Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:140 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:1:10.5
Load data in caliber .270 Win. with .277 | 140gr | Berger Classic Hybrid Hunter bullet and 100 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% | 53,969 psi | 87% | 2749 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,695 psi | 89% | 2812 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,443 psi | 78% | 2782 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 54,288 psi | 87% | 2805 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,230 psi | 87% | 2894 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,650 psi | 86% | 2828 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,766 psi | 88% | 2831 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2927 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,854 psi | 90% | 2825 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,374 psi | 86% | 2946 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,550 psi | 89% | 2927 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,114 psi | 88% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,535 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,969 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,420 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,781 psi | 88% | 2920 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2854 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,281 psi | 73% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,711 psi | 64% | 2703 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2986 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,200 psi | 85% | 2841 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,825 psi | 90% | 2867 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2854 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 55,608 psi | 89% | 2848 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,434 psi | 89% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,895 psi | 85% | 2828 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 52,997 psi | 85% | 2887 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 90% | 53,243 psi | 85% | 2848 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 82% | 54,215 psi | 87% | 2838 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,347 psi | 89% | 2877 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,128 psi | 87% | 2874 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,316 psi | 85% | 2923 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,100 psi | 88% | 2835 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,447 psi | 87% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,201 psi | 87% | 2812 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,505 psi | 86% | 2789 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 56,028 psi | 90% | 2874 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,853 psi | 86% | 2825 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 54,810 psi | 88% | 2887 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,505 psi | 86% | 2854 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,854 psi | 90% | 2825 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,780 psi | 86% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,941 psi | 90% | 2802 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,273 psi | 87% | 2808 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,635 psi | 86% | 2818 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 54,897 psi | 88% | 2861 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,972 psi | 64% | 2625 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 55,840 psi | 90% | 2822 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,289 psi | 90% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,766 psi | 88% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,142 psi | 85% | 2867 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 51,082 psi | 82% | 2940 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 53,301 psi | 85% | 2884 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 55,419 psi | 89% | 2887 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,593 psi | 89% | 2933 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 55,767 psi | 89% | 2848 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,898 psi | 90% | 2864 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,535 psi | 59% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,026 psi | 85% | 2812 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,318 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,927 psi | 90% | 2972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,954 psi | 87% | 2917 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,823 psi | 85% | 2940 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 56,420 psi | 90% | 2822 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,999 psi | 90% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 53,911 psi | 86% | 2848 fps | 95.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,534 psi | 86% | 2900 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 55,608 psi | 89% | 2848 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,635 psi | 86% | 2818 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,780 psi | 86% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,273 psi | 87% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,897 psi | 88% | 2861 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,969 psi | 87% | 2871 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,679 psi | 88% | 2831 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,434 psi | 89% | 2851 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,417 psi | 86% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,867 psi | 86% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,432 psi | 86% | 2769 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2894 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 53,113 psi | 85% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,201 psi | 87% | 2815 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,883 psi | 90% | 2858 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,288 psi | 89% | 2933 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,563 psi | 87% | 2881 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 82% | 53,853 psi | 86% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,939 psi | 85% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,577 psi | 86% | 2753 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,925 psi | 86% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,361 psi | 89% | 2874 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 2743 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 82% | 56,333 psi | 90% | 2825 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,013 psi | 88% | 2795 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,650 psi | 88% | 2884 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,821 psi | 81% | 2884 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,274 psi | 89% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,301 psi | 85% | 2894 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,959 psi | 66% | 2841 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,419 psi | 89% | 2858 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2815 fps | 96.4% |
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% | 47,326 psi | 76% | 2654 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,687 psi | 73% | 2641 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,651 psi | 59% | 2552 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 44,817 psi | 72% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,591 psi | 54% | 2497 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,372 psi | 81% | 2776 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,844 psi | 69% | 2625 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 45,643 psi | 73% | 2756 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,475 psi | 84% | 2776 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,557 psi | 75% | 2828 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,600 psi | 73% | 2756 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,786 psi | 69% | 2648 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,977 psi | 74% | 2717 fps | 99.5% |
| Alliant Reloder-16 | 43.2 gr | 80% | 33,257 psi | 53% | 2507 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,260 psi | 60% | 2631 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,049 psi | 72% | 2749 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,991 psi | 72% | 2792 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,499 psi | 44% | 2369 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,085 psi | 56% | 2589 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,678 psi | 54% | 2602 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,734 psi | 80% | 2782 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,786 psi | 69% | 2654 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,991 psi | 72% | 2792 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 43,236 psi | 69% | 2631 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,083 psi | 84% | 2802 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,381 psi | 70% | 2661 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 40,756 psi | 65% | 2657 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 44,092 psi | 71% | 2684 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,937 psi | 82% | 2785 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,734 psi | 49% | 2408 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,079 psi | 75% | 2759 fps | 100% |
| Hodgdon Superformance | 52.9 gr | 86% | 42,975 psi | 69% | 2733 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 43% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,588 psi | 78% | 2733 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,198 psi | 82% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,020 psi | 72% | 2661 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,268 psi | 76% | 2684 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 41,017 psi | 66% | 2608 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,508 psi | 63% | 2552 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 32,503 psi | 52% | 2457 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 47,152 psi | 76% | 2746 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,475 psi | 84% | 2776 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,154 psi | 80% | 2749 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,734 psi | 80% | 2707 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,165 psi | 72% | 2661 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,115 psi | 60% | 2507 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 40,132 psi | 64% | 2592 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 37,579 psi | 60% | 2575 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,211 psi | 79% | 2720 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,603 psi | 80% | 2720 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,353 psi | 73% | 2703 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,398 psi | 74% | 2749 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 41,510 psi | 67% | 2753 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,663 psi | 54% | 2497 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 45,310 psi | 73% | 2723 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,304 psi | 60% | 2592 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,228 psi | 84% | 2792 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,243 psi | 84% | 2808 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 44% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,540 psi | 70% | 2644 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,081 psi | 79% | 2828 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,639 psi | 64% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,214 psi | 53% | 2510 fps | 95.6% |
| ReloadSwiss RS 70 | 48.4 gr | 82% | 34,998 psi | 56% | 2569 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 46,949 psi | 75% | 2674 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,451 psi | 65% | 2605 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 50,589 psi | 81% | 2792 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 96% | 46,905 psi | 75% | 2785 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 84% | 43,236 psi | 69% | 2631 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,115 psi | 60% | 2507 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,154 psi | 80% | 2749 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,165 psi | 72% | 2661 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,132 psi | 64% | 2592 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,350 psi | 66% | 2654 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,024 psi | 82% | 2769 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,733 psi | 78% | 2743 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,082 psi | 80% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,076 psi | 67% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,841 psi | 62% | 2503 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,456 psi | 74% | 2779 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,951 psi | 80% | 2661 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,647 psi | 81% | 2759 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,930 psi | 66% | 2605 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,168 psi | 48% | 2451 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 41,930 psi | 67% | 2657 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,546 psi | 81% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,673 psi | 75% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,195 psi | 76% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,073 psi | 63% | 2539 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,085 psi | 56% | 2500 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 43,787 psi | 70% | 2684 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 52,518 psi | 84% | 2769 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,440 psi | 73% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,447 psi | 55% | 2497 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 29,921 psi | 48% | 2444 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,360 psi | 55% | 2470 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 40,756 psi | 65% | 2657 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,572 psi | 44% | 2448 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,631 psi | 78% | 2749 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,645 psi | 76% | 2756 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 100 powders for .270 Win. loaded with the .277 | 140gr | Berger Classic Hybrid Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,986 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 140.0 gr projectile in 0.277" calls for a 1:10.5 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. ReloadSwiss RS 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .270 Win. with the .277 | 140gr | Berger Classic Hybrid 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.