Load Specifications
Bullet Manufacturer:Hasler
Bullet Weight:125 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:1:10.0
Load data in caliber .270 Win. Ackley Improved with .277 | 125gr | Hasler Hunting bullet and 113 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>> | 88% | 65,267 psi | 90% | 3038 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 64,426 psi | 89% | 3081 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 64,687 psi | 89% | 3068 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 63,063 psi | 87% | 3100 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 63,976 psi | 88% | 3097 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,150 psi | 61% | 2861 fps | 96.7% |
| Accurate 4064 | <<locked>> | 94% | 64,455 psi | 89% | 3120 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 61,917 psi | 85% | 3179 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 62,830 psi | 87% | 2976 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 63,367 psi | 87% | 3012 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 64,136 psi | 88% | 2398 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 64,861 psi | 89% | 3166 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 62,018 psi | 86% | 3110 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 63,396 psi | 87% | 3107 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 65,383 psi | 90% | 3074 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 62,221 psi | 86% | 3179 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 61,757 psi | 85% | 3255 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 62,323 psi | 86% | 3133 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 64,600 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 63,179 psi | 87% | 3163 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 58,682 psi | 81% | 3182 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 98% | 65,021 psi | 90% | 3278 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,872 psi | 58% | 2894 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,427 psi | 65% | 3074 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 62,845 psi | 87% | 2972 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 61,308 psi | 85% | 3133 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 63,628 psi | 88% | 3153 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 63,164 psi | 87% | 3127 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 65,122 psi | 90% | 3087 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 63,933 psi | 88% | 3146 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 62,294 psi | 86% | 3205 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 64,614 psi | 89% | 3100 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 61,743 psi | 85% | 3074 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 64,643 psi | 89% | 3176 fps | 99.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 64,861 psi | 89% | 3235 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 98% | 65,093 psi | 90% | 3196 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 90% | 65,586 psi | 90% | 3179 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,911 psi | 76% | 3041 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 61,786 psi | 85% | 3159 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 62,018 psi | 86% | 3225 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 49% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 62,917 psi | 87% | 3123 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 61,888 psi | 85% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 65,427 psi | 90% | 3150 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 65,427 psi | 90% | 3140 fps | 99.2% |
| IMR 4198 | <<locked>> | 84% | 64,034 psi | 88% | 2995 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 60,002 psi | 83% | 3100 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 98% | 65,325 psi | 90% | 3163 fps | 99.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 58,044 psi | 80% | 3107 fps | 99.9% |
| IMR 4895 | <<locked>> | 92% | 64,861 psi | 89% | 3196 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 63,396 psi | 87% | 3107 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 64,484 psi | 89% | 3097 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 65,528 psi | 90% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 63,744 psi | 88% | 3084 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 65,050 psi | 90% | 3136 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 64,411 psi | 89% | 3146 fps | 99.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 62,091 psi | 86% | 3136 fps | 99% |
| Norma 201 | <<locked>> | 90% | 63,193 psi | 87% | 3104 fps | 100% |
| Norma 202 | <<locked>> | 90% | 64,179 psi | 89% | 3100 fps | 100% |
| Norma 203B | <<locked>> | 92% | 62,323 psi | 86% | 3146 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 61,395 psi | 85% | 3159 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 47,166 psi | 65% | 3025 fps | 96.2% |
| Norma URPᴾ | <<locked>> | 100% | 60,452 psi | 83% | 3163 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 92% | 63,570 psi | 88% | 3176 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 59,292 psi | 82% | 3159 fps | 99.2% |
| Ramshot TAC | <<locked>> | 88% | 64,281 psi | 89% | 3143 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 64,150 psi | 88% | 3156 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 64,658 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 50% | 1923 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 63,019 psi | 87% | 3091 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 64,817 psi | 89% | 3156 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 64,600 psi | 89% | 3241 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 64,614 psi | 89% | 3271 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 61,960 psi | 85% | 3202 fps | 99.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 61,192 psi | 84% | 3238 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 88% | 63,556 psi | 88% | 3074 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 63,788 psi | 88% | 3100 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 63,469 psi | 88% | 3146 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 63,164 psi | 87% | 3127 fps | 98.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 64,411 psi | 89% | 3146 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 65,528 psi | 90% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 65,050 psi | 90% | 3136 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 62,091 psi | 86% | 3136 fps | 99% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 62,787 psi | 87% | 3064 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 64,339 psi | 89% | 2726 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 61,598 psi | 85% | 3156 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 62,018 psi | 86% | 3025 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 63,179 psi | 87% | 3123 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 63,353 psi | 87% | 3136 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 64,774 psi | 89% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 65,485 psi | 90% | 3025 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 65,412 psi | 90% | 3107 fps | 99.1% |
| Somchem S321 | <<locked>> | 84% | 61,322 psi | 85% | 3091 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 63,904 psi | 88% | 3025 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 62,526 psi | 86% | 3107 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 63,367 psi | 87% | 3140 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,882 psi | 76% | 3104 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,473 psi | 70% | 2976 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 86% | 64,020 psi | 88% | 2986 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 65,006 psi | 90% | 3012 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 63,875 psi | 88% | 3054 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 64,846 psi | 89% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 65,325 psi | 90% | 3110 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 63,208 psi | 87% | 3156 fps | 100% |
| Vihtavuori N530 | <<locked>> | 88% | 64,571 psi | 89% | 3114 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 62,772 psi | 87% | 3074 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 62,178 psi | 86% | 3163 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,615 psi | 64% | 2976 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 63,933 psi | 88% | 3130 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 65,079 psi | 90% | 3163 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 65,238 psi | 90% | 3241 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,608 psi | 52% | 2904 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 63,657 psi | 88% | 3146 fps | 100% |
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% | 50,937 psi | 70% | 2848 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 56,043 psi | 77% | 2969 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,308 psi | 60% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,082 psi | 70% | 2930 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,643 psi | 63% | 2795 fps | 95% |
| Accurate 3100 | <<locked>> | 98% | 41,017 psi | 57% | 2799 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,017 psi | 57% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,925 psi | 48% | 2684 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 59,146 psi | 82% | 2927 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 59,640 psi | 82% | 2963 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,044 psi | 80% | 2313 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 47,108 psi | 65% | 2887 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,132 psi | 55% | 2726 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,255 psi | 68% | 2894 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,125 psi | 69% | 2877 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 58,059 psi | 80% | 3120 fps | 100% |
| Alliant Power Pro 2000-MR | 49.3 gr | 80% | 43,163 psi | 60% | 2923 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,900 psi | 55% | 2753 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 80% | 57,058 psi | 79% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,699 psi | 59% | 2818 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,128 psi | 48% | 2707 fps | 95.8% |
| Alliant Reloder-17 | 48.6 gr | 80% | 34,490 psi | 48% | 2713 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,414 psi | 42% | 2595 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,491 psi | 49% | 2792 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 58,784 psi | 81% | 2923 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,586 psi | 64% | 2894 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,465 psi | 54% | 2749 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 45,905 psi | 63% | 2838 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,836 psi | 70% | 2881 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,414 psi | 67% | 2917 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 54,041 psi | 75% | 3081 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 56,695 psi | 78% | 2995 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 57,798 psi | 80% | 3022 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,263 psi | 56% | 2756 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,221 psi | 60% | 2867 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 90% | 50,154 psi | 69% | 2956 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,558 psi | 66% | 2897 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,066 psi | 41% | 2533 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,932 psi | 61% | 2871 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 46,151 psi | 64% | 2953 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 36% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,788 psi | 63% | 2848 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,747 psi | 66% | 2894 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,163 psi | 58% | 2766 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,599 psi | 62% | 2789 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 56,869 psi | 78% | 2904 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 46,499 psi | 64% | 2871 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,846 psi | 62% | 2822 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 33,881 psi | 47% | 2641 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 43,758 psi | 60% | 2851 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,255 psi | 68% | 2894 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 56,086 psi | 77% | 2986 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,485 psi | 64% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,007 psi | 65% | 2822 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,047 psi | 58% | 2769 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,117 psi | 54% | 2703 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 42,221 psi | 58% | 2789 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 45,919 psi | 63% | 2835 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,615 psi | 64% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,061 psi | 58% | 2805 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 53,345 psi | 74% | 3035 fps | 95.8% |
| Norma MRP | <<locked>> | 98% | 43,976 psi | 61% | 2959 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 35,302 psi | 49% | 2690 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 41,901 psi | 58% | 2818 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 39,421 psi | 54% | 2792 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,211 psi | 68% | 2904 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,066 psi | 68% | 2927 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,069 psi | 73% | 2946 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 37% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 55,230 psi | 76% | 2979 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,770 psi | 56% | 2743 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,484 psi | 63% | 2933 fps | 98.9% |
| ReloadSwiss RS 60 | 48.6 gr | 80% | 36,796 psi | 51% | 2789 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,954 psi | 48% | 2703 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 37,202 psi | 51% | 2772 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 49,821 psi | 69% | 2874 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,845 psi | 60% | 2785 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,072 psi | 51% | 2690 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 45,905 psi | 63% | 2838 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,117 psi | 54% | 2703 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,485 psi | 64% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,047 psi | 58% | 2769 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,221 psi | 58% | 2789 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 58,349 psi | 80% | 3002 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 61,017 psi | 84% | 2687 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,276 psi | 53% | 2746 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 58,233 psi | 80% | 2976 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,688 psi | 66% | 2877 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,614 psi | 63% | 2854 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,311 psi | 65% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,508 psi | 54% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,019 psi | 61% | 2762 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 53,490 psi | 74% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,876 psi | 65% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,384 psi | 65% | 2871 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,855 psi | 52% | 2697 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 27,572 psi | 38% | 2513 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 47,369 psi | 65% | 2920 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 53,345 psi | 74% | 2848 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,761 psi | 66% | 2776 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,511 psi | 60% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,048 psi | 61% | 2772 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,056 psi | 50% | 2631 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 34,505 psi | 48% | 2638 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,429 psi | 68% | 2890 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,424 psi | 59% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,332 psi | 50% | 2694 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 33,011 psi | 46% | 2677 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,879 psi | 44% | 2549 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 49,617 psi | 68% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,221 psi | 60% | 2867 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,647 psi | 42% | 2687 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,252 psi | 62% | 2858 fps | 99.6% |
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 132 powders for .270 Win. Ackley Improved loaded with the .277 | 125gr | Hasler Hunting. Alliant Reloder-17 delivers the highest muzzle velocity at 3,278 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,278 fps. Accurate 3100 gives the best case fill at 100 %, and 132 of the 132 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (500 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.277" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. Ackley Improved with the .277 | 125gr | Hasler Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.