Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:120 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:1:11.5
Load data in caliber .270 Win. Ackley Improved with .270 | 120gr | MRR Green 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>> | 86% | 62,424 psi | 86% | 3064 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 65,282 psi | 90% | 3153 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 61,989 psi | 85% | 3094 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 64,107 psi | 88% | 3169 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 64,934 psi | 90% | 3166 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,339 psi | 63% | 2933 fps | 96.6% |
| Accurate 4064 | <<locked>> | 92% | 62,062 psi | 86% | 3146 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 63,019 psi | 87% | 3255 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 63,599 psi | 88% | 3048 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 64,107 psi | 88% | 3084 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 63,991 psi | 88% | 2454 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 61,714 psi | 85% | 3186 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 62,671 psi | 86% | 3182 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 64,295 psi | 89% | 3182 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 62,221 psi | 86% | 3097 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 63,092 psi | 87% | 3255 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 62,613 psi | 86% | 3327 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 63,440 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 65,340 psi | 90% | 3114 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 64,020 psi | 88% | 3235 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 59,480 psi | 82% | 3251 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 61,641 psi | 85% | 3294 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,033 psi | 59% | 2966 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,675 psi | 67% | 3150 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 63,628 psi | 88% | 3041 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 62,236 psi | 86% | 3205 fps | 100% |
| Bofors RP3 | <<locked>> | 94% | 64,890 psi | 89% | 3228 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 64,121 psi | 88% | 3199 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 62,062 psi | 86% | 3107 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 64,759 psi | 89% | 3219 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 63,019 psi | 87% | 3278 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 65,340 psi | 90% | 3173 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 62,685 psi | 86% | 3146 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 61,569 psi | 85% | 3192 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 98% | 61,685 psi | 85% | 3251 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 96% | 61,714 psi | 85% | 3205 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 88% | 62,366 psi | 86% | 3196 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,840 psi | 77% | 3114 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 62,772 psi | 87% | 3235 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 63,092 psi | 87% | 3301 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 49% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 63,686 psi | 88% | 3196 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 63,034 psi | 87% | 3173 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 62,337 psi | 86% | 3166 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 61,989 psi | 85% | 3150 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 64,629 psi | 89% | 3064 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 60,713 psi | 84% | 3169 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 62,076 psi | 86% | 3176 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 59,292 psi | 82% | 3182 fps | 99.9% |
| IMR 4895 | <<locked>> | 90% | 61,612 psi | 85% | 3212 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 64,295 psi | 89% | 3182 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 65,601 psi | 90% | 3169 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 62,279 psi | 86% | 3156 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 64,585 psi | 89% | 3159 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 62,250 psi | 86% | 3159 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 61,670 psi | 85% | 3166 fps | 99.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 63,034 psi | 87% | 3205 fps | 99% |
| Norma 201 | <<locked>> | 90% | 64,020 psi | 88% | 3176 fps | 100% |
| Norma 202 | <<locked>> | 90% | 64,832 psi | 89% | 3173 fps | 100% |
| Norma 203B | <<locked>> | 92% | 63,164 psi | 87% | 3219 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 62,236 psi | 86% | 3232 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 48,182 psi | 66% | 3097 fps | 96.2% |
| Norma URPᴾ | <<locked>> | 100% | 61,293 psi | 85% | 3232 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 92% | 64,788 psi | 89% | 3251 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 60,249 psi | 83% | 3232 fps | 99.2% |
| Ramshot TAC | <<locked>> | 88% | 65,180 psi | 90% | 3215 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 65,108 psi | 90% | 3228 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 61,482 psi | 85% | 3133 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 50% | 1972 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 63,657 psi | 88% | 3159 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 61,612 psi | 85% | 3169 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 61,134 psi | 84% | 3255 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 61,017 psi | 84% | 3291 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 63,019 psi | 87% | 3278 fps | 99.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 62,004 psi | 86% | 3310 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 88% | 64,687 psi | 89% | 3150 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 64,556 psi | 89% | 3169 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 64,701 psi | 89% | 3219 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 64,121 psi | 88% | 3199 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 61,670 psi | 85% | 3166 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 62,279 psi | 86% | 3156 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 62,250 psi | 86% | 3159 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 63,034 psi | 87% | 3205 fps | 99% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 63,353 psi | 87% | 3133 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 64,614 psi | 89% | 2789 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 62,482 psi | 86% | 3228 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 62,613 psi | 86% | 3097 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 63,991 psi | 88% | 3192 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 64,353 psi | 89% | 3212 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 65,441 psi | 90% | 3104 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 62,352 psi | 86% | 3051 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 62,410 psi | 86% | 3123 fps | 98.7% |
| Somchem S321 | <<locked>> | 84% | 62,236 psi | 86% | 3166 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 64,571 psi | 89% | 3094 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 63,483 psi | 88% | 3176 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 64,165 psi | 88% | 3212 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,840 psi | 77% | 3176 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,634 psi | 71% | 3048 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 86% | 64,861 psi | 89% | 3058 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 65,586 psi | 90% | 3081 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 64,672 psi | 89% | 3127 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 61,598 psi | 85% | 3097 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 62,410 psi | 86% | 3136 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 63,976 psi | 88% | 3225 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 88% | 65,441 psi | 90% | 3186 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 63,817 psi | 88% | 3146 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 62,917 psi | 87% | 3232 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,732 psi | 66% | 3051 fps | 99.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 64,963 psi | 90% | 3202 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 61,728 psi | 85% | 3182 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 61,685 psi | 85% | 3251 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,667 psi | 53% | 2979 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 64,629 psi | 89% | 3219 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% | 51,909 psi | 72% | 2920 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 57,087 psi | 79% | 3045 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,730 psi | 62% | 2838 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,388 psi | 72% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,734 psi | 69% | 2923 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 42,496 psi | 59% | 2877 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 42,322 psi | 58% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,042 psi | 50% | 2756 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 59,683 psi | 82% | 2999 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 60,162 psi | 83% | 3031 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 58,073 psi | 80% | 2372 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 48,095 psi | 66% | 2959 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,814 psi | 56% | 2792 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,140 psi | 69% | 2966 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,952 psi | 70% | 2946 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 59,059 psi | 81% | 3196 fps | 100% |
| Alliant Power Pro 2000-MR | 50.6 gr | 80% | 44,164 psi | 61% | 2995 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,712 psi | 56% | 2818 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 58,015 psi | 80% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,685 psi | 60% | 2890 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,766 psi | 49% | 2769 fps | 95.6% |
| Alliant Reloder-17 | 49.8 gr | 80% | 35,360 psi | 49% | 2785 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,241 psi | 43% | 2664 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,506 psi | 50% | 2861 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 59,625 psi | 82% | 2989 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,529 psi | 66% | 2963 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 40,654 psi | 56% | 2825 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 46,949 psi | 65% | 2913 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,706 psi | 71% | 2953 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,530 psi | 68% | 2992 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 54,998 psi | 76% | 3156 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 57,261 psi | 79% | 3064 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 58,508 psi | 81% | 3091 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,307 psi | 57% | 2825 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 88% | 44,121 psi | 61% | 2936 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 90% | 50,894 psi | 70% | 3025 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,559 psi | 67% | 2972 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,053 psi | 43% | 2605 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,773 psi | 62% | 2940 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 46,963 psi | 65% | 3018 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 37% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,412 psi | 64% | 2917 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 48,602 psi | 67% | 2966 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,888 psi | 59% | 2831 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,165 psi | 62% | 2854 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 57,653 psi | 80% | 2976 fps | 100% |
| IMR 4350 | <<locked>> | 92% | 47,253 psi | 65% | 2936 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,513 psi | 63% | 2887 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 34,882 psi | 48% | 2710 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 44,802 psi | 62% | 2923 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 50,140 psi | 69% | 2966 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 57,087 psi | 79% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,601 psi | 66% | 2933 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,645 psi | 66% | 2887 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,931 psi | 59% | 2835 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 40,103 psi | 55% | 2772 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 43,352 psi | 60% | 2861 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,905 psi | 65% | 2904 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 47,442 psi | 65% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,076 psi | 59% | 2877 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 54,099 psi | 75% | 3100 fps | 95.6% |
| Norma MRP | <<locked>> | 98% | 45,049 psi | 62% | 3031 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 36,216 psi | 50% | 2759 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 42,946 psi | 59% | 2890 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 40,292 psi | 56% | 2861 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,169 psi | 69% | 2976 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,821 psi | 69% | 2992 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,070 psi | 75% | 3018 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 37% | 1762 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 56,028 psi | 77% | 3051 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,655 psi | 57% | 2808 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,383 psi | 64% | 3005 fps | 98.9% |
| ReloadSwiss RS 60 | 49.8 gr | 80% | 37,608 psi | 52% | 2858 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,810 psi | 49% | 2772 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 38,247 psi | 53% | 2844 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 51,039 psi | 70% | 2949 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,802 psi | 62% | 2854 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 38,290 psi | 53% | 2766 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 46,949 psi | 65% | 2913 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,103 psi | 55% | 2772 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,601 psi | 66% | 2933 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,931 psi | 59% | 2835 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 43,352 psi | 60% | 2861 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 59,350 psi | 82% | 3077 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 61,670 psi | 85% | 2753 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,175 psi | 54% | 2815 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 58,972 psi | 81% | 3048 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,573 psi | 67% | 2946 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,456 psi | 64% | 2923 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,153 psi | 66% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,292 psi | 56% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,831 psi | 62% | 2828 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 54,563 psi | 75% | 3051 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,703 psi | 66% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,385 psi | 67% | 2943 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 38,798 psi | 54% | 2766 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 28,427 psi | 39% | 2582 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 48,356 psi | 67% | 2989 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 54,114 psi | 75% | 2913 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,530 psi | 67% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,469 psi | 61% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,078 psi | 62% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,130 psi | 51% | 2703 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 35,418 psi | 49% | 2703 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 50,386 psi | 69% | 2963 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,381 psi | 60% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,231 psi | 51% | 2759 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 90% | 34,171 psi | 47% | 2753 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,793 psi | 45% | 2618 fps | 96.6% |
| Winchester 748 | <<locked>> | 80% | 50,459 psi | 70% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,121 psi | 61% | 2936 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,689 psi | 41% | 2687 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,354 psi | 64% | 2933 fps | 99.5% |
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 113 powders for .270 Win. Ackley Improved loaded with the .270 | 120gr | MRR Green Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,327 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 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 120.0 gr projectile in 0.277" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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 .270 | 120gr | MRR Green 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.