Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 132gr | Peregrine VLR-4 bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 55,985 psi | 88% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,056 psi | 85% | 3009 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 3114 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,536 psi | 89% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,201 psi | 85% | 3107 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 54,998 psi | 86% | 3209 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 86% | 57,000 psi | 89% | 3084 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,695 psi | 87% | 3163 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,087 psi | 89% | 3219 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,898 psi | 89% | 3219 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,244 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,418 psi | 85% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,463 psi | 87% | 3173 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,913 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,897 psi | 86% | 3146 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3209 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 3130 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,861 psi | 72% | 3058 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,392 psi | 90% | 3284 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 3130 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 54,911 psi | 86% | 3064 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3209 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 54,462 psi | 85% | 3058 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2989 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 84% | 55,579 psi | 87% | 3087 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,710 psi | 89% | 3166 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 56,159 psi | 88% | 3120 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 98% | 57,319 psi | 90% | 3156 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,115 psi | 88% | 3140 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,506 psi | 87% | 3084 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,826 psi | 89% | 3123 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,831 psi | 70% | 3094 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 90% | 57,290 psi | 90% | 3209 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 57% | 1936 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,305 psi | 90% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,362 psi | 88% | 3061 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,288 psi | 87% | 3045 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 55,709 psi | 87% | 3091 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,246 psi | 88% | 3087 fps | 99.5% |
| IMR 4831 | <<locked>> | 92% | 54,998 psi | 86% | 3100 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,840 psi | 88% | 3104 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,027 psi | 86% | 3084 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,491 psi | 85% | 3189 fps | 97.7% |
| Lovex S060 | <<locked>> | 82% | 57,682 psi | 90% | 3045 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,463 psi | 88% | 3054 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,217 psi | 88% | 3081 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,288 psi | 85% | 3071 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,543 psi | 73% | 2953 fps | 99.1% |
| Norma 201 | <<locked>> | 82% | 57,609 psi | 90% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,232 psi | 90% | 3114 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,869 psi | 89% | 3153 fps | 98.7% |
| Norma MRP | <<locked>> | 98% | 55,941 psi | 88% | 3238 fps | 99.7% |
| Norma URP | <<locked>> | 92% | 56,826 psi | 89% | 3150 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,752 psi | 86% | 3087 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,027 psi | 86% | 3205 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 55,854 psi | 88% | 3156 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3071 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 58% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,448 psi | 87% | 3071 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,318 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,418 psi | 85% | 3133 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,753 psi | 89% | 3225 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,933 psi | 70% | 3091 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 55,013 psi | 86% | 3015 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,042 psi | 86% | 3061 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,188 psi | 90% | 3127 fps | 98% |
| Rottweil R 905 | <<locked>> | 96% | 54,070 psi | 85% | 3127 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,462 psi | 85% | 3058 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,217 psi | 88% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 56,463 psi | 88% | 3054 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,288 psi | 85% | 3071 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,956 psi | 89% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,217 psi | 88% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,101 psi | 88% | 3031 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,638 psi | 90% | 3189 fps | 99.1% |
| Somchem S355 | <<locked>> | 86% | 55,056 psi | 86% | 3058 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,434 psi | 87% | 3061 fps | 97% |
| Somchem S365 | <<locked>> | 94% | 56,318 psi | 88% | 3146 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,737 psi | 86% | 3104 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 55,230 psi | 87% | 2966 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,608 psi | 87% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,652 psi | 89% | 3031 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,187 psi | 86% | 3087 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,288 psi | 85% | 3077 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 84% | 57,580 psi | 90% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,273 psi | 85% | 3091 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,419 psi | 87% | 3156 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,115 psi | 88% | 3232 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,761 psi | 75% | 3061 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,071 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,000 psi | 89% | 3173 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,926 psi | 86% | 3097 fps | 98.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,373 psi | 82% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,502 psi | 79% | 2946 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 31,952 psi | 50% | 2628 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 49,690 psi | 78% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,174 psi | 60% | 2802 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 96% | 50,879 psi | 80% | 3140 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,166 psi | 74% | 2917 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 42,569 psi | 67% | 2910 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 94% | 46,499 psi | 73% | 3022 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,649 psi | 83% | 3153 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,718 psi | 75% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,053 psi | 80% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,231 psi | 58% | 2818 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,525 psi | 67% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,552 psi | 62% | 2841 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,813 psi | 62% | 2890 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,035 psi | 42% | 2546 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,937 psi | 48% | 2677 fps | 95.2% |
| Alliant Reloder-26 | 57.2 gr | 80% | 29,051 psi | 46% | 2664 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 41,959 psi | 66% | 2940 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 48,167 psi | 75% | 2956 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,813 psi | 62% | 2890 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,148 psi | 66% | 2822 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 42,525 psi | 67% | 2923 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,370 psi | 76% | 2969 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,350 psi | 63% | 2858 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 43,337 psi | 68% | 2881 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 94% | 49,864 psi | 78% | 3028 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,878 psi | 77% | 3012 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,635 psi | 54% | 2697 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,330 psi | 84% | 3068 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,378 psi | 62% | 2956 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 39,407 psi | 62% | 2867 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 42% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,751 psi | 84% | 3028 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,574 psi | 78% | 2953 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,938 psi | 81% | 2989 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 37,869 psi | 59% | 2743 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,613 psi | 68% | 2854 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 36,622 psi | 57% | 2749 fps | 98.5% |
| IMR 4895 | <<locked>> | 80% | 52,402 psi | 82% | 3048 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,298 psi | 76% | 2963 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 44,367 psi | 70% | 2989 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 54,230 psi | 85% | 2992 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,705 psi | 78% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,002 psi | 64% | 2799 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,247 psi | 62% | 2779 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,315 psi | 52% | 2664 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 54,085 psi | 85% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,415 psi | 79% | 3005 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,118 psi | 63% | 2835 fps | 95% |
| Norma MRP | 59.7 gr | 86% | 36,361 psi | 57% | 2841 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,014 psi | 60% | 2799 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,865 psi | 80% | 3025 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,164 psi | 69% | 2995 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 36,898 psi | 58% | 2782 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 39,204 psi | 61% | 2864 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,688 psi | 43% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,457 psi | 76% | 2953 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,252 psi | 71% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,029 psi | 60% | 2822 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,840 psi | 58% | 2828 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,114 psi | 57% | 2861 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 51,590 psi | 81% | 2963 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,165 psi | 71% | 2897 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,135 psi | 69% | 2887 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 41,350 psi | 65% | 2884 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,148 psi | 66% | 2822 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,002 psi | 64% | 2799 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 49,705 psi | 78% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,247 psi | 62% | 2779 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,586 psi | 73% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,514 psi | 73% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,205 psi | 63% | 2740 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,973 psi | 64% | 2881 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,411 psi | 71% | 2897 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,240 psi | 76% | 2933 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,476 psi | 54% | 2749 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,448 psi | 57% | 2736 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,967 psi | 81% | 2920 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,199 psi | 82% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,482 psi | 68% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,479 psi | 62% | 2799 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 38,537 psi | 60% | 2779 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 50,372 psi | 79% | 2927 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,798 psi | 61% | 2795 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 29,878 psi | 47% | 2625 fps | 96.8% |
| Vihtavuori N560 | 65.2 gr | 94% | 48,660 psi | 76% | 3094 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 98% | 44,411 psi | 70% | 2992 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,580 psi | 60% | 2762 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,350 psi | 63% | 2858 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,786 psi | 37% | 2503 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,365 psi | 65% | 2848 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 93 powders for .270 Weath. Mag. loaded with the .277 | 132gr | Peregrine VLR-4. Alliant Reloder-26 delivers the highest muzzle velocity at 3,284 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,284 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 132.0 gr projectile in 0.277" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .270 Weath. Mag. with the .277 | 132gr | Peregrine VLR-4 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.