Load Specifications
Bullet:.284 | 127gr | Geco ZERO LG
Bullet Manufacturer:Geco
Bullet Weight:127 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:1:9.0
Load data in caliber 7-6.5 PRCW with .284 | 127gr | Geco ZERO LG bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 88% | 58,726 psi | 90% | 2979 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,188 psi | 88% | 3005 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 56,681 psi | 87% | 2995 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,651 psi | 86% | 3022 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,971 psi | 88% | 2995 fps | 96.4% |
| Accurate 4064 | <<locked>> | 94% | 56,652 psi | 87% | 3045 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,866 psi | 81% | 3064 fps | 99% |
| Accurate LT-30 | <<locked>> | 82% | 57,537 psi | 89% | 2920 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,957 psi | 89% | 2949 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 57,957 psi | 89% | 3084 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 55,535 psi | 85% | 3028 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,058 psi | 88% | 3035 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,595 psi | 89% | 3009 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,216 psi | 85% | 3094 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 57,957 psi | 89% | 3212 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,288 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 58,363 psi | 90% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,869 psi | 86% | 3071 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,416 psi | 79% | 3074 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,318 psi | 87% | 3176 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,201 psi | 56% | 2769 fps | 96.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,985 psi | 88% | 2913 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 58,175 psi | 90% | 3104 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 55,767 psi | 86% | 3064 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,057 psi | 86% | 3025 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,506 psi | 85% | 2969 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,449 psi | 87% | 3064 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 58,784 psi | 90% | 3176 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 57,986 psi | 89% | 3035 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,274 psi | 85% | 3005 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,217 psi | 88% | 3081 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,536 psi | 87% | 3123 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 98% | 57,290 psi | 88% | 3084 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 90% | 58,523 psi | 90% | 3097 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,355 psi | 73% | 2940 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 58,160 psi | 90% | 3133 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,856 psi | 89% | 3166 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 54% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,565 psi | 87% | 3048 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 58,262 psi | 90% | 3077 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 58,523 psi | 90% | 3064 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,274 psi | 85% | 2989 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 58,392 psi | 90% | 2943 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,765 psi | 81% | 2992 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 98% | 58,392 psi | 90% | 3064 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,285 psi | 77% | 3002 fps | 98.7% |
| IMR 4895 | <<locked>> | 92% | 57,290 psi | 88% | 3104 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 57,058 psi | 88% | 3035 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,305 psi | 88% | 3022 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 57,551 psi | 89% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,798 psi | 89% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 58,001 psi | 89% | 3058 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,101 psi | 88% | 3051 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,462 psi | 84% | 3028 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 56,318 psi | 87% | 3025 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,116 psi | 88% | 3028 fps | 100% |
| Norma 203B | <<locked>> | 94% | 58,610 psi | 90% | 3114 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,214 psi | 80% | 3054 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 55,724 psi | 86% | 3084 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,256 psi | 79% | 3045 fps | 97.2% |
| Ramshot TAC | <<locked>> | 88% | 57,682 psi | 89% | 3054 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,014 psi | 88% | 3071 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 58,305 psi | 90% | 3038 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 55% | 1903 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,565 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,551 psi | 89% | 3058 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,304 psi | 87% | 3143 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,985 psi | 86% | 3176 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,866 psi | 81% | 3087 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,997 psi | 82% | 3114 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 88% | 57,188 psi | 88% | 3009 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,898 psi | 88% | 3022 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,622 psi | 86% | 3054 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,057 psi | 86% | 3025 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,101 psi | 88% | 3051 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 57,551 psi | 89% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 58,001 psi | 89% | 3058 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,462 psi | 84% | 3028 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,449 psi | 87% | 2989 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,870 psi | 89% | 3123 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,782 psi | 86% | 2963 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,028 psi | 86% | 3031 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,376 psi | 87% | 3051 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 58,363 psi | 90% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 58,392 psi | 90% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 58,233 psi | 90% | 3009 fps | 97.4% |
| Somchem S321 | <<locked>> | 86% | 58,537 psi | 90% | 3071 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,392 psi | 88% | 2959 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,477 psi | 85% | 3018 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 55,985 psi | 86% | 3051 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,601 psi | 72% | 2999 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 57,928 psi | 89% | 2930 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 58,494 psi | 90% | 2949 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,652 psi | 87% | 2989 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,899 psi | 89% | 3009 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,551 psi | 89% | 3028 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,984 psi | 85% | 3054 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 88% | 57,624 psi | 89% | 3035 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,840 psi | 86% | 3002 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,911 psi | 83% | 3058 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,247 psi | 60% | 2854 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,869 psi | 86% | 3038 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 57,667 psi | 89% | 3087 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,536 psi | 87% | 3123 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,304 psi | 87% | 3061 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% | 45,687 psi | 70% | 2785 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,937 psi | 77% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,695 psi | 58% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,063 psi | 69% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,461 psi | 82% | 2940 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 35,665 psi | 55% | 2671 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 36,941 psi | 57% | 2756 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 54,244 psi | 83% | 2874 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,708 psi | 84% | 2904 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,076 psi | 65% | 2802 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 35,737 psi | 55% | 2641 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,208 psi | 68% | 2815 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 44,150 psi | 68% | 2815 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,663 psi | 80% | 3035 fps | 99.7% |
| Alliant Power Pro 2000-MR | 47.1 gr | 80% | 38,145 psi | 59% | 2815 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,114 psi | 54% | 2661 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,474 psi | 79% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,782 psi | 58% | 2726 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,434 psi | 58% | 2772 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 82% | 32,343 psi | 50% | 2667 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 34,127 psi | 53% | 2713 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,635 psi | 83% | 2867 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,394 psi | 64% | 2802 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 34,476 psi | 53% | 2657 fps | 97% |
| Bofors RP7 | <<locked>> | 94% | 49,545 psi | 76% | 2913 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,977 psi | 71% | 2812 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,801 psi | 66% | 2831 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,340 psi | 73% | 2982 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 50,502 psi | 78% | 2923 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,517 psi | 79% | 2949 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,043 psi | 59% | 2720 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 46,064 psi | 71% | 2940 fps | 95% |
| Hodgdon H4350 | <<locked>> | 96% | 53,751 psi | 83% | 3028 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,424 psi | 65% | 2815 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,024 psi | 49% | 2602 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,464 psi | 59% | 2776 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 50,009 psi | 77% | 3031 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 40% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,683 psi | 63% | 2762 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 41,829 psi | 64% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,492 psi | 58% | 2677 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,733 psi | 75% | 2874 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 51,793 psi | 80% | 2851 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,487 psi | 76% | 2936 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,356 psi | 74% | 2894 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 35,868 psi | 55% | 2710 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 38,711 psi | 60% | 2759 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 44,208 psi | 68% | 2815 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 49,777 psi | 77% | 2904 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,683 psi | 63% | 2776 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 42,395 psi | 65% | 2743 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 37,217 psi | 57% | 2680 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 41,713 psi | 64% | 2772 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 48,138 psi | 74% | 2917 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 40,944 psi | 63% | 2753 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 41,466 psi | 64% | 2769 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 37,173 psi | 57% | 2713 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 37,550 psi | 58% | 2762 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 36,767 psi | 57% | 2723 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 45,078 psi | 69% | 2927 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 44,251 psi | 68% | 2815 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,468 psi | 67% | 2835 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,906 psi | 74% | 2867 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 40% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,763 psi | 77% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,092 psi | 68% | 2822 fps | 95.1% |
| ReloadSwiss RS 52 | 45.6 gr | 80% | 39,407 psi | 61% | 2828 fps | 96.8% |
| ReloadSwiss RS 60 | 46.4 gr | 80% | 32,329 psi | 50% | 2680 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,798 psi | 61% | 2841 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,118 psi | 62% | 2848 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,802 psi | 69% | 2805 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,943 psi | 60% | 2700 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,285 psi | 50% | 2592 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 94% | 49,545 psi | 76% | 2913 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,713 psi | 64% | 2772 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,683 psi | 63% | 2776 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 37,217 psi | 57% | 2680 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 48,138 psi | 74% | 2917 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,605 psi | 81% | 2930 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,475 psi | 52% | 2648 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,489 psi | 81% | 2913 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,148 psi | 65% | 2782 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,538 psi | 62% | 2766 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,641 psi | 66% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,288 psi | 54% | 2572 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,326 psi | 73% | 2831 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 47,863 psi | 74% | 2900 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 42,061 psi | 65% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,119 psi | 65% | 2785 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 33,301 psi | 51% | 2605 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 29,109 psi | 45% | 2579 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,298 psi | 74% | 2789 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,989 psi | 66% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,348 psi | 59% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,117 psi | 60% | 2697 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,662 psi | 49% | 2543 fps | 97% |
| Vihtavuori N160 | <<locked>> | 88% | 36,767 psi | 57% | 2707 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 44,266 psi | 68% | 2812 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 37,782 psi | 58% | 2684 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 38,653 psi | 59% | 2766 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 34,229 psi | 53% | 2736 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,343 psi | 50% | 2569 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 43,787 psi | 67% | 2858 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 46,064 psi | 71% | 2940 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,987 psi | 62% | 2769 fps | 98.1% |
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 105 powders for 7-6.5 PRCW loaded with the .284 | 127gr | Geco ZERO LG. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,212 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 7-6.5 PRCW with the .284 | 127gr | Geco ZERO LG 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.