Having used some very popular powders for .270 in the past (H4831 etc) with good results, I am now looking to find something with a faster burn rate as part of some trouble shooting I am doing (scuse the pun).
Has anyone experimented with faster powders and how fast have you gone (sensibly) ?
I need something easy to get hold of.
IMR 4064? N140? R15 or even Varget?