Load Specifications
Load data in caliber .270 Win. with .277 | 110gr | Barnes TSX BT bullet and 95 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.
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% | 55,695 psi | 89% | 3091 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,041 psi | 87% | 3110 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,027 psi | 87% | 3107 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,808 psi | 85% | 3123 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 54,056 psi | 87% | 3153 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,114 psi | 87% | 3225 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 55,071 psi | 88% | 3189 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 94% | 56,362 psi | 90% | 3189 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,288 psi | 87% | 3143 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 54,781 psi | 88% | 3127 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,898 psi | 90% | 3261 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,926 psi | 88% | 3307 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,115 psi | 90% | 3212 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,230 psi | 89% | 3097 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,258 psi | 85% | 3176 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,243 psi | 84% | 3228 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,476 psi | 86% | 3278 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,057 psi | 59% | 2910 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,317 psi | 89% | 3205 fps | 99% |
| Bofors RP3 | <<locked>> | 92% | 52,968 psi | 85% | 3166 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,941 psi | 90% | 3127 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,519 psi | 86% | 3166 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,637 psi | 89% | 3274 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 82% | 54,636 psi | 88% | 3140 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,970 psi | 90% | 3166 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,302 psi | 87% | 3179 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 98% | 53,708 psi | 86% | 3219 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 55,593 psi | 89% | 3202 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,254 psi | 77% | 3094 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,274 psi | 89% | 3238 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 56% | 1978 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,751 psi | 86% | 3150 fps | 99.6% |
| IMR 3031 | <<locked>> | 88% | 55,332 psi | 89% | 3189 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,767 psi | 89% | 3173 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,057 psi | 90% | 3146 fps | 96.6% |
| IMR 4198 | <<locked>> | 82% | 55,376 psi | 89% | 3061 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,738 psi | 89% | 3169 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 3153 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 54,636 psi | 88% | 3212 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 54,288 psi | 87% | 3143 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 54,099 psi | 87% | 3123 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,795 psi | 88% | 3166 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,998 psi | 88% | 3117 fps | 99.5% |
| Lovex S062 | <<locked>> | 92% | 55,303 psi | 89% | 3166 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,505 psi | 87% | 3153 fps | 97.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 3189 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 53,577 psi | 86% | 3127 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 54,302 psi | 87% | 3140 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,811 psi | 89% | 3219 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 53,461 psi | 86% | 3215 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 90% | 52,910 psi | 85% | 3182 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,504 psi | 84% | 3205 fps | 96.9% |
| Ramshot TAC | <<locked>> | 86% | 54,607 psi | 88% | 3150 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,317 psi | 87% | 3176 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,347 psi | 89% | 3140 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,389 psi | 57% | 2024 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,592 psi | 86% | 3123 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,578 psi | 88% | 3156 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,563 psi | 86% | 3245 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,243 psi | 85% | 3281 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,911 psi | 86% | 3245 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,085 psi | 87% | 3274 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 86% | 54,360 psi | 87% | 3117 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,056 psi | 87% | 3127 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 96% | 56,391 psi | 90% | 3212 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,505 psi | 87% | 3153 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,795 psi | 88% | 3166 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,303 psi | 89% | 3166 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 3189 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,868 psi | 88% | 3222 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,318 psi | 90% | 3127 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,968 psi | 85% | 3123 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,751 psi | 86% | 3156 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,550 psi | 89% | 3077 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,622 psi | 89% | 3071 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,317 psi | 89% | 3104 fps | 96.4% |
| Somchem S321 | <<locked>> | 84% | 55,550 psi | 89% | 3176 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,636 psi | 88% | 3071 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,460 psi | 84% | 3117 fps | 99.2% |
| Somchem S355 | <<locked>> | 94% | 53,287 psi | 85% | 3156 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,718 psi | 77% | 3156 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 55,114 psi | 88% | 3041 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,738 psi | 89% | 3064 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,824 psi | 86% | 3100 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,897 psi | 88% | 3114 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,868 psi | 88% | 3136 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,115 psi | 90% | 3215 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 54,708 psi | 88% | 3143 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 53,214 psi | 85% | 3107 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,274 psi | 89% | 3219 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,074 psi | 64% | 2995 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,171 psi | 85% | 3133 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 54,607 psi | 88% | 3192 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,027 psi | 87% | 3225 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,606 psi | 86% | 3166 fps | 99.7% |
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% | 46,209 psi | 74% | 2940 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,473 psi | 81% | 3051 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,189 psi | 61% | 2825 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,585 psi | 73% | 2999 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 36,114 psi | 58% | 2805 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 40,480 psi | 65% | 2959 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 42,395 psi | 68% | 2943 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 38,493 psi | 62% | 2831 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,541 psi | 71% | 2963 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 44,411 psi | 71% | 2963 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,083 psi | 84% | 3192 fps | 99.5% |
| Alliant Power Pro 2000-MR | 48.8 gr | 80% | 38,537 psi | 62% | 2953 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,491 psi | 57% | 2792 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,112 psi | 84% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,145 psi | 61% | 2861 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 40,379 psi | 65% | 2976 fps | 95.8% |
| Alliant Reloder-17 | 50.5 gr | 84% | 35,201 psi | 56% | 2867 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 34,592 psi | 55% | 2844 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,771 psi | 67% | 2940 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 34,838 psi | 56% | 2789 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,354 psi | 74% | 2959 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,279 psi | 69% | 2979 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,037 psi | 77% | 3136 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 51,213 psi | 82% | 3087 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,286 psi | 84% | 3107 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 41,336 psi | 66% | 2923 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 96% | 50,067 psi | 80% | 3153 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,801 psi | 69% | 2959 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 34,751 psi | 56% | 2795 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,928 psi | 62% | 2917 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 41% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,278 psi | 66% | 2910 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 42,351 psi | 68% | 2966 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,884 psi | 61% | 2815 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,327 psi | 79% | 3025 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 52,257 psi | 84% | 3012 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 52,185 psi | 84% | 3104 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 39,102 psi | 63% | 2910 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 39,073 psi | 63% | 2897 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 44,541 psi | 71% | 2963 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 50,517 psi | 81% | 3061 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 41,249 psi | 66% | 2920 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 42,801 psi | 69% | 2887 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 37,623 psi | 60% | 2818 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 45,252 psi | 73% | 2979 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 48,776 psi | 78% | 3068 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 41,365 psi | 66% | 2894 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 41,858 psi | 67% | 2913 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 37,536 psi | 60% | 2848 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 40,640 psi | 65% | 2959 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,159 psi | 60% | 2858 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 96% | 45,759 psi | 73% | 3071 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 44,585 psi | 71% | 2959 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,121 psi | 71% | 2982 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,269 psi | 77% | 3015 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 42% | 1808 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,067 psi | 80% | 3061 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,993 psi | 77% | 3031 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,958 psi | 64% | 2969 fps | 96.3% |
| ReloadSwiss RS 60 | 48.1 gr | 80% | 32,706 psi | 52% | 2812 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,379 psi | 65% | 2976 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,888 psi | 70% | 3064 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 45,295 psi | 73% | 2956 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 39,392 psi | 63% | 2841 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 32,663 psi | 52% | 2720 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 45,252 psi | 73% | 2979 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,249 psi | 66% | 2920 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 37,623 psi | 60% | 2818 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 96% | 48,776 psi | 78% | 3068 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 36,376 psi | 58% | 2844 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,113 psi | 85% | 3077 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,801 psi | 69% | 2927 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,017 psi | 66% | 2907 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,149 psi | 69% | 2867 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,708 psi | 57% | 2710 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 51,488 psi | 83% | 3041 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 48,283 psi | 77% | 3051 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 42,496 psi | 68% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,496 psi | 68% | 2927 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 33,663 psi | 54% | 2736 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 31,778 psi | 51% | 2776 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 48,863 psi | 78% | 2946 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,511 psi | 70% | 2864 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,870 psi | 62% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,494 psi | 63% | 2838 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 31,995 psi | 51% | 2667 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 90% | 40,045 psi | 64% | 2910 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 44,585 psi | 71% | 2959 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 38,058 psi | 61% | 2818 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 42,163 psi | 68% | 2969 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 37,463 psi | 60% | 2933 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,880 psi | 53% | 2700 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 44,324 psi | 71% | 3005 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 50,328 psi | 81% | 3156 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,437 psi | 65% | 2910 fps | 97.7% |
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 110 powders for .270 Win. loaded with the .277 | 110gr | Barnes TSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 1,978 fps to 3,307 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 110.0 gr projectile in 0.277" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .270 Win. with the .277 | 110gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.