Thread: Powder Choice, 270 Win with 100gn Projectile

Ok so I picked up a couple of hundred 100gn bullets for the 270Win, because they were a good price, because I thought I could practice on culling turkeys my mate wants rid of - at a little distance, and of course to obliterate the occasional magpie or harvest a rabbit or hare. Yes, I understand they don't have the BC to support real long-distance shooting, but I reckon 300m with prior ascertained (ethical) accuracy should be feasible.

Anyway, I'm looking at powder choice, (assuming I can choose), on two main criteria, accuracy and avoiding undue wear on the barrel. I'm not planning to bang out 5 shot consecutive strings and am prepared to let the barrel cool after say 3 shots.

So here's a list of powders I've culled data for from manufacturers online info. I'm interested particularly in the benefits of a lower volume powder (more shots per cannister), vs higher volume (assuming case fill is an accuracy/consistency issue). Also, the lower volume powders, while dropping a bit on velocity, also drop on pressures. I'm assuming this equals less heat and often less pressure, therefore less wear on the bore and throat. Correct?

I have a 24" barrel in good nick, suppressed. WIN LR Primers are listed for each load. Only H4350 / AR2209 reaches close enough to 60gn to warrant considering a magnum primer.

So, of the following list what would be your top three choices and why?

cheers.

Hogdon

CF223 - 53.0gn/3356fps/54900PSI - 55.8gn/3514/62900PSI

H335 - 41.0gn/3058fps/45300CUP - 43.5gn/3185fps/50200CUP

H380 - 50.0gn/3160fps/46200CUP - 53.7gn/3274fps/50300CUP

H4350 - 56.0gn/3258fps/44000CUP - 59.4gn/3401fps/50200CUP

IMR3031 - 45.5gn/3139fps/44700CUP - 49.0gn/3339fps/50400CUP

IMR4895 - 48.0gn/3180fps/47900CUP - 52.2gn/3367fps/51500CUP

IMR4064 - 48.0gn/3116fps/40800CUP - 52.7gn/3380fps/50100CUP

WIN760 - 53.0gn/3262fps/4600CUP - 56.0gn/3383fps/50700CUP

ADI

AR2206H - 47.0gn/3298fps/4700CUP - 50.0gn/3401fps/50200CUP

AR2208 - 48.0gn/3232fps/47000CUP - 52.0gn/3397fps/50200CUP

AR2209 - 56.0gn/3258fps/44000CUP - 59.4gn/3401fps/50200CUP