Load Specifications
Bullet:.277 | 145gr | Hornady ELD-X
Bullet Manufacturer:Hornady
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:1:9.5
Load data in caliber .270 Win. with .277 | 145gr | Hornady ELD-X 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-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.
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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 2495 | <<locked>> | 84% | 53,403 psi | 86% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,303 psi | 89% | 2746 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,848 psi | 77% | 2717 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 53,824 psi | 86% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,925 psi | 86% | 2831 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,113 psi | 85% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,462 psi | 87% | 2769 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,187 psi | 88% | 2867 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,317 psi | 89% | 2759 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,895 psi | 85% | 2881 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,824 psi | 88% | 2789 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,201 psi | 89% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,737 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,956 psi | 90% | 2917 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,230 psi | 87% | 2854 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,529 psi | 76% | 2789 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,962 psi | 72% | 2743 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,537 psi | 63% | 2648 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 2920 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,026 psi | 85% | 2779 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,274 psi | 89% | 2802 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,529 psi | 76% | 2789 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 55,230 psi | 89% | 2785 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,187 psi | 88% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,217 psi | 90% | 2822 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 56,405 psi | 90% | 2884 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 56,376 psi | 90% | 2841 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 53,722 psi | 86% | 2772 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,868 psi | 88% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,606 psi | 86% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,562 psi | 84% | 2854 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 58% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,665 psi | 88% | 2772 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,056 psi | 87% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,766 psi | 86% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,185 psi | 85% | 2730 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 55,579 psi | 89% | 2808 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,417 psi | 86% | 2759 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 54,317 psi | 87% | 2822 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,069 psi | 85% | 2785 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,317 psi | 89% | 2759 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,374 psi | 86% | 2740 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,782 psi | 89% | 2740 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,824 psi | 86% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,272 psi | 85% | 2756 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 54,288 psi | 87% | 2795 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,740 psi | 64% | 2569 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 55,347 psi | 89% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,144 psi | 90% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,476 psi | 87% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,779 psi | 85% | 2808 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2874 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 56,347 psi | 90% | 2871 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,100 psi | 88% | 2825 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,940 psi | 88% | 2867 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 55,637 psi | 89% | 2785 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,332 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 59% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,028 psi | 90% | 2802 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,028 psi | 90% | 2877 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,666 psi | 89% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,592 psi | 86% | 2854 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,188 psi | 90% | 2936 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 56,173 psi | 90% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,927 psi | 90% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,463 psi | 89% | 2799 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,563 psi | 86% | 2785 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,258 psi | 85% | 2838 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 55,230 psi | 89% | 2785 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,272 psi | 85% | 2756 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,374 psi | 86% | 2740 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,824 psi | 86% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,288 psi | 87% | 2795 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,563 psi | 86% | 2808 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,157 psi | 87% | 2762 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,187 psi | 88% | 2785 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,304 psi | 90% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,766 psi | 86% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,171 psi | 85% | 2710 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,750 psi | 85% | 2831 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 55,985 psi | 90% | 2687 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,012 psi | 87% | 2756 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,666 psi | 89% | 2795 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,824 psi | 88% | 2867 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,737 psi | 86% | 2812 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 53,476 psi | 86% | 2628 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,202 psi | 90% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,142 psi | 85% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,505 psi | 86% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,129 psi | 88% | 2815 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,528 psi | 75% | 2680 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 55,854 psi | 90% | 2759 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,795 psi | 88% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,896 psi | 86% | 2815 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,082 psi | 80% | 2815 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,824 psi | 88% | 2785 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,376 psi | 90% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,405 psi | 90% | 2884 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,408 psi | 65% | 2776 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,940 psi | 88% | 2792 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2753 fps | 96.5% |
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 2495 | <<locked>> | 80% | 46,934 psi | 75% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,353 psi | 73% | 2582 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 36,405 psi | 58% | 2500 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,411 psi | 71% | 2595 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,344 psi | 53% | 2444 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,111 psi | 80% | 2713 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,511 psi | 68% | 2566 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 45,440 psi | 73% | 2697 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,185 psi | 84% | 2713 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,963 psi | 74% | 2759 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,728 psi | 69% | 2592 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,687 psi | 73% | 2657 fps | 99.6% |
| Alliant Reloder-16 | 41.7 gr | 80% | 33,011 psi | 53% | 2451 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,956 psi | 59% | 2575 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,846 psi | 72% | 2690 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,730 psi | 72% | 2733 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,238 psi | 44% | 2316 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,780 psi | 56% | 2533 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,344 psi | 53% | 2543 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,472 psi | 79% | 2720 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,554 psi | 68% | 2598 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 44,730 psi | 72% | 2733 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 40,379 psi | 65% | 2520 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,430 psi | 82% | 2736 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,192 psi | 69% | 2605 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 40,495 psi | 65% | 2602 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 43,787 psi | 70% | 2621 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,618 psi | 81% | 2723 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,647 psi | 49% | 2359 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,963 psi | 75% | 2703 fps | 100% |
| Hodgdon Superformance | 51.1 gr | 86% | 42,598 psi | 68% | 2674 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 43% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,312 psi | 77% | 2671 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,763 psi | 81% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,643 psi | 72% | 2598 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,050 psi | 75% | 2625 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 40,770 psi | 65% | 2549 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,247 psi | 63% | 2497 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 32,256 psi | 52% | 2402 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 46,833 psi | 75% | 2684 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 52,185 psi | 84% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,966 psi | 80% | 2690 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,400 psi | 79% | 2641 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,788 psi | 72% | 2598 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,840 psi | 59% | 2451 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 39,769 psi | 64% | 2533 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 37,101 psi | 59% | 2516 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 48,878 psi | 78% | 2657 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,559 psi | 79% | 2664 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,034 psi | 72% | 2644 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,166 psi | 74% | 2694 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 41,002 psi | 66% | 2690 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,388 psi | 54% | 2441 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,730 psi | 72% | 2657 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,086 psi | 59% | 2536 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 51,982 psi | 83% | 2730 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,938 psi | 83% | 2746 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 44% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,381 psi | 70% | 2589 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,602 psi | 78% | 2762 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,291 psi | 63% | 2635 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,895 psi | 53% | 2454 fps | 95.8% |
| ReloadSwiss RS 70 | 46.8 gr | 82% | 34,824 psi | 56% | 2516 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 52,982 psi | 85% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,557 psi | 75% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,132 psi | 64% | 2546 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,111 psi | 80% | 2730 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 43,642 psi | 70% | 2671 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 40,379 psi | 65% | 2520 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,840 psi | 59% | 2451 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,966 psi | 80% | 2690 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,788 psi | 72% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,769 psi | 64% | 2533 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,959 psi | 66% | 2592 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,749 psi | 81% | 2710 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,283 psi | 77% | 2680 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,879 psi | 80% | 2598 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,901 psi | 67% | 2470 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,464 psi | 62% | 2448 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,006 psi | 74% | 2717 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,603 psi | 80% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,328 psi | 81% | 2700 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,625 psi | 65% | 2546 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,921 psi | 48% | 2395 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 41,466 psi | 66% | 2598 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,357 psi | 81% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,441 psi | 74% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,905 psi | 75% | 2595 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,769 psi | 62% | 2480 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,867 psi | 56% | 2448 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 98% | 43,482 psi | 70% | 2625 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 52,272 psi | 84% | 2707 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,223 psi | 73% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,287 psi | 55% | 2444 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 29,559 psi | 47% | 2392 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,142 psi | 55% | 2418 fps | 98.5% |
| Winchester 748 | <<locked>> | 80% | 52,794 psi | 85% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,495 psi | 65% | 2602 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,354 psi | 44% | 2398 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,283 psi | 77% | 2687 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,152 psi | 76% | 2694 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 101 powders for .270 Win. loaded with the .277 | 145gr | Hornady ELD-X. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,936 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 58–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.277" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 .270 Win. with the .277 | 145gr | Hornady ELD-X 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.