Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:150 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 | 150gr | Berger VLD Hunting bullet and 98 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 Alliant Reloder-26.
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 2495 | <<locked>> | 84% | 56,028 psi | 90% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,896 psi | 86% | 2694 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 2730 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 56,391 psi | 90% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,156 psi | 85% | 2782 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,405 psi | 89% | 2756 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,185 psi | 85% | 2713 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,331 psi | 87% | 2822 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2805 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,709 psi | 89% | 2884 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,708 psi | 86% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,027 psi | 87% | 2756 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,838 psi | 86% | 2835 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,158 psi | 88% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,548 psi | 86% | 2812 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,285 psi | 81% | 2802 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2749 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,713 psi | 67% | 2671 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2940 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,245 psi | 89% | 2776 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,383 psi | 74% | 2733 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 54,476 psi | 87% | 2753 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,285 psi | 81% | 2802 fps | 97.3% |
| Bofors RP7 | <<locked>> | 90% | 54,143 psi | 87% | 2736 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 54,969 psi | 88% | 2766 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 55,434 psi | 89% | 2831 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 55,390 psi | 89% | 2792 fps | 98.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,651 psi | 89% | 2812 fps | 96.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2792 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 56,057 psi | 90% | 2766 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,288 psi | 87% | 2762 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,347 psi | 90% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,405 psi | 89% | 2867 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,216 psi | 58% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,737 psi | 86% | 2720 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,014 psi | 90% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,521 psi | 89% | 2733 fps | 99.1% |
| IMR 4350 | <<locked>> | 94% | 54,824 psi | 88% | 2766 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,782 psi | 89% | 2762 fps | 99.1% |
| IMR 4831 | <<locked>> | 94% | 53,490 psi | 86% | 2772 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,463 psi | 89% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,983 psi | 87% | 2753 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 55,854 psi | 90% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,447 psi | 87% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,159 psi | 90% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,724 psi | 89% | 2759 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 53,403 psi | 86% | 2746 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,163 psi | 68% | 2585 fps | 97.8% |
| Norma 201 | <<locked>> | 82% | 54,128 psi | 87% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,911 psi | 88% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,330 psi | 86% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,347 psi | 89% | 2815 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 53,388 psi | 86% | 2887 fps | 99% |
| Norma URP | <<locked>> | 94% | 55,419 psi | 89% | 2818 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,925 psi | 86% | 2769 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,056 psi | 87% | 2818 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,005 psi | 71% | 2667 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 59% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,027 psi | 88% | 2753 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,969 psi | 88% | 2822 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,549 psi | 87% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,895 psi | 85% | 2805 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,158 psi | 88% | 2884 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 54,984 psi | 88% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,679 psi | 88% | 2749 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,014 psi | 90% | 2792 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2844 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 54,143 psi | 87% | 2736 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,724 psi | 89% | 2759 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,854 psi | 90% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,159 psi | 90% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,403 psi | 86% | 2746 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,260 psi | 90% | 2805 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,983 psi | 87% | 2733 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,216 psi | 89% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,985 psi | 90% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,521 psi | 89% | 2713 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,535 psi | 89% | 2841 fps | 98.2% |
| Somchem S335 | <<locked>> | 82% | 54,694 psi | 88% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,231 psi | 90% | 2749 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,476 psi | 87% | 2740 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,491 psi | 87% | 2822 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,127 psi | 85% | 2769 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 55,724 psi | 89% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,056 psi | 88% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,419 psi | 89% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,086 psi | 90% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,230 psi | 87% | 2762 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,182 psi | 79% | 2694 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 53,577 psi | 86% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,316 psi | 85% | 2769 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,330 psi | 86% | 2825 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,882 psi | 86% | 2874 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,722 psi | 86% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,434 psi | 89% | 2831 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,786 psi | 69% | 2795 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,070 psi | 87% | 2740 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,330 psi | 86% | 2762 fps | 97.6% |
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% | 49,342 psi | 79% | 2589 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,253 psi | 76% | 2585 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 33,765 psi | 54% | 2408 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,746 psi | 75% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,172 psi | 56% | 2454 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 80% | 52,011 psi | 83% | 2707 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,179 psi | 71% | 2562 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 44,657 psi | 72% | 2651 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 48,443 psi | 78% | 2746 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,530 psi | 78% | 2769 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,585 psi | 71% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,587 psi | 76% | 2654 fps | 99.9% |
| Alliant Reloder-16 | 42.6 gr | 80% | 34,722 psi | 56% | 2464 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,117 psi | 63% | 2589 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,179 psi | 71% | 2644 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,106 psi | 71% | 2690 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,890 psi | 43% | 2277 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,505 psi | 55% | 2497 fps | 95.9% |
| Alliant Reloder-26 | 49.4 gr | 84% | 30,806 psi | 49% | 2444 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,619 psi | 83% | 2720 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 43,482 psi | 70% | 2677 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 44,744 psi | 72% | 2598 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,106 psi | 71% | 2690 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,566 psi | 63% | 2470 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,281 psi | 73% | 2608 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 37,333 psi | 60% | 2500 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 42,960 psi | 69% | 2575 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 98% | 52,054 psi | 83% | 2756 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 50,807 psi | 81% | 2736 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 52,620 psi | 84% | 2713 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,155 psi | 52% | 2365 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,255 psi | 79% | 2700 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 38,870 psi | 62% | 2562 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 43% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,430 psi | 81% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,456 psi | 74% | 2595 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,718 psi | 78% | 2621 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 40,205 psi | 64% | 2507 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,031 psi | 66% | 2503 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 33,910 psi | 54% | 2408 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 48,820 psi | 78% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,676 psi | 81% | 2700 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 52,373 psi | 84% | 2684 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,111 psi | 82% | 2635 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,659 psi | 75% | 2595 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,609 psi | 62% | 2457 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 36,680 psi | 59% | 2431 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 34,809 psi | 56% | 2431 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,068 psi | 82% | 2654 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,532 psi | 83% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,963 psi | 75% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 88% | 45,440 psi | 73% | 2648 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 37,927 psi | 61% | 2589 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 35,114 psi | 56% | 2448 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 47,210 psi | 76% | 2664 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 80% | 34,026 psi | 55% | 2431 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 40,843 psi | 65% | 2605 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 44% | 1552 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,324 psi | 73% | 2592 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,140 psi | 82% | 2762 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,597 psi | 67% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,838 psi | 56% | 2467 fps | 97% |
| ReloadSwiss RS 70 | 46.6 gr | 80% | 34,229 psi | 55% | 2474 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 48,689 psi | 78% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,018 psi | 67% | 2546 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 49,182 psi | 79% | 2680 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 43,091 psi | 69% | 2628 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 39,566 psi | 63% | 2470 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,609 psi | 62% | 2457 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,373 psi | 84% | 2684 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,659 psi | 75% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,680 psi | 59% | 2431 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,018 psi | 69% | 2595 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,401 psi | 81% | 2677 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,750 psi | 83% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,598 psi | 70% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,681 psi | 60% | 2402 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,685 psi | 68% | 2621 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 51,692 psi | 83% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,518 psi | 84% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,656 psi | 68% | 2549 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 31,734 psi | 51% | 2411 fps | 99.2% |
| Somchem S385 | <<locked>> | 90% | 41,002 psi | 66% | 2556 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 52,257 psi | 84% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,530 psi | 78% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,776 psi | 78% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,480 psi | 65% | 2477 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,521 psi | 59% | 2451 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 40,350 psi | 65% | 2533 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 47,268 psi | 76% | 2585 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,114 psi | 58% | 2454 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 27,601 psi | 44% | 2300 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 50,488 psi | 81% | 2818 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,737 psi | 57% | 2421 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 37,333 psi | 60% | 2500 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,367 psi | 41% | 2300 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,444 psi | 81% | 2687 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 43,207 psi | 69% | 2592 fps | 95.2% |
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 98 powders for .270 Win. loaded with the .277 | 150gr | Berger VLD Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,940 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 150.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Alliant Reloder-26 rank at the top here: for .270 Win. with the .277 | 150gr | Berger VLD Hunting 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.