Load Specifications
Load data in caliber .270 Win. with .277 | 115gr | CutEdge ER Raptor bullet and 95 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, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 54,070 psi | 87% | 2986 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,130 psi | 90% | 3061 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,201 psi | 89% | 3045 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,389 psi | 87% | 3071 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 55,303 psi | 89% | 3094 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 3107 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 88% | 53,417 psi | 86% | 3077 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 54,433 psi | 87% | 3074 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,043 psi | 90% | 3091 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,231 psi | 90% | 3068 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,780 psi | 86% | 3140 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,968 psi | 85% | 3192 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,143 psi | 87% | 3100 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,824 psi | 86% | 2995 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,665 psi | 88% | 3117 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 3110 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,940 psi | 88% | 3219 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,101 psi | 90% | 2972 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,040 psi | 85% | 3084 fps | 98.7% |
| Bofors RP3 | <<locked>> | 94% | 54,302 psi | 87% | 3110 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,476 psi | 87% | 3022 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,042 psi | 88% | 3114 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,403 psi | 86% | 3156 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 82% | 52,982 psi | 85% | 3035 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,230 psi | 87% | 3061 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,883 psi | 90% | 3123 fps | 98.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,129 psi | 88% | 3163 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 53,911 psi | 86% | 3091 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,151 psi | 74% | 2979 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,040 psi | 85% | 3120 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 56% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,361 psi | 89% | 3097 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 53,461 psi | 86% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,983 psi | 87% | 3061 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,215 psi | 87% | 3031 fps | 96.2% |
| IMR 4198 | <<locked>> | 82% | 54,027 psi | 87% | 2956 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,635 psi | 86% | 3051 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,791 psi | 78% | 3038 fps | 98% |
| IMR 4895 | <<locked>> | 92% | 56,043 psi | 90% | 3153 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 56,043 psi | 90% | 3091 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,072 psi | 90% | 3071 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,275 psi | 90% | 3107 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,316 psi | 85% | 3009 fps | 99.4% |
| Lovex S062 | <<locked>> | 92% | 53,461 psi | 86% | 3058 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,912 psi | 90% | 3094 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 3071 fps | 96.3% |
| Norma 201 | <<locked>> | 90% | 55,361 psi | 89% | 3077 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 55,753 psi | 89% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 92% | 53,824 psi | 86% | 3104 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 51,010 psi | 82% | 3097 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 92% | 54,476 psi | 87% | 3130 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,053 psi | 80% | 3081 fps | 96.4% |
| Ramshot TAC | <<locked>> | 88% | 56,391 psi | 90% | 3097 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,985 psi | 90% | 3123 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,403 psi | 86% | 3028 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,157 psi | 56% | 1949 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,492 psi | 89% | 3071 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,362 psi | 90% | 3104 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,984 psi | 88% | 3189 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,824 psi | 88% | 3228 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,547 psi | 83% | 3130 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,938 psi | 83% | 3153 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 88% | 55,999 psi | 90% | 3061 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,579 psi | 89% | 3071 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 54,157 psi | 87% | 3097 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,912 psi | 90% | 3094 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,275 psi | 90% | 3107 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 53,461 psi | 86% | 3058 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 3071 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,158 psi | 88% | 3035 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,304 psi | 90% | 3166 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,911 psi | 88% | 3022 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,694 psi | 88% | 3071 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,274 psi | 89% | 3100 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,853 psi | 86% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 53,766 psi | 86% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,997 psi | 85% | 2986 fps | 95.9% |
| Somchem S321 | <<locked>> | 84% | 53,461 psi | 86% | 3061 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 56,420 psi | 90% | 3015 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,128 psi | 87% | 3064 fps | 99.4% |
| Somchem S355 | <<locked>> | 96% | 54,534 psi | 87% | 3097 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,469 psi | 73% | 3038 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 84% | 53,679 psi | 86% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,998 psi | 87% | 2959 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,129 psi | 88% | 3041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,011 psi | 85% | 3005 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,260 psi | 90% | 3081 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,809 psi | 86% | 3100 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 86% | 52,953 psi | 85% | 3031 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 54,781 psi | 88% | 3054 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 3100 fps | 98.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,897 psi | 88% | 3084 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 56,391 psi | 90% | 3136 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,129 psi | 88% | 3163 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,969 psi | 88% | 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% | 44,585 psi | 71% | 2835 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,762 psi | 78% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,680 psi | 59% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,947 psi | 70% | 2894 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 34,693 psi | 56% | 2707 fps | 99.1% |
| Accurate 4350 | <<locked>> | 92% | 38,609 psi | 62% | 2851 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 41,176 psi | 66% | 2841 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 37,405 psi | 60% | 2736 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,308 psi | 69% | 2861 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 42,931 psi | 69% | 2861 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,517 psi | 81% | 3081 fps | 99.4% |
| Alliant Power Pro 2000-MR | 46.8 gr | 82% | 39,929 psi | 64% | 2913 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,258 psi | 55% | 2694 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,270 psi | 81% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,956 psi | 59% | 2762 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,957 psi | 62% | 2867 fps | 95.3% |
| Alliant Reloder-17 | 47.2 gr | 84% | 33,808 psi | 54% | 2759 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,431 psi | 84% | 2917 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,234 psi | 65% | 2835 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 33,402 psi | 54% | 2684 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,092 psi | 72% | 2854 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,814 psi | 67% | 2874 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,977 psi | 74% | 3022 fps | 97.9% |
| Hodgdon H322 | <<locked>> | 80% | 49,487 psi | 79% | 2976 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,459 psi | 81% | 2999 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 42,554 psi | 68% | 2877 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 98% | 51,459 psi | 83% | 3100 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 41,539 psi | 67% | 2858 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,431 psi | 54% | 2694 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,449 psi | 60% | 2812 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,715 psi | 41% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,842 psi | 64% | 2802 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 40,683 psi | 65% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,593 psi | 59% | 2713 fps | 95.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,792 psi | 81% | 2972 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 50,749 psi | 81% | 2907 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,531 psi | 81% | 2995 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 39,813 psi | 64% | 2858 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 37,855 psi | 61% | 2799 fps | 96.5% |
| IMR 8208 XBR | <<locked>> | 80% | 43,308 psi | 69% | 2861 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 48,689 psi | 78% | 2953 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,813 psi | 64% | 2818 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 41,539 psi | 67% | 2782 fps | 97.5% |
| Lovex S062 | <<locked>> | 80% | 36,289 psi | 58% | 2717 fps | 97.3% |
| Lovex S065 | <<locked>> | 92% | 43,453 psi | 70% | 2867 fps | 95.1% |
| Lovex S070 | <<locked>> | 98% | 49,864 psi | 80% | 3009 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 40,001 psi | 64% | 2792 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 40,524 psi | 65% | 2812 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 36,303 psi | 58% | 2749 fps | 95.9% |
| Norma URP | <<locked>> | 92% | 39,131 psi | 63% | 2858 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 35,882 psi | 58% | 2756 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 98% | 46,804 psi | 75% | 3018 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 43,134 psi | 69% | 2851 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,482 psi | 68% | 2874 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,949 psi | 75% | 2913 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,991 psi | 42% | 1742 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,559 psi | 78% | 2956 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,282 psi | 74% | 2923 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,493 psi | 62% | 2864 fps | 95.9% |
| ReloadSwiss RS 60 | 45 gr | 80% | 31,517 psi | 51% | 2707 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,495 psi | 67% | 2933 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 45,121 psi | 72% | 3015 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 43,714 psi | 70% | 2848 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 38,029 psi | 61% | 2736 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 33,765 psi | 54% | 2687 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,453 psi | 70% | 2867 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,813 psi | 64% | 2818 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 36,289 psi | 58% | 2717 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 98% | 49,864 psi | 80% | 3009 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,576 psi | 83% | 2979 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,099 psi | 56% | 2743 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,242 psi | 82% | 2966 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,220 psi | 66% | 2818 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,769 psi | 64% | 2808 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,655 psi | 67% | 2759 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,345 psi | 55% | 2608 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,763 psi | 80% | 2933 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,601 psi | 75% | 2943 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 41,162 psi | 66% | 2759 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,944 psi | 66% | 2822 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 32,445 psi | 52% | 2638 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 30,385 psi | 49% | 2667 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 47,224 psi | 76% | 2841 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,945 psi | 67% | 2759 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,260 psi | 60% | 2733 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,232 psi | 61% | 2740 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 30,879 psi | 50% | 2572 fps | 96% |
| Vihtavuori N160 | <<locked>> | 92% | 41,031 psi | 66% | 2861 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 43,120 psi | 69% | 2851 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 80% | 36,811 psi | 59% | 2720 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 40,350 psi | 65% | 2861 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,910 psi | 54% | 2661 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 42,670 psi | 68% | 2900 fps | 99.3% |
| Winchester 760 | <<locked>> | 98% | 51,459 psi | 83% | 3100 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,001 psi | 63% | 2805 fps | 97.3% |
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 108 powders for .270 Win. loaded with the .277 | 115gr | CutEdge ER Raptor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,228 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.277" calls for a 1:8.5 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .270 Win. with the .277 | 115gr | CutEdge ER Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Norma 204 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.