Load Specifications
Bullet:.277 | 130gr | Swift A-Frame
Bullet Manufacturer:Swift
Bullet Weight:130 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:1:12.5
Load data in caliber .270 Win. Ackley Improved with .277 | 130gr | Swift A-Frame bullet and 117 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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>> | 84% | 62,250 psi | 86% | 2949 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 65,209 psi | 90% | 3038 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 62,221 psi | 86% | 2979 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 63,889 psi | 88% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 64,368 psi | 89% | 3061 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,719 psi | 69% | 2917 fps | 98.4% |
| Accurate 4064 | <<locked>> | 90% | 62,439 psi | 86% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 63,947 psi | 88% | 3156 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 64,281 psi | 89% | 2375 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 61,699 psi | 85% | 3074 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 62,845 psi | 87% | 3074 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,739 psi | 78% | 3071 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 64,121 psi | 88% | 3068 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 62,366 psi | 86% | 2982 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 62,714 psi | 86% | 3215 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 63,599 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 64,977 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 64,078 psi | 88% | 3123 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 63,962 psi | 88% | 3205 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 61,960 psi | 85% | 3182 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,014 psi | 77% | 3061 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,356 psi | 68% | 2989 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,702 psi | 64% | 2940 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,741 psi | 56% | 2838 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,171 psi | 73% | 3130 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 62,004 psi | 86% | 3094 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 65,137 psi | 90% | 3120 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,356 psi | 68% | 2989 fps | 96% |
| Bofors RP7 | <<locked>> | 96% | 64,020 psi | 88% | 3097 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 65,267 psi | 90% | 3041 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 64,484 psi | 89% | 3104 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 63,092 psi | 87% | 3163 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 65,079 psi | 90% | 3051 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 61,685 psi | 85% | 3087 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 62,134 psi | 86% | 3153 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 94% | 61,815 psi | 85% | 3107 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 86% | 62,381 psi | 86% | 3084 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 60,292 psi | 83% | 3068 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 62,772 psi | 87% | 3120 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 63,222 psi | 87% | 3199 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 50% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 63,498 psi | 88% | 3081 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 63,193 psi | 87% | 3058 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 62,236 psi | 86% | 3058 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 61,714 psi | 85% | 3045 fps | 99.2% |
| IMR 4198 | <<locked>> | 82% | 64,034 psi | 88% | 2943 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 64,745 psi | 89% | 3127 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 61,902 psi | 85% | 3071 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 63,860 psi | 88% | 3136 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 61,743 psi | 85% | 3100 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 64,121 psi | 88% | 3068 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 65,224 psi | 90% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 62,555 psi | 86% | 3048 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 64,179 psi | 89% | 3045 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 62,207 psi | 86% | 3045 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 61,670 psi | 85% | 3064 fps | 99.8% |
| Lovex S070 | <<locked>> | 98% | 63,135 psi | 87% | 3107 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,118 psi | 57% | 2756 fps | 96.5% |
| Norma 201 | <<locked>> | 88% | 63,860 psi | 88% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 88% | 64,730 psi | 89% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 90% | 63,251 psi | 87% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 98% | 62,468 psi | 86% | 3133 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 52,518 psi | 72% | 3081 fps | 98.1% |
| Norma URP | <<locked>> | 98% | 61,757 psi | 85% | 3130 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 64,759 psi | 89% | 3140 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 64,803 psi | 89% | 3189 fps | 99.9% |
| Ramshot TAC | <<locked>> | 86% | 64,672 psi | 89% | 3100 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 64,832 psi | 89% | 3114 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 65,108 psi | 90% | 3074 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 51% | 1903 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 63,440 psi | 87% | 3041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 65,586 psi | 90% | 3120 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 61,583 psi | 85% | 3150 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 61,641 psi | 85% | 3179 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 63,730 psi | 88% | 3176 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 62,410 psi | 86% | 3212 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 64,527 psi | 89% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 64,774 psi | 89% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 64,977 psi | 90% | 3110 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,566 psi | 81% | 3041 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,984 psi | 76% | 3041 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 96% | 64,020 psi | 88% | 3097 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 61,670 psi | 85% | 3064 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 62,555 psi | 86% | 3048 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 62,207 psi | 86% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 63,135 psi | 87% | 3107 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 62,787 psi | 87% | 3120 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 63,614 psi | 88% | 3081 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 64,034 psi | 88% | 3097 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 64,919 psi | 90% | 2986 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 62,033 psi | 86% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 62,091 psi | 86% | 3018 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,476 psi | 75% | 3035 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 61,873 psi | 85% | 3048 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 64,324 psi | 89% | 2979 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 63,193 psi | 87% | 3068 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 64,614 psi | 89% | 3104 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 61,090 psi | 84% | 3041 fps | 96.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 60,771 psi | 84% | 3130 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,753 psi | 77% | 3022 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 84% | 64,397 psi | 89% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 65,238 psi | 90% | 2963 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 65,035 psi | 90% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 65,572 psi | 90% | 3031 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 62,453 psi | 86% | 3025 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 64,629 psi | 89% | 3127 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,153 psi | 66% | 2874 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 86% | 65,209 psi | 90% | 3071 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 63,744 psi | 88% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 63,280 psi | 87% | 3130 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,112 psi | 72% | 3022 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 64,875 psi | 89% | 3094 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 61,554 psi | 85% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 62,134 psi | 86% | 3153 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,989 psi | 58% | 2976 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 64,382 psi | 89% | 3104 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,257 psi | 72% | 2953 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 2015 | <<locked>> | 80% | 55,013 psi | 76% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 60,916 psi | 84% | 2982 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,283 psi | 67% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 55,883 psi | 77% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,427 psi | 64% | 2769 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 37,724 psi | 52% | 2680 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,672 psi | 63% | 2789 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,258 psi | 47% | 2618 fps | 96% |
| ADI APS 450 | <<locked>> | 80% | 58,073 psi | 80% | 2287 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 51,053 psi | 70% | 2910 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,381 psi | 60% | 2753 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 49,980 psi | 69% | 2953 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,127 psi | 73% | 2910 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,824 psi | 76% | 2887 fps | 100% |
| Alliant Power Pro 2000-MR | 50.9 gr | 80% | 47,311 psi | 65% | 2963 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,526 psi | 60% | 2779 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 61,250 psi | 84% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,615 psi | 64% | 2848 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,910 psi | 47% | 2631 fps | 96.1% |
| Alliant Reloder-17 | 50.1 gr | 80% | 38,014 psi | 52% | 2759 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,122 psi | 64% | 2881 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,209 psi | 64% | 2930 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,863 psi | 41% | 2539 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,042 psi | 50% | 2717 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,403 psi | 47% | 2723 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,633 psi | 70% | 2917 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 43,642 psi | 60% | 2785 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 46,209 psi | 64% | 2930 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,077 psi | 61% | 2759 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,534 psi | 75% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,823 psi | 73% | 2940 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 58,827 psi | 81% | 3104 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 61,032 psi | 84% | 2999 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,092 psi | 61% | 2789 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 41,568 psi | 57% | 2785 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 47,935 psi | 66% | 2874 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 51,576 psi | 71% | 2920 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,430 psi | 43% | 2526 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,979 psi | 66% | 2894 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 43,903 psi | 61% | 2864 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 37% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,501 psi | 68% | 2871 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,011 psi | 72% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,614 psi | 63% | 2789 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,022 psi | 66% | 2815 fps | 97.2% |
| IMR 4198 | <<locked>> | 80% | 60,669 psi | 84% | 2900 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,585 psi | 61% | 2792 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,772 psi | 59% | 2736 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,098 psi | 46% | 2572 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 47,790 psi | 66% | 2877 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,127 psi | 73% | 2910 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 60,945 psi | 84% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,184 psi | 71% | 2887 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,285 psi | 69% | 2838 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,745 psi | 63% | 2789 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,797 psi | 52% | 2628 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 40,930 psi | 56% | 2717 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 38,595 psi | 53% | 2700 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,053 psi | 69% | 2858 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,444 psi | 70% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,963 psi | 63% | 2835 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 47,413 psi | 65% | 2884 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 42,525 psi | 59% | 2884 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,330 psi | 47% | 2615 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 45,992 psi | 63% | 2851 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,971 psi | 52% | 2713 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 53,330 psi | 74% | 2930 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,214 psi | 73% | 2949 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 57,101 psi | 79% | 2963 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 38% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 59,248 psi | 82% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,295 psi | 61% | 2772 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,125 psi | 69% | 2966 fps | 99.7% |
| ReloadSwiss RS 60 | 50.1 gr | 80% | 40,408 psi | 56% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,953 psi | 47% | 2631 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,766 psi | 49% | 2694 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 54,012 psi | 74% | 2887 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,601 psi | 66% | 2808 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,147 psi | 57% | 2730 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 51,677 psi | 71% | 2930 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 48,022 psi | 66% | 2920 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,077 psi | 61% | 2759 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,797 psi | 52% | 2628 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,184 psi | 71% | 2887 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,745 psi | 63% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,930 psi | 56% | 2717 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,264 psi | 58% | 2782 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,953 psi | 72% | 2907 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,647 psi | 68% | 2881 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,865 psi | 70% | 2792 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,830 psi | 59% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,061 psi | 58% | 2680 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,572 psi | 66% | 2913 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 57,841 psi | 80% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 50,720 psi | 70% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,517 psi | 71% | 2894 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,698 psi | 57% | 2733 fps | 99.4% |
| Somchem S361 | <<locked>> | 98% | 57,043 psi | 79% | 2979 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 30,922 psi | 43% | 2569 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 42,902 psi | 59% | 2789 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 57,058 psi | 79% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 51,387 psi | 71% | 2782 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,543 psi | 66% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,935 psi | 66% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,711 psi | 55% | 2661 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,665 psi | 49% | 2618 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 45,063 psi | 62% | 2818 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 53,417 psi | 74% | 2907 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,122 psi | 64% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,114 psi | 48% | 2615 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 30,545 psi | 42% | 2559 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,998 psi | 48% | 2589 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 53,882 psi | 74% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,785 psi | 58% | 2792 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,181 psi | 39% | 2562 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,385 psi | 68% | 2884 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,776 psi | 67% | 2890 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 117 powders for .270 Win. Ackley Improved loaded with the .277 | 130gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,215 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,215 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 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 130.0 gr projectile in 0.277" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. Ackley Improved with the .277 | 130gr | Swift A-Frame 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.