Load Specifications
Load data in caliber .270 WSM with .278 | 118gr | IBEX TRD bullet and 70 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 Alliant Reloder-16.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,767 psi | 87% | 3156 fps | 99.3% |
| Accurate 4350 | <<locked>> | 88% | 57,174 psi | 90% | 3209 fps | 99.9% |
| Accurate High Country | <<locked>> | 94% | 55,303 psi | 87% | 3284 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 84% | 57,305 psi | 90% | 3156 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,970 psi | 88% | 3222 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 98% | 57,261 psi | 90% | 3271 fps | 96.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,202 psi | 88% | 3219 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,202 psi | 88% | 3219 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,840 psi | 88% | 3140 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,825 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,159 psi | 90% | 3274 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,593 psi | 87% | 3212 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,029 psi | 89% | 3281 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,520 psi | 85% | 3222 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,879 psi | 80% | 3199 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,563 psi | 86% | 3304 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,956 psi | 88% | 3261 fps | 97.5% |
| Bofors RP3 | <<locked>> | 82% | 57,595 psi | 90% | 3166 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 57,029 psi | 89% | 3281 fps | 97.8% |
| Bofors RP7 | <<locked>> | 86% | 55,898 psi | 88% | 3133 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 82% | 57,087 psi | 89% | 3173 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 57,595 psi | 90% | 3241 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,666 psi | 89% | 3186 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,739 psi | 89% | 3173 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,850 psi | 78% | 3235 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 88% | 57,377 psi | 90% | 3268 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 58% | 2018 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,014 psi | 89% | 3140 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,275 psi | 88% | 3159 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,550 psi | 89% | 3150 fps | 98.7% |
| IMR 4831 | <<locked>> | 90% | 56,884 psi | 89% | 3189 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 55,129 psi | 86% | 3245 fps | 95.9% |
| Lovex S065 | <<locked>> | 86% | 55,042 psi | 86% | 3114 fps | 99.3% |
| Lovex S070 | <<locked>> | 88% | 56,246 psi | 88% | 3156 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,359 psi | 84% | 3117 fps | 99% |
| Norma 204 | <<locked>> | 90% | 57,058 psi | 89% | 3212 fps | 97.4% |
| Norma MRP | <<locked>> | 96% | 56,840 psi | 89% | 3314 fps | 98.9% |
| Norma URP | <<locked>> | 88% | 54,694 psi | 86% | 3179 fps | 99.8% |
| Ramshot Grand | <<locked>> | 98% | 55,680 psi | 87% | 3264 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 90% | 56,463 psi | 88% | 3225 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3199 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 60% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,333 psi | 88% | 3143 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,463 psi | 88% | 3264 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,086 psi | 88% | 3219 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,145 psi | 90% | 3294 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,299 psi | 79% | 3235 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 82% | 54,476 psi | 85% | 3110 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,711 psi | 90% | 3189 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,463 psi | 87% | 3205 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,898 psi | 88% | 3133 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,042 psi | 86% | 3114 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 88% | 56,246 psi | 88% | 3156 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,404 psi | 85% | 3153 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,768 psi | 89% | 3022 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,566 psi | 90% | 3110 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,984 psi | 86% | 3199 fps | 97.4% |
| Somchem S355 | <<locked>> | 84% | 56,985 psi | 89% | 3150 fps | 100% |
| Somchem S365 | <<locked>> | 90% | 54,317 psi | 85% | 3189 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,579 psi | 89% | 3182 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 54,853 psi | 86% | 3071 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,246 psi | 88% | 3166 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 98% | 55,303 psi | 87% | 3146 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 88% | 55,941 psi | 88% | 3176 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 94% | 54,694 psi | 86% | 3205 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,797 psi | 89% | 3294 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,347 psi | 87% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,595 psi | 90% | 3241 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,316 psi | 84% | 3353 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,724 psi | 87% | 3163 fps | 97.3% |
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 3100 | <<locked>> | 82% | 37,260 psi | 58% | 2779 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 45,165 psi | 71% | 2986 fps | 98.9% |
| Accurate High Country | <<locked>> | 92% | 51,953 psi | 81% | 3222 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,227 psi | 80% | 3051 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 46,949 psi | 74% | 3045 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 54,027 psi | 85% | 3209 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 47,195 psi | 74% | 3045 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 47,195 psi | 74% | 3045 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,750 psi | 83% | 3087 fps | 100% |
| Alliant Reloder-16 | 52 gr | 80% | 41,945 psi | 66% | 2966 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,398 psi | 74% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 46,775 psi | 73% | 3038 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 47,819 psi | 75% | 3104 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,011 psi | 52% | 2743 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 36,535 psi | 57% | 2854 fps | 95.5% |
| Alliant Reloder-26 | 57.4 gr | 80% | 35,389 psi | 55% | 2867 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 47,253 psi | 74% | 3091 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 54,418 psi | 85% | 3117 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 47,819 psi | 75% | 3104 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,311 psi | 74% | 2966 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 53,998 psi | 85% | 3117 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 45,455 psi | 71% | 3009 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 47,718 psi | 75% | 3015 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,219 psi | 63% | 2864 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 44,498 psi | 70% | 3107 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 44,309 psi | 69% | 3012 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,152 psi | 44% | 1808 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,867 psi | 84% | 3087 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,511 psi | 67% | 2884 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,950 psi | 75% | 2986 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 42,583 psi | 67% | 2920 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 52,025 psi | 82% | 3186 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,528 psi | 73% | 2949 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 45,078 psi | 71% | 2940 fps | 96.8% |
| Lovex S071 | <<locked>> | 86% | 36,651 psi | 57% | 2762 fps | 95.1% |
| Norma 204 | <<locked>> | 84% | 47,587 psi | 75% | 3031 fps | 95.2% |
| Norma MRP | 59.9 gr | 86% | 41,916 psi | 66% | 3005 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 43,424 psi | 68% | 2956 fps | 98.5% |
| Ramshot Grand | <<locked>> | 96% | 52,199 psi | 82% | 3196 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,974 psi | 66% | 2936 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 44,744 psi | 70% | 3012 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 45% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,084 psi | 83% | 3084 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,777 psi | 78% | 3153 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,947 psi | 69% | 2986 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,989 psi | 66% | 2989 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 41,916 psi | 66% | 3028 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 51,474 psi | 81% | 3058 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 51,358 psi | 80% | 3074 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 46,441 psi | 73% | 3031 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,311 psi | 74% | 2966 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,528 psi | 73% | 2949 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 80% | 45,078 psi | 71% | 2940 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,271 psi | 80% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,836 psi | 80% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,658 psi | 72% | 2887 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 46,021 psi | 72% | 3025 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 51,082 psi | 80% | 3048 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 40,321 psi | 63% | 2923 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 42,569 psi | 67% | 2910 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,805 psi | 76% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,672 psi | 70% | 2946 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 43,903 psi | 69% | 2930 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 44,541 psi | 70% | 2959 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 36,912 psi | 58% | 2835 fps | 97.6% |
| Vihtavuori N560 | <<locked>> | 94% | 53,432 psi | 84% | 3228 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,482 psi | 68% | 2910 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 45,455 psi | 71% | 3009 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,153 psi | 47% | 2746 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 46,253 psi | 72% | 2986 fps | 95% |
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 70 powders for .270 WSM loaded with the .278 | 118gr | IBEX TRD. Winchester StaBALL HD delivers the highest muzzle velocity at 3,353 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,353 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 118.0 gr projectile in 0.278" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, Hodgdon Retumbo 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, Alliant Reloder-16 rank at the top here: for .270 WSM with the .278 | 118gr | IBEX TRD 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.