Load Specifications
Bullet:.284 | 155gr | Geco EXPRESS
Bullet Manufacturer:Geco
Bullet Weight:155 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7-6.5 PRCW load data
Case Length (l3):2.03"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:68 Grains of Water
Primer Size:Large Rifle (LR)
Max. allowed Pressure:64,977 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7-6.5 PRCW with .284 | 155gr | Geco EXPRESS bullet and 107 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-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 86% | 58,595 psi | 90% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,579 psi | 87% | 2756 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,676 psi | 76% | 2736 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 55,230 psi | 85% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,796 psi | 86% | 2848 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 58,233 psi | 90% | 2822 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,811 psi | 86% | 2776 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,956 psi | 88% | 2887 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,739 psi | 87% | 2766 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 58,668 psi | 90% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 58,653 psi | 90% | 2953 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,797 psi | 87% | 2881 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,246 psi | 87% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,652 psi | 87% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,492 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,957 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,941 psi | 86% | 2874 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,400 psi | 76% | 2812 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,514 psi | 72% | 2756 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,901 psi | 63% | 2674 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,316 psi | 82% | 2946 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 58,146 psi | 89% | 2841 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,203 psi | 88% | 2815 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,400 psi | 76% | 2812 fps | 97% |
| Bofors RP7 | <<locked>> | 92% | 56,782 psi | 87% | 2799 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,059 psi | 89% | 2743 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,826 psi | 87% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,624 psi | 89% | 2831 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 58,262 psi | 90% | 2897 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 58,102 psi | 89% | 2858 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 82% | 55,172 psi | 85% | 2779 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,608 psi | 87% | 2822 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,216 psi | 85% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 58,653 psi | 90% | 2940 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 56% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,246 psi | 87% | 2782 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,637 psi | 86% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,332 psi | 85% | 2759 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,160 psi | 90% | 2795 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 57,334 psi | 88% | 2828 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,378 psi | 90% | 2825 fps | 99.3% |
| IMR 4831 | <<locked>> | 96% | 55,912 psi | 86% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 58,146 psi | 89% | 2848 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,478 psi | 87% | 2815 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 82% | 56,739 psi | 87% | 2766 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 58,523 psi | 90% | 2792 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,145 psi | 88% | 2746 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,434 psi | 85% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,218 psi | 90% | 2818 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 55,985 psi | 86% | 2808 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,263 psi | 64% | 2592 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 56,768 psi | 87% | 2762 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,537 psi | 89% | 2759 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,927 psi | 86% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 96% | 58,349 psi | 90% | 2884 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 52,460 psi | 81% | 2897 fps | 98.8% |
| Norma URP | <<locked>> | 96% | 58,030 psi | 89% | 2881 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,681 psi | 87% | 2835 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,869 psi | 88% | 2884 fps | 99.7% |
| Ramshot TAC | <<locked>> | 82% | 56,985 psi | 88% | 2795 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,913 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 57% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,841 psi | 89% | 2818 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,609 psi | 89% | 2887 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,508 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,347 psi | 85% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 58,146 psi | 89% | 2953 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,740 psi | 89% | 2740 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,319 psi | 88% | 2762 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,087 psi | 88% | 2808 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,726 psi | 90% | 2854 fps | 97.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,897 psi | 84% | 2854 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 56,782 psi | 87% | 2799 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,218 psi | 90% | 2818 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 58,523 psi | 90% | 2792 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,434 psi | 85% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,985 psi | 86% | 2808 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,216 psi | 85% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,695 psi | 86% | 2776 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,449 psi | 87% | 2792 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,957 psi | 89% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,552 psi | 90% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 58,363 psi | 90% | 2776 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,404 psi | 84% | 2848 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 57,334 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,477 psi | 85% | 2762 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,232 psi | 88% | 2805 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 57,000 psi | 88% | 2795 fps | 96.2% |
| Somchem S365 | <<locked>> | 98% | 56,811 psi | 87% | 2881 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,724 psi | 86% | 2831 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 58,378 psi | 90% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,566 psi | 89% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,160 psi | 90% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 58,769 psi | 90% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,840 psi | 87% | 2825 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,109 psi | 74% | 2700 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 82% | 57,246 psi | 88% | 2762 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,304 psi | 87% | 2740 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,695 psi | 86% | 2828 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,257 psi | 80% | 2835 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,011 psi | 82% | 2884 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,391 psi | 87% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,943 psi | 89% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 58,262 psi | 90% | 2897 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,858 psi | 64% | 2802 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,782 psi | 87% | 2805 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,330 psi | 81% | 2772 fps | 97.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,472 psi | 75% | 2602 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,688 psi | 72% | 2598 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 35,331 psi | 54% | 2467 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,876 psi | 71% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,505 psi | 53% | 2461 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 80% | 51,358 psi | 79% | 2720 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,482 psi | 67% | 2572 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 43,801 psi | 67% | 2657 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,417 psi | 82% | 2717 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,969 psi | 85% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,703 psi | 73% | 2782 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 43,787 psi | 67% | 2657 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,758 psi | 67% | 2598 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,949 psi | 72% | 2667 fps | 99.8% |
| Alliant Reloder-16 | 44.4 gr | 80% | 34,069 psi | 52% | 2474 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,232 psi | 59% | 2595 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,279 psi | 67% | 2651 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,323 psi | 67% | 2697 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,455 psi | 41% | 2283 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,895 psi | 52% | 2503 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,242 psi | 50% | 2507 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,068 psi | 79% | 2736 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,990 psi | 68% | 2612 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,323 psi | 67% | 2697 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 38,899 psi | 60% | 2480 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,737 psi | 84% | 2697 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,214 psi | 82% | 2749 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,512 psi | 69% | 2618 fps | 99% |
| Hodgdon H414 | <<locked>> | 82% | 38,986 psi | 60% | 2562 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 82% | 42,163 psi | 65% | 2582 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,895 psi | 80% | 2730 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,531 psi | 49% | 2372 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,298 psi | 74% | 2710 fps | 100% |
| Hodgdon Superformance | 53.1 gr | 84% | 41,002 psi | 63% | 2635 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,501 psi | 76% | 2680 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,156 psi | 80% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,730 psi | 70% | 2605 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,066 psi | 74% | 2635 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 39,450 psi | 61% | 2513 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,306 psi | 62% | 2510 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 33,359 psi | 51% | 2421 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 48,095 psi | 74% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,866 psi | 81% | 2759 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 53,417 psi | 82% | 2717 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,416 psi | 79% | 2697 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,430 psi | 78% | 2648 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,876 psi | 71% | 2608 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,927 psi | 58% | 2467 fps | 96.8% |
| Lovex S070 | <<locked>> | 80% | 36,187 psi | 56% | 2444 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 33,881 psi | 52% | 2434 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,241 psi | 77% | 2667 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,633 psi | 78% | 2664 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,296 psi | 71% | 2654 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,556 psi | 69% | 2654 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 39,813 psi | 61% | 2657 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,563 psi | 53% | 2461 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 80% | 46,369 psi | 71% | 2674 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 35,694 psi | 55% | 2497 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 53,490 psi | 82% | 2743 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,301 psi | 82% | 2756 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 42% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,527 psi | 69% | 2602 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,401 psi | 78% | 2779 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,669 psi | 63% | 2651 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,185 psi | 53% | 2477 fps | 96.7% |
| ReloadSwiss RS 70 | 48.6 gr | 80% | 33,634 psi | 52% | 2480 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 54,331 psi | 84% | 2694 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,718 psi | 73% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,394 psi | 64% | 2559 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 48,486 psi | 75% | 2694 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 42,177 psi | 65% | 2635 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 38,899 psi | 60% | 2480 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,927 psi | 58% | 2467 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,416 psi | 79% | 2697 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,876 psi | 71% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,187 psi | 56% | 2444 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,467 psi | 65% | 2612 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,083 psi | 80% | 2720 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,850 psi | 77% | 2694 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,140 psi | 79% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,076 psi | 66% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,173 psi | 57% | 2411 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,817 psi | 69% | 2687 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 50,923 psi | 78% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,924 psi | 80% | 2710 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,887 psi | 64% | 2559 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 53,403 psi | 82% | 2743 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 30,980 psi | 48% | 2415 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 40,147 psi | 62% | 2562 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,619 psi | 79% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,863 psi | 74% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,182 psi | 74% | 2602 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,929 psi | 61% | 2493 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 35,926 psi | 55% | 2461 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 96% | 42,163 psi | 65% | 2592 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,766 psi | 83% | 2717 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,514 psi | 72% | 2598 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,418 psi | 55% | 2461 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 28,790 psi | 44% | 2359 fps | 95.6% |
| Vihtavuori N560 | <<locked>> | 98% | 49,559 psi | 76% | 2825 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,288 psi | 54% | 2434 fps | 99.1% |
| Winchester 748 | <<locked>> | 80% | 54,157 psi | 83% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 39,189 psi | 60% | 2566 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,498 psi | 41% | 2365 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,734 psi | 77% | 2700 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,382 psi | 70% | 2657 fps | 95.7% |
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 107 powders for 7-6.5 PRCW loaded with the .284 | 155gr | Geco EXPRESS. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,953 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 155.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, Hodgdon Superformance rank at the top here: for 7-6.5 PRCW with the .284 | 155gr | Geco EXPRESS 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.