You should have not trouble shooting those 40 gr with 1-14 I have shot them in mt 22-250 and it has a 1-8 . Not much trouble going faster twist , it is going to a slower twist that normally causes trouble. I run some 36gr VG in my 1-8 twist and if I push them much past 4000fps they can blow up before they get to the target, but that is an extreme over spin.
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