Load Specifications
Bullet Manufacturer:Alaska Bullet Works
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:1:11.0
Load data in caliber .270 Win. Ackley Improved with .277 | 150gr | Alaska Bullet Works Kodiak SP SPBC bullet and 121 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% | 62,134 psi | 86% | 2733 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 62,395 psi | 86% | 2769 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 63,904 psi | 88% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 64,165 psi | 88% | 2861 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,099 psi | 75% | 2795 fps | 99.7% |
| Accurate 4064 | <<locked>> | 88% | 62,888 psi | 87% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 64,542 psi | 89% | 2953 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,115 psi | 77% | 2936 fps | 96.5% |
| ADI APS 450 | <<locked>> | 86% | 64,455 psi | 89% | 2205 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 65,340 psi | 90% | 2907 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 62,598 psi | 86% | 2864 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 60,858 psi | 84% | 2940 fps | 99% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,795 psi | 76% | 2881 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 63,904 psi | 88% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 62,410 psi | 86% | 2762 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 62,874 psi | 87% | 2999 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 63,802 psi | 88% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 64,179 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 64,411 psi | 89% | 2995 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 62,468 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 60,249 psi | 83% | 2930 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,635 psi | 74% | 2877 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,589 psi | 70% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,976 psi | 61% | 2736 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 58,595 psi | 81% | 3009 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 61,714 psi | 85% | 2881 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,994 psi | 68% | 2799 fps | 97.3% |
| Bofors RP3 | <<locked>> | 90% | 65,296 psi | 90% | 2907 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,635 psi | 74% | 2877 fps | 98.3% |
| Bofors RP7 | <<locked>> | 94% | 63,860 psi | 88% | 2897 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 64,730 psi | 89% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 64,397 psi | 89% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 65,470 psi | 90% | 2927 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 62,265 psi | 86% | 2949 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 92% | 61,772 psi | 85% | 2907 fps | 99.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 58,566 psi | 81% | 2881 fps | 97.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 57,566 psi | 79% | 2864 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 62,323 psi | 86% | 2867 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 65,079 psi | 90% | 2913 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 62,932 psi | 87% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,221 psi | 60% | 2766 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 94% | 63,599 psi | 88% | 2999 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 50% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 63,454 psi | 88% | 2867 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 63,411 psi | 87% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 62,192 psi | 86% | 2848 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 65,369 psi | 90% | 2890 fps | 99.9% |
| IMR 4350 | <<locked>> | 98% | 65,021 psi | 90% | 2930 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 61,656 psi | 85% | 2867 fps | 99.7% |
| IMR 4831 | <<locked>> | 98% | 64,092 psi | 88% | 2930 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 61,685 psi | 85% | 2887 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 60,002 psi | 83% | 2867 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,141 psi | 72% | 2851 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 84% | 63,904 psi | 88% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 62,279 psi | 86% | 2831 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 63,715 psi | 88% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 62,337 psi | 86% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 61,685 psi | 85% | 2861 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 63,585 psi | 88% | 2910 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,744 psi | 62% | 2644 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 63,686 psi | 88% | 2844 fps | 100% |
| Norma 202 | <<locked>> | 86% | 64,672 psi | 89% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 88% | 63,367 psi | 87% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 96% | 62,671 psi | 86% | 2940 fps | 99.1% |
| Norma MRPᴾ | <<locked>> | 100% | 56,840 psi | 78% | 2959 fps | 99.6% |
| Norma URP | <<locked>> | 96% | 62,468 psi | 86% | 2930 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 64,890 psi | 89% | 2930 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,301 psi | 72% | 2864 fps | 97% |
| Ramshot Hunter | <<locked>> | 98% | 65,108 psi | 90% | 2986 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,644 psi | 64% | 2743 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 64,092 psi | 88% | 2890 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 84% | 64,672 psi | 89% | 2900 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 64,527 psi | 89% | 2858 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,130 psi | 51% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 65,412 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 61,598 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 61,902 psi | 85% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 64,223 psi | 89% | 2972 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 62,453 psi | 86% | 3005 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,931 psi | 59% | 2756 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 84% | 64,571 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 64,672 psi | 89% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 65,122 psi | 90% | 2897 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 62,526 psi | 86% | 2907 fps | 98.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 59,335 psi | 82% | 2913 fps | 99% |
| Rottweil R 907 | <<locked>> | 94% | 63,860 psi | 88% | 2897 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 61,685 psi | 85% | 2861 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 62,279 psi | 86% | 2831 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 62,337 psi | 86% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 63,585 psi | 88% | 2910 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 62,859 psi | 87% | 2910 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 63,440 psi | 87% | 2874 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 63,715 psi | 88% | 2881 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 64,498 psi | 89% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 61,786 psi | 85% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 61,815 psi | 85% | 2822 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 58,813 psi | 81% | 2910 fps | 98.9% |
| Somchem S335 | <<locked>> | 86% | 63,976 psi | 88% | 2766 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 62,830 psi | 87% | 2851 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 64,513 psi | 89% | 2890 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 65,137 psi | 90% | 2907 fps | 98% |
| Somchem S365 | <<locked>> | 98% | 61,815 psi | 85% | 2927 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 60,133 psi | 83% | 2890 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 82% | 63,962 psi | 88% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 64,905 psi | 90% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 64,948 psi | 90% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 65,340 psi | 90% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 62,439 psi | 86% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 64,948 psi | 90% | 2923 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,069 psi | 72% | 2759 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 64,701 psi | 89% | 2851 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 63,527 psi | 88% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 63,846 psi | 88% | 2930 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,594 psi | 78% | 2884 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,145 psi | 79% | 2946 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 64,817 psi | 89% | 2887 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 61,554 psi | 85% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 62,627 psi | 86% | 2953 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,672 psi | 63% | 2867 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 64,397 psi | 89% | 2890 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,637 psi | 78% | 2835 fps | 98.5% |
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 2015 | <<locked>> | 80% | 58,465 psi | 81% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 51,735 psi | 71% | 2635 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 59,814 psi | 82% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,414 psi | 68% | 2644 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 33,504 psi | 46% | 2415 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,008 psi | 68% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,347 psi | 52% | 2513 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 51,996 psi | 72% | 2867 fps | 95.5% |
| ADI APS 450 | <<locked>> | 80% | 58,334 psi | 80% | 2123 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 54,389 psi | 75% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 46,079 psi | 64% | 2615 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 41,263 psi | 57% | 2605 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 47,979 psi | 66% | 2762 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 56,434 psi | 78% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 58,552 psi | 81% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,082 psi | 70% | 2828 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,586 psi | 64% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,864 psi | 69% | 2710 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,434 psi | 50% | 2523 fps | 98.4% |
| Alliant Reloder-17 | 48.1 gr | 80% | 41,118 psi | 57% | 2644 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,988 psi | 57% | 2598 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,988 psi | 57% | 2644 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,701 psi | 37% | 2287 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,097 psi | 44% | 2454 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 82% | 30,501 psi | 42% | 2451 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,259 psi | 75% | 2779 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 43,250 psi | 60% | 2690 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,050 psi | 65% | 2654 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,988 psi | 57% | 2644 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,307 psi | 57% | 2526 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 57,566 psi | 79% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 56,550 psi | 78% | 2785 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 47,413 psi | 65% | 2664 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,291 psi | 54% | 2559 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,221 psi | 58% | 2579 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 51,213 psi | 71% | 2766 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,372 psi | 69% | 2753 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 54,984 psi | 76% | 2769 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,953 psi | 47% | 2421 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,576 psi | 71% | 2753 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,437 psi | 56% | 2700 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,218 psi | 53% | 2569 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 38% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,402 psi | 72% | 2717 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 55,593 psi | 77% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,472 psi | 67% | 2648 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,705 psi | 70% | 2677 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 39,552 psi | 55% | 2513 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,699 psi | 59% | 2556 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 35,911 psi | 50% | 2467 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 51,155 psi | 71% | 2736 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,806 psi | 69% | 2707 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 48,646 psi | 67% | 2789 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 56,434 psi | 78% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 54,795 psi | 76% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 53,055 psi | 73% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,718 psi | 67% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,350 psi | 56% | 2513 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 38,624 psi | 53% | 2493 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 32,532 psi | 45% | 2392 fps | 95% |
| Norma 201 | <<locked>> | 80% | 53,185 psi | 73% | 2707 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,679 psi | 74% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,255 psi | 68% | 2697 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,611 psi | 57% | 2592 fps | 95% |
| Norma MRP | <<locked>> | 88% | 37,724 psi | 52% | 2602 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,144 psi | 51% | 2510 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 49,588 psi | 68% | 2717 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,542 psi | 63% | 2740 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,027 psi | 50% | 2497 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 40,422 psi | 56% | 2618 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 56,478 psi | 78% | 2785 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 56,565 psi | 78% | 2795 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 60,582 psi | 84% | 2808 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,833 psi | 38% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,268 psi | 65% | 2648 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 54,012 psi | 74% | 2825 fps | 100% |
| ReloadSwiss RS 60 | 48.1 gr | 80% | 43,700 psi | 60% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,072 psi | 51% | 2530 fps | 98% |
| ReloadSwiss RS 70 | 48.9 gr | 80% | 36,027 psi | 50% | 2536 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,289 psi | 51% | 2618 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 57,363 psi | 79% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 50,546 psi | 70% | 2657 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,309 psi | 61% | 2602 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,687 psi | 63% | 2641 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 42,612 psi | 59% | 2635 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,307 psi | 57% | 2526 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,350 psi | 56% | 2513 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,795 psi | 76% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,718 psi | 67% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,624 psi | 53% | 2493 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,397 psi | 63% | 2654 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 55,274 psi | 76% | 2766 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,823 psi | 73% | 2733 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,925 psi | 74% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,600 psi | 63% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,523 psi | 55% | 2457 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,206 psi | 58% | 2628 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 53,664 psi | 74% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 55,172 psi | 76% | 2753 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,614 psi | 62% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,922 psi | 69% | 2684 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,533 psi | 46% | 2467 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,116 psi | 53% | 2513 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 60,234 psi | 83% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 54,462 psi | 75% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,923 psi | 70% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,068 psi | 70% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,598 psi | 59% | 2533 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,566 psi | 53% | 2510 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 40,016 psi | 55% | 2546 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 56,884 psi | 78% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 49,327 psi | 68% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,000 psi | 52% | 2510 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 29,385 psi | 41% | 2359 fps | 96.3% |
| Vihtavuori N560 | <<locked>> | 96% | 50,111 psi | 69% | 2831 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,681 psi | 52% | 2480 fps | 99.7% |
| Winchester 748 | <<locked>> | 80% | 57,595 psi | 79% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 39,291 psi | 54% | 2559 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,179 psi | 35% | 2313 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,881 psi | 73% | 2740 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 42,859 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 121 powders for .270 Win. Ackley Improved loaded with the .277 | 150gr | Alaska Bullet Works Kodiak SP SPBC. 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 121 of the 121 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 1:11.0 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 | Alaska Bullet Works Kodiak SP SPBC 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.