Load Specifications
Load data in caliber .270 Win. with .277 | 100gr | Hornady GMX bullet and 91 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 Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 88% | 55,317 psi | 89% | 3222 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,853 psi | 86% | 3238 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,142 psi | 85% | 3228 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,188 psi | 90% | 3310 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,069 psi | 85% | 3271 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,269 psi | 79% | 3261 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 55,013 psi | 88% | 3173 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,434 psi | 89% | 3199 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,940 psi | 88% | 3314 fps | 99% |
| ADI AR 2208 | <<locked>> | 96% | 56,043 psi | 90% | 3307 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 55,912 psi | 90% | 3297 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,940 psi | 86% | 3264 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 88% | 54,012 psi | 87% | 3258 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,303 psi | 89% | 3383 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,505 psi | 87% | 3425 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,390 psi | 89% | 3327 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,042 psi | 88% | 3235 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,376 psi | 90% | 3356 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,414 psi | 78% | 3271 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,866 psi | 85% | 3389 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,491 psi | 87% | 3156 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,955 psi | 88% | 3323 fps | 98.2% |
| Bofors RP3 | <<locked>> | 96% | 56,014 psi | 90% | 3346 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,173 psi | 90% | 3258 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,084 psi | 85% | 3291 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,969 psi | 88% | 3392 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,636 psi | 88% | 3278 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,825 psi | 90% | 3297 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,664 psi | 86% | 3287 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 90% | 55,434 psi | 89% | 3327 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,338 psi | 71% | 3133 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,665 psi | 88% | 3356 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,621 psi | 56% | 2064 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,403 psi | 86% | 3271 fps | 99.1% |
| IMR 3031 | <<locked>> | 90% | 54,592 psi | 88% | 3320 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,434 psi | 89% | 3291 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 55,535 psi | 89% | 3202 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,847 psi | 75% | 3192 fps | 96.5% |
| IMR 4895 | <<locked>> | 92% | 53,983 psi | 87% | 3327 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 88% | 53,940 psi | 86% | 3264 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 84% | 53,853 psi | 86% | 3245 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 53,954 psi | 87% | 3284 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,926 psi | 88% | 3241 fps | 99% |
| Lovex S062 | <<locked>> | 94% | 54,795 psi | 88% | 3287 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 3258 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 53,476 psi | 86% | 3255 fps | 99.5% |
| Norma 202 | <<locked>> | 90% | 53,809 psi | 86% | 3264 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,463 psi | 89% | 3340 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,081 psi | 79% | 3258 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 94% | 56,405 psi | 90% | 3366 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 54,853 psi | 88% | 3274 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,070 psi | 87% | 3297 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,390 psi | 89% | 3268 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,708 psi | 56% | 2106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,621 psi | 86% | 3255 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,375 psi | 87% | 3268 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,852 psi | 85% | 3360 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 52,707 psi | 85% | 3399 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,081 psi | 79% | 3278 fps | 96.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 3304 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 88% | 54,012 psi | 87% | 3245 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,664 psi | 86% | 3248 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 98% | 55,506 psi | 89% | 3327 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,925 psi | 86% | 3258 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 53,954 psi | 87% | 3284 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,795 psi | 88% | 3287 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,432 psi | 86% | 3215 fps | 99.3% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,362 psi | 90% | 3307 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,244 psi | 87% | 3337 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,144 psi | 90% | 3264 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,721 psi | 85% | 3238 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,534 psi | 86% | 3278 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,492 psi | 89% | 3209 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,376 psi | 89% | 3196 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,317 psi | 89% | 3301 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 54,679 psi | 88% | 3202 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,159 psi | 90% | 3301 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 56,057 psi | 90% | 3327 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,584 psi | 70% | 3189 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 86% | 55,042 psi | 88% | 3179 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,579 psi | 89% | 3196 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,214 psi | 85% | 3228 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,447 psi | 87% | 3241 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,259 psi | 87% | 3255 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 3261 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 54,665 psi | 88% | 3268 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 94% | 56,347 psi | 90% | 3287 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,633 psi | 81% | 3255 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,866 psi | 85% | 3245 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 54,230 psi | 87% | 3317 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,214 psi | 85% | 3284 fps | 99.2% |
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% | 42,960 psi | 69% | 3005 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,847 psi | 75% | 3117 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 35,143 psi | 56% | 2881 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 42,047 psi | 67% | 3051 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 33,214 psi | 53% | 2851 fps | 97.9% |
| Accurate 4350 | <<locked>> | 96% | 42,496 psi | 68% | 3120 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 51,706 psi | 83% | 3117 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,083 psi | 84% | 3140 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 39,653 psi | 64% | 2999 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 86% | 40,698 psi | 65% | 2999 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 52,127 psi | 84% | 3235 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,742 psi | 67% | 3022 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,002 psi | 66% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,515 psi | 78% | 3258 fps | 98.4% |
| Alliant Power Pro 2000-MR | 52.4 gr | 86% | 44,222 psi | 71% | 3205 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,925 psi | 56% | 2894 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,675 psi | 78% | 3130 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,364 psi | 65% | 3031 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,670 psi | 68% | 3140 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 37,318 psi | 60% | 3031 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,821 psi | 81% | 3097 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,640 psi | 67% | 3054 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 34,316 psi | 55% | 2887 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,743 psi | 70% | 3025 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,943 psi | 64% | 3022 fps | 97.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,179 psi | 71% | 3182 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 47,659 psi | 76% | 3156 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,675 psi | 78% | 3176 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 46,920 psi | 75% | 3159 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 39,943 psi | 64% | 3012 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,448 psi | 58% | 2946 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,853 psi | 57% | 2953 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 41% | 1847 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,392 psi | 62% | 2956 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 38,870 psi | 62% | 3022 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 40,074 psi | 64% | 2979 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 49,081 psi | 79% | 3097 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 43,816 psi | 70% | 3130 fps | 95.7% |
| IMR 4895 | <<locked>> | 82% | 38,754 psi | 62% | 3005 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 41,742 psi | 67% | 3022 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 80% | 46,862 psi | 75% | 3120 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 37,884 psi | 61% | 2966 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 40,103 psi | 64% | 2943 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 34,795 psi | 56% | 2861 fps | 95.6% |
| Lovex S065 | <<locked>> | 96% | 47,572 psi | 76% | 3140 fps | 95% |
| Norma 201 | <<locked>> | 80% | 38,682 psi | 62% | 2949 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 38,798 psi | 62% | 2966 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 39,668 psi | 64% | 3015 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 42,743 psi | 69% | 3123 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 84% | 39,595 psi | 63% | 3031 fps | 95.4% |
| Ramshot TAC | <<locked>> | 84% | 47,805 psi | 77% | 3136 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,915 psi | 66% | 3028 fps | 96% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,150 psi | 72% | 3071 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 41% | 1890 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,731 psi | 75% | 3127 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 50,792 psi | 81% | 3202 fps | 95% |
| ReloadSwiss RS 52 | 49.6 gr | 84% | 42,380 psi | 68% | 3146 fps | 95.8% |
| ReloadSwiss RS 60 | 49.2 gr | 82% | 32,372 psi | 52% | 2900 fps | 95.6% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,672 psi | 73% | 3209 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,615 psi | 75% | 3228 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,250 psi | 68% | 3018 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 36,608 psi | 59% | 2890 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 37,043 psi | 59% | 2949 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,572 psi | 76% | 3140 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,884 psi | 61% | 2966 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 34,795 psi | 56% | 2861 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,574 psi | 79% | 3146 fps | 98.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,692 psi | 84% | 3245 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 38,551 psi | 62% | 3012 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,559 psi | 79% | 3156 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 45,571 psi | 73% | 3100 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,116 psi | 61% | 2953 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,350 psi | 65% | 2927 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,170 psi | 53% | 2759 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 44,875 psi | 72% | 3104 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 39,871 psi | 64% | 2927 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 39,334 psi | 63% | 2969 fps | 95.5% |
| Somchem S355 | <<locked>> | 86% | 37,956 psi | 61% | 2959 fps | 95.7% |
| Somchem S365 | <<locked>> | 92% | 33,156 psi | 53% | 2920 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 45,803 psi | 73% | 3025 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,582 psi | 65% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,795 psi | 57% | 2894 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 36,811 psi | 59% | 2897 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 84% | 33,852 psi | 54% | 2831 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 96% | 45,034 psi | 72% | 3133 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 41,713 psi | 67% | 3015 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,244 psi | 57% | 2867 fps | 98% |
| Vihtavuori N550 | <<locked>> | 96% | 44,266 psi | 71% | 3130 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,492 psi | 60% | 2920 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 40,872 psi | 66% | 3054 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,347 psi | 60% | 2949 fps | 95.6% |
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 | 100gr | Hornady GMX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,425 fps; across all powders the maximum-charge window runs from 2,064 fps to 3,425 fps. Accurate 4350 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 54–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.277" calls for a 1:11.0 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 Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .270 Win. with the .277 | 100gr | Hornady GMX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.