Load Specifications
Load data in caliber .270 Win. with .277 | 107gr | Peregrine Glider GRM bullet and 92 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>> | 86% | 53,026 psi | 85% | 3084 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,013 psi | 88% | 3156 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,201 psi | 87% | 3143 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,388 psi | 86% | 3166 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,186 psi | 87% | 3189 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 3192 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 55,840 psi | 90% | 3081 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,246 psi | 90% | 3107 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,825 psi | 90% | 3228 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 53,519 psi | 86% | 3166 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,027 psi | 88% | 3182 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 55,187 psi | 88% | 3166 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,055 psi | 85% | 3241 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,898 psi | 90% | 3350 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,055 psi | 85% | 3189 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,362 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,664 psi | 86% | 3209 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,284 psi | 79% | 3196 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,853 psi | 86% | 3310 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,172 psi | 88% | 3068 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,927 psi | 90% | 3238 fps | 98.7% |
| Bofors RP3 | <<locked>> | 94% | 53,359 psi | 86% | 3202 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,722 psi | 86% | 3117 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,215 psi | 87% | 3209 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,246 psi | 90% | 3317 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 84% | 55,593 psi | 89% | 3189 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,229 psi | 85% | 3156 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,940 psi | 88% | 3215 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 56,333 psi | 90% | 3241 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,498 psi | 73% | 3068 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,666 psi | 89% | 3271 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 56% | 1985 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,549 psi | 87% | 3192 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 55,854 psi | 90% | 3235 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,420 psi | 90% | 3209 fps | 99.2% |
| IMR 4198 | <<locked>> | 82% | 53,301 psi | 85% | 3061 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,275 psi | 90% | 3199 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,950 psi | 77% | 3120 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 55,013 psi | 88% | 3248 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 55,027 psi | 88% | 3182 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 55,143 psi | 88% | 3166 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,477 psi | 89% | 3205 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,912 psi | 90% | 3159 fps | 99.4% |
| Lovex S062 | <<locked>> | 94% | 55,767 psi | 89% | 3202 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 3186 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 54,244 psi | 87% | 3169 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 54,969 psi | 88% | 3179 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,823 psi | 85% | 3196 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 50,183 psi | 80% | 3186 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 92% | 53,693 psi | 86% | 3225 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 55,608 psi | 89% | 3192 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,129 psi | 88% | 3219 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,275 psi | 90% | 3182 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 56% | 2034 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,578 psi | 88% | 3169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,651 psi | 89% | 3196 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,114 psi | 87% | 3284 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,853 psi | 86% | 3323 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 3209 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 3235 fps | 97% |
| Rottweil R 901 | <<locked>> | 88% | 55,201 psi | 89% | 3159 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,795 psi | 88% | 3166 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 96% | 53,200 psi | 85% | 3192 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,201 psi | 89% | 3186 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,477 psi | 89% | 3205 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,767 psi | 89% | 3202 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,462 psi | 87% | 3136 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,419 psi | 89% | 3261 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,824 psi | 86% | 3120 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,809 psi | 86% | 3163 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,563 psi | 87% | 3196 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,434 psi | 90% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,997 psi | 85% | 3061 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,985 psi | 90% | 3136 fps | 96% |
| Somchem S321 | <<locked>> | 86% | 56,405 psi | 90% | 3219 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 55,419 psi | 89% | 3110 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,258 psi | 85% | 3156 fps | 99% |
| Somchem S355 | <<locked>> | 96% | 53,751 psi | 86% | 3192 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,628 psi | 72% | 3123 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 56,086 psi | 90% | 3087 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,301 psi | 85% | 3058 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,375 psi | 87% | 3143 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,709 psi | 89% | 3156 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,550 psi | 89% | 3176 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,881 psi | 85% | 3189 fps | 98% |
| Vihtavuori N530 | <<locked>> | 88% | 55,521 psi | 89% | 3182 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 54,027 psi | 87% | 3150 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 3186 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,983 psi | 87% | 3173 fps | 99.6% |
| Winchester 748 | <<locked>> | 88% | 55,303 psi | 89% | 3235 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,360 psi | 87% | 3255 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,099 psi | 87% | 3202 fps | 99.5% |
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% | 43,729 psi | 70% | 2923 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,979 psi | 77% | 3038 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,984 psi | 58% | 2808 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,178 psi | 69% | 2979 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 34,026 psi | 55% | 2785 fps | 98.6% |
| Accurate 4350 | <<locked>> | 94% | 40,741 psi | 65% | 2995 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 52,373 psi | 84% | 3025 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,765 psi | 85% | 3054 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,466 psi | 65% | 2927 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 39,015 psi | 63% | 2871 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,583 psi | 68% | 2946 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 41,930 psi | 67% | 2953 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,588 psi | 80% | 3176 fps | 99% |
| Alliant Power Pro 2000-MR | 49.7 gr | 84% | 41,989 psi | 67% | 3064 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,431 psi | 54% | 2766 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,719 psi | 80% | 3045 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 38,740 psi | 62% | 2900 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,872 psi | 66% | 3005 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 86% | 35,520 psi | 57% | 2897 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,924 psi | 83% | 3015 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,711 psi | 64% | 2920 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 32,909 psi | 53% | 2762 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,454 psi | 71% | 2946 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,031 psi | 66% | 2959 fps | 98.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,237 psi | 73% | 3110 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 80% | 48,660 psi | 78% | 3074 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,603 psi | 80% | 3094 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 44,759 psi | 72% | 3025 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 40,814 psi | 65% | 2940 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 35,012 psi | 56% | 2825 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,782 psi | 59% | 2890 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,730 psi | 41% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,189 psi | 63% | 2887 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 39,972 psi | 64% | 2949 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 38,305 psi | 61% | 2848 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 50,154 psi | 80% | 3012 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,852 psi | 85% | 3140 fps | 95.2% |
| IMR 4831 | <<locked>> | 96% | 41,872 psi | 67% | 2999 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 37,130 psi | 60% | 2874 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,583 psi | 68% | 2946 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 47,790 psi | 77% | 3041 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 38,914 psi | 62% | 2900 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 41,017 psi | 66% | 2871 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 35,737 psi | 57% | 2799 fps | 96.6% |
| Lovex S065 | <<locked>> | 94% | 45,571 psi | 73% | 3009 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,392 psi | 63% | 2877 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 39,595 psi | 63% | 2894 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 38,087 psi | 61% | 2890 fps | 95.9% |
| Norma URP | <<locked>> | 94% | 40,988 psi | 66% | 2995 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 82% | 37,811 psi | 61% | 2900 fps | 95.5% |
| Ramshot TAC | <<locked>> | 82% | 45,411 psi | 73% | 2999 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,756 psi | 67% | 2959 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,238 psi | 74% | 2999 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 42% | 1821 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,718 psi | 77% | 3048 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,472 psi | 78% | 3064 fps | 95% |
| ReloadSwiss RS 52 | 47.1 gr | 82% | 40,509 psi | 65% | 3012 fps | 95.9% |
| ReloadSwiss RS 60 | 46.6 gr | 80% | 30,821 psi | 49% | 2769 fps | 95.6% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,598 psi | 70% | 3074 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,543 psi | 76% | 3163 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 42,931 psi | 69% | 2936 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 37,492 psi | 60% | 2822 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 35,375 psi | 57% | 2822 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,571 psi | 73% | 3009 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,914 psi | 62% | 2900 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 35,737 psi | 57% | 2799 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,763 psi | 81% | 3071 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,767 psi | 59% | 2881 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,662 psi | 81% | 3071 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,453 psi | 70% | 2966 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,972 psi | 62% | 2884 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,176 psi | 66% | 2851 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,924 psi | 54% | 2694 fps | 99% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,315 psi | 84% | 3074 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,050 psi | 74% | 3035 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 40,582 psi | 65% | 2848 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 40,422 psi | 65% | 2904 fps | 96.5% |
| Somchem S355 | <<locked>> | 84% | 36,434 psi | 58% | 2835 fps | 95.9% |
| Somchem S365 | <<locked>> | 90% | 31,923 psi | 51% | 2802 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 46,731 psi | 75% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,437 psi | 66% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,709 psi | 59% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,608 psi | 60% | 2825 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 30,284 psi | 49% | 2648 fps | 95% |
| Vihtavuori N160 | <<locked>> | 94% | 43,221 psi | 69% | 3002 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 42,598 psi | 68% | 2943 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,071 psi | 58% | 2799 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 94% | 42,337 psi | 68% | 2999 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,607 psi | 57% | 2792 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 41,669 psi | 67% | 2979 fps | 98.8% |
| Winchester 760 | <<locked>> | 98% | 50,850 psi | 82% | 3192 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,334 psi | 61% | 2887 fps | 96.6% |
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 107 powders for .270 Win. loaded with the .277 | 107gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,350 fps; across all powders the maximum-charge window runs from 1,985 fps to 3,350 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 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 107.0 gr projectile in 0.277" calls for a 1:9.5 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 Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .270 Win. with the .277 | 107gr | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.