Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:150 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:70 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:72,519 psi
Recommended Twist Rate:1:10.5
Load data in caliber .270 Win. Ackley Improved with .277 | 150gr | Berger VLD Hunting bullet and 122 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% | 62,033 psi | 86% | 2733 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 62,685 psi | 86% | 2772 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 63,788 psi | 88% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 64,049 psi | 88% | 2858 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,940 psi | 74% | 2795 fps | 99.7% |
| Accurate 4064 | <<locked>> | 88% | 62,743 psi | 87% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 64,382 psi | 89% | 2949 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,970 psi | 77% | 2933 fps | 96.5% |
| ADI APS 450 | <<locked>> | 86% | 64,730 psi | 89% | 2208 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 65,557 psi | 90% | 2913 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 62,816 psi | 87% | 2867 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 61,032 psi | 84% | 2946 fps | 99.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,636 psi | 75% | 2881 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 63,788 psi | 88% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 62,236 psi | 86% | 2762 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 63,077 psi | 87% | 3002 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 60,974 psi | 84% | 2940 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 63,614 psi | 88% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 64,063 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 64,643 psi | 89% | 2999 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 62,671 psi | 86% | 2976 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 60,060 psi | 83% | 2930 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,505 psi | 74% | 2877 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,778 psi | 70% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,106 psi | 61% | 2740 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,436 psi | 81% | 3009 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 61,888 psi | 85% | 2884 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,168 psi | 68% | 2802 fps | 97.3% |
| Bofors RP3 | <<locked>> | 90% | 65,151 psi | 90% | 2907 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,505 psi | 74% | 2877 fps | 98.3% |
| Bofors RP7 | <<locked>> | 94% | 64,092 psi | 88% | 2900 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 64,919 psi | 90% | 2825 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 64,643 psi | 89% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 61,467 psi | 85% | 2877 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 62,468 psi | 86% | 2953 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 92% | 61,946 psi | 85% | 2910 fps | 99.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,726 psi | 81% | 2884 fps | 97.2% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,363 psi | 79% | 2864 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 62,207 psi | 86% | 2867 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 64,934 psi | 90% | 2913 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 63,164 psi | 87% | 2910 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,120 psi | 59% | 2766 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 94% | 63,454 psi | 88% | 2999 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 50% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 63,367 psi | 87% | 2871 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 63,280 psi | 87% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 62,091 psi | 86% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 65,224 psi | 90% | 2890 fps | 99.9% |
| IMR 4350 | <<locked>> | 98% | 65,195 psi | 90% | 2933 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 65,601 psi | 90% | 2923 fps | 99.9% |
| IMR 4831 | <<locked>> | 98% | 64,324 psi | 89% | 2933 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 61,888 psi | 85% | 2890 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 60,191 psi | 83% | 2871 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,301 psi | 72% | 2854 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 84% | 63,788 psi | 88% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 62,526 psi | 86% | 2835 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 63,585 psi | 88% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 62,555 psi | 86% | 2841 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 61,902 psi | 85% | 2867 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 63,454 psi | 88% | 2910 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,889 psi | 62% | 2651 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 63,933 psi | 88% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 86% | 64,861 psi | 89% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 88% | 63,222 psi | 87% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 96% | 62,526 psi | 86% | 2940 fps | 99.1% |
| Norma MRPᴾ | <<locked>> | 100% | 57,043 psi | 79% | 2963 fps | 99.6% |
| Norma URP | <<locked>> | 96% | 62,265 psi | 86% | 2930 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 64,730 psi | 89% | 2930 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,460 psi | 72% | 2867 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 98% | 65,267 psi | 90% | 2992 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,775 psi | 65% | 2746 fps | 97.6% |
| Ramshot TAC | <<locked>> | 84% | 64,266 psi | 89% | 2894 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 84% | 64,527 psi | 89% | 2900 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 64,716 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 51% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 65,601 psi | 90% | 2920 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 61,786 psi | 85% | 2936 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 62,105 psi | 86% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 64,440 psi | 89% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 62,656 psi | 86% | 3009 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,120 psi | 59% | 2762 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 84% | 64,440 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 64,513 psi | 89% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 65,325 psi | 90% | 2904 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 62,729 psi | 87% | 2910 fps | 98.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 59,538 psi | 82% | 2920 fps | 99% |
| Rottweil R 907 | <<locked>> | 94% | 64,092 psi | 88% | 2900 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 61,902 psi | 85% | 2867 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 62,526 psi | 86% | 2835 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 62,555 psi | 86% | 2841 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 63,454 psi | 88% | 2910 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 63,048 psi | 87% | 2917 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 63,324 psi | 87% | 2874 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 63,933 psi | 88% | 2884 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 64,701 psi | 89% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 61,975 psi | 85% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 62,004 psi | 86% | 2825 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 59,030 psi | 81% | 2913 fps | 99% |
| Somchem S335 | <<locked>> | 86% | 64,179 psi | 89% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 63,019 psi | 87% | 2854 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 64,745 psi | 89% | 2894 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 65,325 psi | 90% | 2910 fps | 98.1% |
| Somchem S365 | <<locked>> | 98% | 62,018 psi | 86% | 2930 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 59,988 psi | 83% | 2890 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 82% | 63,831 psi | 88% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 65,122 psi | 90% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 65,209 psi | 90% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 65,572 psi | 90% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 62,642 psi | 86% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 64,817 psi | 89% | 2923 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,953 psi | 72% | 2759 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 64,875 psi | 89% | 2854 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 63,382 psi | 87% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 63,701 psi | 88% | 2930 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,782 psi | 78% | 2887 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,305 psi | 79% | 2953 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 65,006 psi | 90% | 2890 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 61,757 psi | 85% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 62,468 psi | 86% | 2953 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,818 psi | 63% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 64,585 psi | 89% | 2897 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,492 psi | 78% | 2835 fps | 98.4% |
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 2015 | <<locked>> | 80% | 58,363 psi | 80% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 51,648 psi | 71% | 2635 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 59,712 psi | 82% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,327 psi | 68% | 2644 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,649 psi | 46% | 2421 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 48,907 psi | 67% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,289 psi | 51% | 2516 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 52,185 psi | 72% | 2871 fps | 95.6% |
| ADI APS 450 | <<locked>> | 80% | 58,581 psi | 81% | 2126 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 54,244 psi | 75% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,238 psi | 64% | 2621 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,437 psi | 57% | 2608 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 47,877 psi | 66% | 2759 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 56,347 psi | 78% | 2753 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 58,421 psi | 81% | 2717 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,995 psi | 70% | 2828 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,365 psi | 57% | 2608 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,775 psi | 65% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,777 psi | 69% | 2710 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,376 psi | 50% | 2523 fps | 98.4% |
| Alliant Reloder-17 | 48.2 gr | 80% | 41,263 psi | 57% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,901 psi | 56% | 2598 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,118 psi | 57% | 2648 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,672 psi | 37% | 2287 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,213 psi | 44% | 2457 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 82% | 30,429 psi | 42% | 2451 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,128 psi | 75% | 2779 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 43,149 psi | 60% | 2690 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 46,949 psi | 65% | 2654 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,118 psi | 57% | 2648 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,452 psi | 57% | 2533 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 57,479 psi | 79% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 56,449 psi | 78% | 2785 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 47,326 psi | 65% | 2664 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,218 psi | 54% | 2559 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,148 psi | 58% | 2582 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 51,387 psi | 71% | 2772 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,256 psi | 69% | 2753 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 54,897 psi | 76% | 2769 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,895 psi | 47% | 2421 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,764 psi | 71% | 2756 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,582 psi | 56% | 2707 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,130 psi | 53% | 2566 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 38% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,591 psi | 73% | 2723 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 55,796 psi | 77% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,646 psi | 67% | 2651 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,908 psi | 70% | 2680 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 37,130 psi | 51% | 2461 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,830 psi | 59% | 2562 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 35,868 psi | 49% | 2467 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 51,082 psi | 70% | 2736 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,980 psi | 69% | 2710 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 48,791 psi | 67% | 2792 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 56,347 psi | 78% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 54,694 psi | 75% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,272 psi | 73% | 2690 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,892 psi | 67% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,277 psi | 56% | 2510 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,551 psi | 53% | 2493 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 32,677 psi | 45% | 2395 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 53,055 psi | 73% | 2707 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,853 psi | 74% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,153 psi | 68% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,727 psi | 58% | 2595 fps | 95% |
| Norma MRP | <<locked>> | 88% | 37,637 psi | 52% | 2602 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,072 psi | 51% | 2510 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 49,443 psi | 68% | 2717 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,426 psi | 63% | 2740 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 35,955 psi | 50% | 2497 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 40,524 psi | 56% | 2621 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 56,391 psi | 78% | 2785 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 56,753 psi | 78% | 2799 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 60,481 psi | 83% | 2805 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,804 psi | 38% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,471 psi | 65% | 2651 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,867 psi | 74% | 2825 fps | 100% |
| ReloadSwiss RS 60 | 48.2 gr | 80% | 43,845 psi | 60% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,999 psi | 51% | 2533 fps | 98% |
| ReloadSwiss RS 70 | 48.9 gr | 80% | 35,955 psi | 50% | 2536 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,405 psi | 52% | 2625 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 57,246 psi | 79% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 50,734 psi | 70% | 2661 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,237 psi | 61% | 2602 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,571 psi | 63% | 2638 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 42,801 psi | 59% | 2641 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 41,452 psi | 57% | 2533 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,277 psi | 56% | 2510 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,694 psi | 75% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,892 psi | 67% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,551 psi | 53% | 2493 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,324 psi | 63% | 2654 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 55,506 psi | 77% | 2769 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,736 psi | 73% | 2733 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,780 psi | 74% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,513 psi | 63% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,436 psi | 54% | 2457 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,395 psi | 58% | 2635 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 53,577 psi | 74% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 55,027 psi | 76% | 2749 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,527 psi | 61% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,096 psi | 69% | 2690 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,678 psi | 46% | 2470 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,087 psi | 53% | 2513 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 60,118 psi | 83% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 54,360 psi | 75% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,836 psi | 70% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,981 psi | 70% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,525 psi | 59% | 2533 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,493 psi | 53% | 2510 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 39,929 psi | 55% | 2543 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 56,782 psi | 78% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 49,255 psi | 68% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,927 psi | 52% | 2510 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,327 psi | 40% | 2359 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 96% | 49,995 psi | 69% | 2831 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,608 psi | 52% | 2480 fps | 99.7% |
| Winchester 748 | <<locked>> | 80% | 57,827 psi | 80% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 39,450 psi | 54% | 2566 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,121 psi | 35% | 2310 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,794 psi | 73% | 2740 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,757 psi | 59% | 2605 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 122 powders for .270 Win. Ackley Improved loaded with the .277 | 150gr | Berger VLD Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,722 fps to 3,009 fps. Accurate 3100 gives the best case fill at 100 %, and 122 of the 122 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (500 MPa), the top charges use 50–90 %, 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, Accurate MAGPRO, ADI AR 2209 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. Ackley Improved 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.