Load Specifications
Bullet Manufacturer:Fox Bullets
Bullet Weight:145 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Caliber:.270 Win. load data
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:67 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:9.0
Load data in caliber .270 Win. with .277 | 145gr | Fox Classic Hunter bullet and 101 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.
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% | 55,158 psi | 88% | 2671 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,983 psi | 87% | 2694 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,753 psi | 89% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,229 psi | 85% | 2710 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,136 psi | 72% | 2674 fps | 97.8% |
| Accurate 4064 | <<locked>> | 88% | 54,172 psi | 87% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,868 psi | 88% | 2844 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,389 psi | 87% | 2779 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,666 psi | 89% | 2782 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,997 psi | 85% | 2828 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,490 psi | 86% | 2730 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,737 psi | 88% | 2700 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,418 psi | 87% | 2900 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,779 psi | 85% | 2825 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,854 psi | 90% | 2805 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,231 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,043 psi | 90% | 2904 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,403 psi | 86% | 2877 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,996 psi | 83% | 2815 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,641 psi | 68% | 2697 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,536 psi | 60% | 2598 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,341 psi | 78% | 2874 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,447 psi | 87% | 2799 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 52,750 psi | 85% | 2766 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 53,098 psi | 85% | 2749 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,839 psi | 88% | 2710 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 52,852 psi | 85% | 2756 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,911 psi | 86% | 2785 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 53,911 psi | 86% | 2844 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 54,375 psi | 87% | 2805 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,955 psi | 88% | 2789 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,753 psi | 89% | 2822 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,940 psi | 88% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,302 psi | 87% | 2881 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,723 psi | 57% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,217 psi | 90% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,622 psi | 89% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,201 psi | 89% | 2766 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,708 psi | 88% | 2749 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 53,679 psi | 86% | 2779 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,013 psi | 88% | 2779 fps | 98.5% |
| IMR 4831 | <<locked>> | 98% | 55,390 psi | 89% | 2838 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 54,273 psi | 87% | 2802 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 53,490 psi | 86% | 2730 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,447 psi | 87% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,751 psi | 86% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,013 psi | 88% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,244 psi | 87% | 2769 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 55,405 psi | 89% | 2808 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 53,156 psi | 85% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,780 psi | 86% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,419 psi | 89% | 2812 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,143 psi | 87% | 2825 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 47,790 psi | 77% | 2825 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 53,737 psi | 86% | 2831 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 52,576 psi | 84% | 2785 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,289 psi | 90% | 2884 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 53,635 psi | 86% | 2753 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,214 psi | 85% | 2766 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,405 psi | 58% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,983 psi | 87% | 2769 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,548 psi | 86% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,142 psi | 85% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,665 psi | 88% | 2867 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,606 psi | 86% | 2894 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 53,780 psi | 86% | 2700 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,809 psi | 86% | 2726 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,420 psi | 90% | 2812 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,665 psi | 88% | 2799 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,821 psi | 81% | 2795 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 53,098 psi | 85% | 2749 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,244 psi | 87% | 2769 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,447 psi | 87% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,013 psi | 88% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,405 psi | 89% | 2808 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,636 psi | 88% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,854 psi | 90% | 2785 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,069 psi | 85% | 2753 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,389 psi | 87% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,984 psi | 88% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,375 psi | 87% | 2726 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,343 psi | 81% | 2792 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 54,012 psi | 87% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,419 psi | 89% | 2772 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 53,301 psi | 85% | 2762 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,970 psi | 90% | 2884 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2772 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 84% | 54,839 psi | 88% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,664 psi | 86% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,418 psi | 87% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,578 psi | 88% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,420 psi | 90% | 2831 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 53,940 psi | 86% | 2730 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,246 psi | 90% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,984 psi | 88% | 2831 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2772 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,333 psi | 90% | 2805 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,070 psi | 87% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,911 psi | 86% | 2844 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,247 psi | 61% | 2723 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,750 psi | 85% | 2759 fps | 100% |
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% | 51,808 psi | 83% | 2628 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,164 psi | 71% | 2556 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,054 psi | 83% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,584 psi | 70% | 2546 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 36,405 psi | 58% | 2503 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 41,829 psi | 67% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,951 psi | 50% | 2388 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,848 psi | 77% | 2674 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 40,727 psi | 65% | 2530 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 46,441 psi | 74% | 2713 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,009 psi | 80% | 2677 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,256 psi | 82% | 2654 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,179 psi | 71% | 2726 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,340 psi | 74% | 2710 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,741 psi | 65% | 2556 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,439 psi | 70% | 2615 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,343 psi | 50% | 2405 fps | 95.4% |
| Alliant Reloder-17 | 44.1 gr | 80% | 35,186 psi | 56% | 2533 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 96% | 45,716 psi | 73% | 2703 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,253 psi | 44% | 2320 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,099 psi | 56% | 2539 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 33,475 psi | 54% | 2549 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,384 psi | 76% | 2687 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 40,364 psi | 65% | 2556 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 41,031 psi | 66% | 2533 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,692 psi | 83% | 2664 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,414 psi | 79% | 2703 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,234 psi | 66% | 2566 fps | 98% |
| Hodgdon H414 | <<locked>> | 86% | 41,191 psi | 66% | 2618 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 86% | 44,759 psi | 72% | 2641 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,356 psi | 78% | 2687 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,863 psi | 46% | 2313 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,715 psi | 72% | 2664 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 40,509 psi | 65% | 2625 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 43% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,485 psi | 75% | 2638 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 48,544 psi | 78% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,801 psi | 69% | 2562 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,397 psi | 73% | 2592 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 41,582 psi | 67% | 2566 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,234 psi | 65% | 2516 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 30,313 psi | 49% | 2356 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 44,556 psi | 71% | 2644 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,009 psi | 80% | 2677 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,413 psi | 76% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,659 psi | 76% | 2612 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 42,743 psi | 69% | 2562 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,969 psi | 56% | 2408 fps | 95.2% |
| Lovex S070 | <<locked>> | 84% | 37,884 psi | 61% | 2493 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,731 psi | 75% | 2625 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,514 psi | 76% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,830 psi | 69% | 2602 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 47,123 psi | 76% | 2707 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 41,597 psi | 67% | 2703 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 31,531 psi | 51% | 2398 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,844 psi | 69% | 2625 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 37,623 psi | 60% | 2549 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 49,966 psi | 80% | 2694 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,821 psi | 80% | 2713 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,876 psi | 43% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,350 psi | 66% | 2546 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,485 psi | 75% | 2726 fps | 99.6% |
| ReloadSwiss RS 60 | 44.1 gr | 80% | 37,492 psi | 60% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,301 psi | 53% | 2467 fps | 95.8% |
| ReloadSwiss RS 70 | 47 gr | 84% | 35,360 psi | 57% | 2530 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 50,604 psi | 81% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,425 psi | 71% | 2575 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,971 psi | 61% | 2503 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 51,343 psi | 82% | 2746 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 44,338 psi | 71% | 2684 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 84% | 41,031 psi | 66% | 2533 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,969 psi | 56% | 2408 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,413 psi | 76% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,743 psi | 69% | 2562 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,884 psi | 61% | 2493 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,102 psi | 63% | 2556 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,472 psi | 78% | 2674 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,470 psi | 75% | 2648 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,240 psi | 77% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,350 psi | 65% | 2444 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 39,059 psi | 63% | 2457 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,862 psi | 75% | 2733 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 47,616 psi | 76% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,196 psi | 77% | 2664 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 38,609 psi | 62% | 2507 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 28,137 psi | 45% | 2346 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 41,901 psi | 67% | 2605 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 48,762 psi | 78% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,527 psi | 71% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,976 psi | 72% | 2566 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,854 psi | 59% | 2444 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 32,793 psi | 53% | 2398 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 50,372 psi | 81% | 2677 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,366 psi | 70% | 2559 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,445 psi | 52% | 2402 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 86% | 29,472 psi | 47% | 2392 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,445 psi | 52% | 2375 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 50,488 psi | 81% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,191 psi | 66% | 2618 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,253 psi | 44% | 2392 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,108 psi | 74% | 2651 fps | 99.9% |
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 101 powders for .270 Win. loaded with the .277 | 145gr | Fox Classic Hunter. Alliant Reloder-16 delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,904 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.277" calls for a 1:9.0 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-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. with the .277 | 145gr | Fox Classic Hunter 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.