Load Specifications
Bullet Manufacturer:Reichenberg
Bullet Weight:129 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:1:12.0
Load data in caliber .270 Win. Ackley Improved with .277 | 129gr | Reichenberg Spezial Jagd bullet and 119 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% | 62,192 psi | 86% | 2963 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 65,108 psi | 90% | 3051 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 62,439 psi | 86% | 2995 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 62,395 psi | 86% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 61,931 psi | 85% | 3028 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,763 psi | 69% | 2930 fps | 98.4% |
| Accurate 4064 | <<locked>> | 90% | 62,613 psi | 86% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 64,034 psi | 88% | 3169 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 64,353 psi | 89% | 2388 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 61,554 psi | 85% | 3087 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 62,729 psi | 87% | 3087 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,797 psi | 78% | 3087 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 64,020 psi | 88% | 3081 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 62,337 psi | 86% | 2995 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 62,874 psi | 87% | 3232 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 63,744 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 65,311 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 64,281 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 64,063 psi | 88% | 3222 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 62,047 psi | 86% | 3199 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,057 psi | 77% | 3074 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,458 psi | 68% | 3005 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,775 psi | 65% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,770 psi | 56% | 2848 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,447 psi | 74% | 3150 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 62,163 psi | 86% | 3110 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 65,253 psi | 90% | 3133 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,458 psi | 68% | 3005 fps | 96.1% |
| Bofors RP7 | <<locked>> | 96% | 64,078 psi | 88% | 3114 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 65,485 psi | 90% | 3058 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 64,687 psi | 89% | 3120 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 63,295 psi | 87% | 3182 fps | 100% |
| Hodgdon H322 | <<locked>> | 84% | 64,339 psi | 89% | 3058 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 61,496 psi | 85% | 3097 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 63,875 psi | 88% | 3189 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 98% | 63,599 psi | 88% | 3146 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 86% | 62,236 psi | 86% | 3097 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 60,408 psi | 83% | 3081 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 62,932 psi | 87% | 3136 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 63,193 psi | 87% | 3212 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 50% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 62,381 psi | 86% | 3081 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 65,238 psi | 90% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 65,093 psi | 90% | 3110 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 94% | 64,107 psi | 88% | 3091 fps | 99.4% |
| IMR 4198 | <<locked>> | 82% | 64,063 psi | 88% | 2956 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 64,832 psi | 89% | 3140 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 62,047 psi | 86% | 3087 fps | 99.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,724 psi | 78% | 3051 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 61,917 psi | 85% | 3117 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 64,020 psi | 88% | 3081 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 65,093 psi | 90% | 3068 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 62,395 psi | 86% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 64,034 psi | 88% | 3054 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 62,439 psi | 86% | 3064 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 61,815 psi | 85% | 3081 fps | 99.8% |
| Lovex S070 | <<locked>> | 98% | 63,237 psi | 87% | 3120 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,176 psi | 57% | 2769 fps | 96.5% |
| Norma 201 | <<locked>> | 88% | 64,107 psi | 88% | 3077 fps | 100% |
| Norma 202 | <<locked>> | 88% | 64,977 psi | 90% | 3074 fps | 100% |
| Norma 203B | <<locked>> | 90% | 63,440 psi | 87% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 98% | 62,497 psi | 86% | 3150 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 52,518 psi | 72% | 3094 fps | 98.1% |
| Norma URP | <<locked>> | 98% | 61,859 psi | 85% | 3146 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 64,875 psi | 89% | 3156 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,188 psi | 77% | 3123 fps | 96.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 64,875 psi | 89% | 3205 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,472 psi | 67% | 2956 fps | 96.4% |
| Ramshot TAC | <<locked>> | 86% | 64,832 psi | 89% | 3117 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 64,934 psi | 90% | 3130 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 65,311 psi | 90% | 3091 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,782 psi | 51% | 1916 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 63,338 psi | 87% | 3054 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 61,438 psi | 85% | 3077 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 61,467 psi | 85% | 3159 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 61,757 psi | 85% | 3196 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 63,773 psi | 88% | 3192 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 62,410 psi | 86% | 3225 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 64,774 psi | 89% | 3051 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 64,614 psi | 89% | 3074 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 64,774 psi | 89% | 3123 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,624 psi | 81% | 3058 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,042 psi | 76% | 3058 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 96% | 64,078 psi | 88% | 3114 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 61,815 psi | 85% | 3081 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 62,395 psi | 86% | 3058 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 62,439 psi | 86% | 3064 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 63,237 psi | 87% | 3120 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 62,917 psi | 87% | 3140 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 63,759 psi | 88% | 3097 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 64,150 psi | 88% | 3110 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 65,224 psi | 90% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 61,946 psi | 85% | 2949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 62,236 psi | 86% | 3035 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,534 psi | 75% | 3051 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 62,047 psi | 86% | 3064 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 64,498 psi | 89% | 2995 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 63,367 psi | 87% | 3081 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 64,440 psi | 89% | 3117 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 61,061 psi | 84% | 3051 fps | 96.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 60,843 psi | 84% | 3143 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,767 psi | 77% | 3031 fps | 98.1% |
| Unknown powder | <<locked>> | 96% | 62,932 psi | 87% | 3156 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 64,324 psi | 89% | 2953 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 65,499 psi | 90% | 2979 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 64,963 psi | 90% | 3028 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 61,786 psi | 85% | 2999 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 62,250 psi | 86% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 64,716 psi | 89% | 3143 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,196 psi | 66% | 2887 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 86% | 65,079 psi | 90% | 3084 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 63,570 psi | 88% | 3045 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 63,686 psi | 88% | 3150 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,199 psi | 72% | 3035 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 65,195 psi | 90% | 3110 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 62,395 psi | 86% | 3091 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 63,875 psi | 88% | 3189 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,974 psi | 58% | 2989 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,320 psi | 80% | 3061 fps | 97.6% |
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% | 54,998 psi | 76% | 2867 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 60,800 psi | 84% | 2995 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,254 psi | 67% | 2802 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 54,563 psi | 75% | 2953 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,614 psi | 62% | 2740 fps | 95.5% |
| Accurate 3100 | <<locked>> | 92% | 37,811 psi | 52% | 2694 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,629 psi | 63% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,229 psi | 47% | 2628 fps | 95.9% |
| ADI APS 450 | <<locked>> | 80% | 58,175 psi | 80% | 2300 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 51,039 psi | 70% | 2923 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,381 psi | 60% | 2766 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 46,905 psi | 65% | 2907 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,098 psi | 73% | 2923 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,810 psi | 76% | 2900 fps | 100% |
| Alliant Power Pro 2000-MR | 51.3 gr | 80% | 47,471 psi | 65% | 2979 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,772 psi | 60% | 2792 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 61,279 psi | 85% | 2959 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,572 psi | 64% | 2858 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,939 psi | 47% | 2641 fps | 96% |
| Alliant Reloder-17 | 50.5 gr | 80% | 38,174 psi | 53% | 2776 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,238 psi | 64% | 2897 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,296 psi | 64% | 2943 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,820 psi | 41% | 2546 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,114 psi | 50% | 2730 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,505 psi | 48% | 2733 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,778 psi | 70% | 2933 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 43,874 psi | 61% | 2802 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 46,296 psi | 64% | 2943 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,034 psi | 61% | 2772 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,505 psi | 75% | 2907 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,997 psi | 73% | 2953 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 59,016 psi | 81% | 3120 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 56,521 psi | 78% | 2953 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,309 psi | 61% | 2808 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 82% | 42,380 psi | 58% | 2818 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 46,615 psi | 64% | 2861 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 51,576 psi | 71% | 2933 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,415 psi | 43% | 2539 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,382 psi | 63% | 2861 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 44,005 psi | 61% | 2877 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 37% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,919 psi | 63% | 2818 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,790 psi | 66% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,699 psi | 59% | 2743 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,047 psi | 58% | 2707 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 60,742 psi | 84% | 2917 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 44,701 psi | 62% | 2808 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,960 psi | 59% | 2753 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 32,010 psi | 44% | 2552 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 47,776 psi | 66% | 2890 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,098 psi | 73% | 2923 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 60,785 psi | 84% | 3012 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,155 psi | 71% | 2900 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,256 psi | 69% | 2848 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,745 psi | 63% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,768 psi | 52% | 2641 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 40,872 psi | 56% | 2730 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 38,667 psi | 53% | 2713 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 50,038 psi | 69% | 2871 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,676 psi | 70% | 2874 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,963 psi | 63% | 2848 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 47,500 psi | 66% | 2900 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 42,598 psi | 59% | 2897 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,301 psi | 47% | 2628 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 46,209 psi | 64% | 2867 fps | 99.6% |
| Ramshot Grand | <<locked>> | 98% | 52,083 psi | 72% | 3051 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 84% | 38,145 psi | 53% | 2730 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 44,918 psi | 62% | 2887 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 53,229 psi | 73% | 2943 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,127 psi | 73% | 2959 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 57,261 psi | 79% | 2979 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 38% | 1709 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 59,524 psi | 82% | 3005 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,469 psi | 61% | 2789 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,082 psi | 69% | 2982 fps | 99.7% |
| ReloadSwiss RS 60 | 50.5 gr | 80% | 40,567 psi | 56% | 2841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,910 psi | 47% | 2641 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,911 psi | 50% | 2710 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 54,012 psi | 74% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,616 psi | 66% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,133 psi | 57% | 2743 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 54,955 psi | 76% | 2999 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 96% | 48,138 psi | 66% | 2936 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,034 psi | 61% | 2772 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,768 psi | 52% | 2641 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,155 psi | 71% | 2900 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,745 psi | 63% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,872 psi | 56% | 2730 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,206 psi | 58% | 2795 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,866 psi | 72% | 2920 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,603 psi | 68% | 2890 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,879 psi | 70% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,830 psi | 59% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,235 psi | 58% | 2697 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 47,688 psi | 66% | 2930 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 58,030 psi | 80% | 3009 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 50,734 psi | 70% | 2805 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,663 psi | 71% | 2913 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,698 psi | 57% | 2746 fps | 99.3% |
| Somchem S361 | <<locked>> | 98% | 57,072 psi | 79% | 2992 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 30,893 psi | 43% | 2582 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 43,004 psi | 59% | 2802 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 37,043 psi | 51% | 2687 fps | 96.1% |
| Vihtavuori N130 | <<locked>> | 80% | 57,058 psi | 79% | 2858 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 51,387 psi | 71% | 2792 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,543 psi | 66% | 2789 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,892 psi | 66% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,726 psi | 55% | 2674 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,636 psi | 49% | 2631 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 45,121 psi | 62% | 2831 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 53,664 psi | 74% | 2927 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,325 psi | 64% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,288 psi | 49% | 2631 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 30,705 psi | 42% | 2575 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,128 psi | 48% | 2602 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 58,291 psi | 80% | 3035 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 42,380 psi | 58% | 2818 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,253 psi | 39% | 2575 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,891 psi | 65% | 2867 fps | 95% |
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 130 powders for .270 Win. Ackley Improved loaded with the .277 | 129gr | Reichenberg Spezial Jagd. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,232 fps. Accurate 3100 gives the best case fill at 100 %, and 130 of the 130 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 129.0 gr projectile in 0.277" calls for a 1:12.0 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. Ackley Improved with the .277 | 129gr | Reichenberg Spezial Jagd they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.