Load Specifications
Bullet Manufacturer:Federal
Bullet Weight:115 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5-06 A-Square load data
Case Length (l3):2.494"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65.7 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:7.5
Load data in caliber 6.5-06 A-Square with .257 | 115gr | Federal Trophy Bonded bullet and 103 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 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 2015 | <<locked>> | 82% | 57,667 psi | 89% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,580 psi | 89% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,464 psi | 88% | 3012 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,464 psi | 88% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,101 psi | 88% | 2972 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,776 psi | 75% | 2930 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 57,885 psi | 89% | 3012 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 58,508 psi | 90% | 3114 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 57,029 psi | 88% | 3038 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 58,421 psi | 90% | 3045 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,057 psi | 86% | 3091 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,985 psi | 86% | 2989 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,392 psi | 88% | 2953 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,392 psi | 88% | 3169 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,956 psi | 86% | 3087 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,230 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,593 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,535 psi | 85% | 3117 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,913 psi | 88% | 3146 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,114 psi | 85% | 3077 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,745 psi | 70% | 2956 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,176 psi | 62% | 2851 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,170 psi | 80% | 3146 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,261 psi | 88% | 3058 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,101 psi | 86% | 3028 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,622 psi | 86% | 3002 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,217 psi | 88% | 2963 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,608 psi | 86% | 3012 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,652 psi | 87% | 3045 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 58,668 psi | 90% | 3133 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 55,172 psi | 85% | 3035 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 84% | 57,624 psi | 89% | 3048 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,709 psi | 86% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 58,015 psi | 89% | 3087 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,551 psi | 89% | 3146 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 55% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,986 psi | 89% | 3038 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,797 psi | 87% | 3009 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,029 psi | 88% | 3015 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,028 psi | 86% | 2986 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 56,318 psi | 87% | 3035 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,580 psi | 89% | 3038 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,825 psi | 86% | 3054 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 57,029 psi | 88% | 3068 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,985 psi | 86% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,464 psi | 88% | 3012 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,043 psi | 86% | 2959 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,783 psi | 89% | 3018 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,174 psi | 88% | 3028 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 58,392 psi | 90% | 3071 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,248 psi | 62% | 2766 fps | 96.1% |
| Norma 201 | <<locked>> | 84% | 55,999 psi | 86% | 2986 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,492 psi | 87% | 2979 fps | 100% |
| Norma 203B | <<locked>> | 88% | 58,537 psi | 90% | 3077 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,363 psi | 88% | 3087 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 51,387 psi | 79% | 3094 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 56,869 psi | 88% | 3094 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,564 psi | 86% | 3045 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,854 psi | 86% | 3094 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 55,970 psi | 86% | 3005 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,057 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 56% | 1923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,768 psi | 87% | 3028 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,463 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,246 psi | 87% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 58,363 psi | 90% | 3136 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,188 psi | 88% | 3166 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 56,797 psi | 87% | 2963 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,579 psi | 87% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,970 psi | 86% | 3022 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,754 psi | 89% | 3061 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,172 psi | 83% | 3061 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 55,622 psi | 86% | 3002 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,174 psi | 88% | 3028 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,464 psi | 88% | 3012 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,783 psi | 89% | 3018 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 58,392 psi | 90% | 3071 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,972 psi | 89% | 3087 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 58,552 psi | 90% | 3041 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,521 psi | 85% | 3009 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,942 psi | 88% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,435 psi | 88% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,246 psi | 88% | 2979 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,679 psi | 83% | 3054 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 56,608 psi | 87% | 2913 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 58,305 psi | 90% | 3031 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,086 psi | 86% | 3018 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,825 psi | 86% | 3097 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 3035 fps | 97.8% |
| Unknown powder | <<locked>> | 94% | 57,754 psi | 89% | 3100 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 58,740 psi | 90% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,768 psi | 87% | 2894 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,550 psi | 87% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,246 psi | 87% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,696 psi | 89% | 2999 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 58,581 psi | 90% | 3071 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 86% | 55,970 psi | 86% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,668 psi | 90% | 3120 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,039 psi | 79% | 3035 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,709 psi | 86% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 58,668 psi | 90% | 3133 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,162 psi | 63% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,421 psi | 88% | 3064 fps | 97.3% |
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 2015 | <<locked>> | 80% | 54,331 psi | 84% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,543 psi | 73% | 2808 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,476 psi | 82% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,476 psi | 82% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,947 psi | 68% | 2740 fps | 95.1% |
| Accurate 3100 | <<locked>> | 94% | 39,450 psi | 61% | 2749 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,020 psi | 69% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,634 psi | 52% | 2631 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 50,401 psi | 78% | 2930 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,743 psi | 66% | 2769 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 48,979 psi | 75% | 2966 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,460 psi | 81% | 2933 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,896 psi | 83% | 2907 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,601 psi | 72% | 2979 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,965 psi | 75% | 2963 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,989 psi | 66% | 2799 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,006 psi | 71% | 2867 fps | 99.3% |
| Alliant Reloder-16 | 42 gr | 80% | 33,388 psi | 51% | 2644 fps | 95.6% |
| Alliant Reloder-17 | 45.2 gr | 80% | 37,478 psi | 58% | 2776 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,298 psi | 74% | 2956 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,283 psi | 45% | 2549 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,666 psi | 58% | 2785 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,910 psi | 52% | 2736 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,096 psi | 77% | 2940 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 43,105 psi | 66% | 2808 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 43,381 psi | 67% | 2776 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,737 psi | 83% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,098 psi | 80% | 2959 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,497 psi | 67% | 2808 fps | 98% |
| Hodgdon H414 | <<locked>> | 82% | 41,568 psi | 64% | 2818 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 45,948 psi | 71% | 2864 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,952 psi | 78% | 2940 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,821 psi | 47% | 2539 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,527 psi | 69% | 2864 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 43,236 psi | 67% | 2881 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 41% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,208 psi | 70% | 2822 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 47,036 psi | 72% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,003 psi | 65% | 2746 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,553 psi | 64% | 2713 fps | 95.3% |
| IMR 4350 | <<locked>> | 88% | 43,801 psi | 67% | 2805 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,105 psi | 65% | 2753 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 33,547 psi | 52% | 2612 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 47,166 psi | 73% | 2897 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 52,460 psi | 81% | 2933 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,328 psi | 77% | 2907 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,632 psi | 76% | 2854 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,063 psi | 69% | 2808 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,289 psi | 57% | 2644 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 40,292 psi | 62% | 2733 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 37,724 psi | 58% | 2710 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 49,414 psi | 76% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,835 psi | 77% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,353 psi | 70% | 2854 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 50,111 psi | 77% | 2966 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 41,727 psi | 64% | 2897 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 33,649 psi | 52% | 2631 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 45,324 psi | 70% | 2871 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 39,929 psi | 61% | 2789 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 52,605 psi | 81% | 2949 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,286 psi | 80% | 2966 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 42% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,685 psi | 67% | 2789 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,255 psi | 76% | 2986 fps | 99.6% |
| ReloadSwiss RS 60 | 45.2 gr | 80% | 39,827 psi | 61% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,185 psi | 51% | 2641 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,099 psi | 54% | 2707 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 53,243 psi | 82% | 2910 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,833 psi | 72% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,437 psi | 62% | 2746 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 54,012 psi | 83% | 2999 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 96% | 47,181 psi | 73% | 2933 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 43,381 psi | 67% | 2776 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,289 psi | 57% | 2644 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,328 psi | 77% | 2907 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,063 psi | 69% | 2808 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 40,292 psi | 62% | 2733 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,510 psi | 64% | 2799 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,111 psi | 79% | 2923 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,849 psi | 75% | 2897 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,140 psi | 77% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,119 psi | 65% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,365 psi | 64% | 2694 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,804 psi | 72% | 2930 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 50,140 psi | 77% | 2815 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,966 psi | 78% | 2920 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,104 psi | 63% | 2753 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 30,356 psi | 47% | 2585 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 45,020 psi | 69% | 2861 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 36,463 psi | 56% | 2690 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 55,376 psi | 85% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,413 psi | 73% | 2753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,731 psi | 72% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,470 psi | 72% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,186 psi | 54% | 2595 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 36,579 psi | 56% | 2667 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,412 psi | 71% | 2822 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,028 psi | 57% | 2707 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 86% | 32,010 psi | 49% | 2631 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,635 psi | 53% | 2608 fps | 98.1% |
| Winchester 760 | <<locked>> | 82% | 41,568 psi | 64% | 2818 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,631 psi | 46% | 2644 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,516 psi | 76% | 2933 fps | 95.6% |
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 103 powders for 6.5-06 A-Square loaded with the .257 | 115gr | Federal Trophy Bonded. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,169 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 115.0 gr projectile in 0.264" calls for a 1:7.5 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Reloder-16 rank at the top here: for 6.5-06 A-Square with the .257 | 115gr | Federal Trophy Bonded 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.