 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,841 psi | 89% | 3169 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 55% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,767 psi | 86% | 3031 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 58,421 psi | 90% | 3061 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 58,175 psi | 90% | 3054 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,885 psi | 89% | 3035 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 56,579 psi | 87% | 3054 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,812 psi | 89% | 3061 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 58,421 psi | 90% | 3120 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 57,435 psi | 88% | 3097 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,492 psi | 87% | 3022 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,638 psi | 89% | 3045 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,840 psi | 87% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 58,059 psi | 89% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,319 psi | 88% | 3051 fps | 99.1% |
| Lovex S070 | <<locked>> | 98% | 58,392 psi | 90% | 3087 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 56,130 psi | 86% | 3012 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,811 psi | 87% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 90% | 58,784 psi | 90% | 3107 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,363 psi | 88% | 3107 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 47,601 psi | 73% | 3041 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 56,637 psi | 87% | 3114 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,767 psi | 86% | 3074 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,550 psi | 85% | 3110 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 56,681 psi | 87% | 3038 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,449 psi | 87% | 3054 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,246 psi | 88% | 3018 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 56% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,319 psi | 88% | 3054 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,753 psi | 87% | 3136 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,347 psi | 87% | 3173 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,856 psi | 89% | 3153 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,956 psi | 88% | 3186 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 56,985 psi | 88% | 2992 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,884 psi | 88% | 3012 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,188 psi | 86% | 3051 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,927 psi | 86% | 3025 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,319 psi | 88% | 3051 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,638 psi | 89% | 3045 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 58,059 psi | 89% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 58,392 psi | 90% | 3087 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,957 psi | 89% | 3114 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,187 psi | 85% | 3015 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,173 psi | 86% | 3041 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,667 psi | 89% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 58,146 psi | 89% | 2946 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,725 psi | 89% | 3005 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 57,783 psi | 89% | 3051 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,869 psi | 88% | 2940 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 58,740 psi | 90% | 3061 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,318 psi | 87% | 3048 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,216 psi | 85% | 3120 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,865 psi | 78% | 2989 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 57,174 psi | 88% | 2907 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,957 psi | 89% | 2930 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,782 psi | 87% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,479 psi | 88% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,899 psi | 89% | 3025 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,680 psi | 86% | 3058 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 56,913 psi | 88% | 3018 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,579 psi | 86% | 2982 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 58,479 psi | 90% | 3120 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,963 psi | 72% | 2992 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,825 psi | 86% | 3031 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,159 psi | 88% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,305 psi | 88% | 3133 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,218 psi | 59% | 2923 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,101 psi | 86% | 3048 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 51,648 psi | 79% | 2864 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,396 psi | 68% | 2785 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,895 psi | 80% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,209 psi | 71% | 2812 fps | 95% |
| Accurate 3100 | <<locked>> | 96% | 39,044 psi | 60% | 2762 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 42,003 psi | 65% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,839 psi | 55% | 2713 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 47,732 psi | 73% | 2907 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 40,379 psi | 62% | 2740 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,835 psi | 77% | 2913 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,618 psi | 78% | 2890 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,685 psi | 67% | 2940 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,437 psi | 62% | 2769 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,395 psi | 67% | 2838 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,447 psi | 55% | 2720 fps | 95.8% |
| Alliant Reloder-17 | 50.5 gr | 80% | 34,983 psi | 54% | 2733 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,995 psi | 48% | 2618 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,955 psi | 55% | 2808 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,050 psi | 72% | 2907 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 40,292 psi | 62% | 2776 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 46,441 psi | 71% | 2854 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,184 psi | 79% | 2894 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,008 psi | 75% | 2933 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 54,317 psi | 84% | 3094 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 40,959 psi | 63% | 2776 fps | 96.9% |
| Hodgdon H414 | 54.4 gr | 88% | 43,729 psi | 67% | 2887 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 90% | 50,488 psi | 78% | 2969 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 48,254 psi | 74% | 2917 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,661 psi | 47% | 2552 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,309 psi | 68% | 2887 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 46,586 psi | 72% | 2969 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 41% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,079 psi | 71% | 2864 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 48,037 psi | 74% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,424 psi | 65% | 2776 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,889 psi | 69% | 2799 fps | 95.5% |
| IMR 4350 | <<locked>> | 92% | 46,862 psi | 72% | 2884 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,121 psi | 69% | 2831 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 34,490 psi | 53% | 2661 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 44,483 psi | 68% | 2871 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,835 psi | 77% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,152 psi | 73% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,181 psi | 73% | 2831 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,438 psi | 65% | 2782 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,755 psi | 61% | 2723 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 42,844 psi | 66% | 2808 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 46,601 psi | 72% | 2851 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 47,137 psi | 73% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,772 psi | 66% | 2825 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 53,708 psi | 83% | 3048 fps | 95.8% |
| Norma MRP | <<locked>> | 98% | 44,556 psi | 69% | 2976 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 35,824 psi | 55% | 2710 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 42,438 psi | 65% | 2838 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,900 psi | 61% | 2808 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,632 psi | 76% | 2917 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,574 psi | 76% | 2943 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,577 psi | 82% | 2963 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 41% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,263 psi | 64% | 2759 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,934 psi | 71% | 2946 fps | 98.9% |
| ReloadSwiss RS 60 | 50.5 gr | 80% | 37,202 psi | 57% | 2805 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,520 psi | 55% | 2726 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 37,681 psi | 58% | 2789 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,560 psi | 78% | 2890 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,324 psi | 68% | 2799 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,797 psi | 58% | 2713 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 46,441 psi | 71% | 2854 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,755 psi | 61% | 2723 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,152 psi | 73% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,438 psi | 65% | 2782 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,844 psi | 66% | 2808 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,798 psi | 60% | 2762 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,327 psi | 74% | 2897 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,064 psi | 71% | 2867 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,674 psi | 73% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,885 psi | 61% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,570 psi | 69% | 2776 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 54,027 psi | 83% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,456 psi | 73% | 2799 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,863 psi | 74% | 2887 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 38,508 psi | 59% | 2720 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 28,195 psi | 43% | 2539 fps | 96.1% |
| Somchem S385 | <<locked>> | 98% | 47,659 psi | 73% | 2930 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,635 psi | 83% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,080 psi | 74% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,019 psi | 68% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,527 psi | 69% | 2785 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,622 psi | 56% | 2648 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 35,085 psi | 54% | 2657 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 49,980 psi | 77% | 2907 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,033 psi | 66% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,970 psi | 57% | 2713 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 90% | 33,649 psi | 52% | 2700 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,430 psi | 50% | 2569 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 49,966 psi | 77% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,729 psi | 67% | 2887 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,327 psi | 45% | 2638 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,861 psi | 71% | 2877 fps | 99.6% |
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 117 powders for 7-6.5 PRCW loaded with the .284 | 130gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,199 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 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 130.0 gr projectile in 0.284" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for 7-6.5 PRCW with the .284 | 130gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.