I'm looking to build a 270W on a Win 70 receiver, the difference on this one is that it will be the first I've done with a Proof carbon barrel. The only Proof blank I see available in 22" (will be using a suppressor) is 7.5 twist which I'm afraid may be too fast for the 140-150s I intend to use. Can anyone offer any insight on this option?
I don’t think you’ll have a problem with RPMs myself using hunting bullets. The Swedes been using 7.5-8 twist for years without an issue. I kinda think you’ll like what you see with lighter bullets turned up in RPMs myself.
