Load Specifications
Load data in caliber .270 Win. with .277 | 115gr | Hasler Hunting bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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.
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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% | 56,260 psi | 90% | 3031 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,853 psi | 88% | 3054 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,650 psi | 88% | 3048 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,359 psi | 86% | 3068 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 54,665 psi | 88% | 3094 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,911 psi | 88% | 3173 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 55,883 psi | 90% | 3133 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 53,505 psi | 86% | 3074 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,679 psi | 88% | 3081 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,521 psi | 89% | 3064 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,767 psi | 89% | 3258 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,301 psi | 85% | 3100 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,956 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,867 psi | 86% | 3120 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 3176 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,215 psi | 87% | 3222 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,507 psi | 60% | 2867 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,811 psi | 89% | 3146 fps | 99.2% |
| Bofors RP3 | <<locked>> | 92% | 53,722 psi | 86% | 3110 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 53,925 psi | 86% | 3071 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,229 psi | 85% | 3015 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,143 psi | 87% | 3110 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,347 psi | 90% | 3219 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 55,245 psi | 89% | 3081 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,781 psi | 88% | 3123 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 98% | 54,404 psi | 87% | 3166 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 88% | 56,434 psi | 90% | 3146 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,110 psi | 79% | 3045 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,767 psi | 89% | 3176 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,492 psi | 89% | 3205 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 56% | 1929 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,201 psi | 87% | 3091 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 56,130 psi | 90% | 3133 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,391 psi | 90% | 3114 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 88% | 52,910 psi | 85% | 3028 fps | 96.3% |
| IMR 4198 | <<locked>> | 82% | 55,912 psi | 90% | 2995 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 3097 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,159 psi | 90% | 3110 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,837 psi | 83% | 3104 fps | 98.7% |
| IMR 4895 | <<locked>> | 90% | 55,245 psi | 89% | 3153 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 54,679 psi | 88% | 3081 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,650 psi | 88% | 3064 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,492 psi | 89% | 3107 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,376 psi | 89% | 3058 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 55,883 psi | 90% | 3107 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,303 psi | 89% | 3100 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,217 psi | 90% | 3133 fps | 97.2% |
| Norma 201 | <<locked>> | 88% | 54,317 psi | 87% | 3074 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,752 psi | 88% | 3077 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,040 psi | 85% | 3104 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 54,143 psi | 87% | 3163 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 90% | 53,737 psi | 86% | 3133 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,011 psi | 85% | 3150 fps | 97.4% |
| Ramshot TAC | <<locked>> | 86% | 55,245 psi | 89% | 3094 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,665 psi | 88% | 3117 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,883 psi | 90% | 3084 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,549 psi | 57% | 1975 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,244 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,405 psi | 89% | 3104 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,273 psi | 87% | 3189 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,896 psi | 86% | 3225 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,868 psi | 88% | 3196 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,679 psi | 88% | 3222 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 86% | 54,926 psi | 88% | 3058 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,868 psi | 88% | 3074 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,272 psi | 85% | 3097 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 53,925 psi | 86% | 3071 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,303 psi | 89% | 3100 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,492 psi | 89% | 3107 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,883 psi | 90% | 3107 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,217 psi | 90% | 3133 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,448 psi | 89% | 3166 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,316 psi | 85% | 3064 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,346 psi | 87% | 3100 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,130 psi | 90% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 52,895 psi | 85% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,898 psi | 90% | 3051 fps | 96.9% |
| Somchem S321 | <<locked>> | 84% | 56,159 psi | 90% | 3117 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,317 psi | 89% | 3015 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,156 psi | 85% | 3064 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 53,954 psi | 87% | 3100 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 3104 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 55,535 psi | 89% | 2979 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,362 psi | 90% | 3005 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,288 psi | 87% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,492 psi | 89% | 3054 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,709 psi | 89% | 3084 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,243 psi | 85% | 3104 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 86% | 55,477 psi | 89% | 3084 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,809 psi | 86% | 3051 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,753 psi | 89% | 3163 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,669 psi | 65% | 2949 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,664 psi | 86% | 3081 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 55,259 psi | 89% | 3133 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,737 psi | 88% | 3173 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,969 psi | 87% | 3107 fps | 99.8% |
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% | 46,572 psi | 75% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,111 psi | 82% | 2995 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,841 psi | 62% | 2779 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,224 psi | 74% | 2946 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,782 psi | 59% | 2762 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 38,348 psi | 61% | 2851 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 43,091 psi | 69% | 2897 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 36,448 psi | 58% | 2726 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,237 psi | 73% | 2913 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 45,121 psi | 72% | 2907 fps | 100% |
| Alliant Power Pro 2000-MR | 47.8 gr | 80% | 39,117 psi | 63% | 2910 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,868 psi | 58% | 2746 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,431 psi | 84% | 2986 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,798 psi | 62% | 2818 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 38,537 psi | 62% | 2871 fps | 95.6% |
| Alliant Reloder-17 | 48.2 gr | 82% | 33,170 psi | 53% | 2753 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,996 psi | 53% | 2746 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,366 psi | 68% | 2894 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 35,491 psi | 57% | 2746 fps | 97% |
| Bofors RP7 | <<locked>> | 94% | 50,575 psi | 81% | 3009 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,992 psi | 75% | 2907 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,874 psi | 70% | 2927 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,559 psi | 78% | 3081 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 51,721 psi | 83% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,030 psi | 63% | 2812 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 47,471 psi | 76% | 3041 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 43,511 psi | 70% | 2910 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,851 psi | 53% | 2687 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,508 psi | 63% | 2871 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 51,605 psi | 83% | 3136 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 42% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,713 psi | 67% | 2854 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 43,018 psi | 69% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,218 psi | 61% | 2766 fps | 96.3% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,705 psi | 80% | 2969 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,721 psi | 85% | 2949 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 51,082 psi | 82% | 3038 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,617 psi | 80% | 2995 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 36,854 psi | 59% | 2799 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 39,769 psi | 64% | 2854 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 45,237 psi | 73% | 2913 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 50,923 psi | 82% | 3002 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,814 psi | 67% | 2871 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 43,120 psi | 69% | 2831 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 37,985 psi | 61% | 2769 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 42,960 psi | 69% | 2871 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 49,487 psi | 79% | 3018 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 41,989 psi | 67% | 2848 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 42,293 psi | 68% | 2858 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 38,159 psi | 61% | 2805 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 38,551 psi | 62% | 2851 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,724 psi | 60% | 2815 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 96% | 46,340 psi | 74% | 3025 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 45,223 psi | 73% | 2910 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,483 psi | 71% | 2930 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,907 psi | 78% | 2966 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 42% | 1765 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,604 psi | 81% | 3005 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,353 psi | 73% | 2920 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,582 psi | 65% | 2923 fps | 96.8% |
| ReloadSwiss RS 60 | 47.1 gr | 80% | 33,156 psi | 53% | 2769 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,133 psi | 66% | 2936 fps | 96% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,466 psi | 66% | 2949 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 45,643 psi | 73% | 2897 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,958 psi | 64% | 2792 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,243 psi | 53% | 2680 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 94% | 50,575 psi | 81% | 3009 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,960 psi | 69% | 2871 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,814 psi | 67% | 2871 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 37,985 psi | 61% | 2769 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 49,487 psi | 79% | 3018 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,374 psi | 55% | 2733 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,149 psi | 69% | 2874 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,524 psi | 67% | 2858 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,453 psi | 70% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,984 psi | 58% | 2657 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,675 psi | 78% | 2930 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 48,936 psi | 78% | 2999 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 43,091 psi | 69% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,163 psi | 69% | 2881 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 34,214 psi | 55% | 2694 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 30,110 psi | 48% | 2671 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 49,153 psi | 79% | 2884 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,801 psi | 70% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,247 psi | 63% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,132 psi | 64% | 2792 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 32,561 psi | 52% | 2628 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 88% | 37,942 psi | 61% | 2802 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 45,324 psi | 73% | 2910 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 38,508 psi | 62% | 2769 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 39,871 psi | 64% | 2861 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 35,476 psi | 57% | 2825 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,243 psi | 53% | 2657 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 44,918 psi | 72% | 2956 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 47,471 psi | 76% | 3041 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,002 psi | 66% | 2861 fps | 98.1% |
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 96 powders for .270 Win. loaded with the .277 | 115gr | Hasler Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,258 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .270 Win. with the .277 | 115gr | Hasler 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.