Since I actually have a .270 Winchester with a 26" barrel which isn't too common, here's my experience for comparison. While I haven't tried Reloder 22, which will likely produce the highest velocity with a .270, I have been using IMR-4350 because so far nothing shoots more accurately. With IMR-4350 I've got 130 grain Core-Lokts chronographed at 3200 fps using 55 grains of powder and 140 grain Partitions at 3050 fps using 54 grains of powder.





















































