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Jim Watson · December 11, 2012, 10:33 AM

Some old guy name of Jack O'Conner made the .270 famous with H4831.

Current pressure tested data shows IMR 4831 with the highest velocity for the brand but 4350 and 4064 close enough to be worth trying for accuracy if you have some.

But your OP is not clear. Do you HAVE four different powders or would you "have to go out and buy" something other than 4895? Which I would not pick for .270 except for light varmint bullets.

December 11, 2012, 10:33 AM	#8
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,542	Some old guy name of Jack O'Conner made the .270 famous with H4831. Current pressure tested data shows IMR 4831 with the highest velocity for the brand but 4350 and 4064 close enough to be worth trying for accuracy if you have some. But your OP is not clear. Do you HAVE four different powders or would you "have to go out and buy" something other than 4895? Which I would not pick for .270 except for light varmint bullets.