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From your guys experience, what would be the heaviest gr round you would run in a 300 Win with a 1:12 barrel? I was thinking just running 190 SMK for starters and see what I can do with that.
I'd be tempted to try some 200's too. They ran great from my old 1:11. Worth a try. Remember that twist is about projectile length, so shorter bullets for weight will work better in a slower twist.
Thanks for the reply. Im building a 300 Win right now and Im still gathering parts. One thing I do have is a heavy 1:12 barrel that I got into at a good price. Just workin with what I got and can afford lol. Ill give them all a try when I finish this thing
For what its worth I contacted Hornady with some questions about their 208 Amax for my 300WM which is a 1-10" twist. The Hornady rep told me all their data was taken from a 1-12" barrel. I don't know if he knew what he was talking about but that is what he told me, I am sure you will be fine.
I have a 1-12 Schneider that loves the 220 SMK. I'm pushing around 2800 with it out of a 24" tube. I think you will have no problem going heavy with a more conventional bullet design. Though it looks as if others have had decent luck with VLD type bullets in the 200 plus range.
I think you will be fine. Several guys I know are shooting heavies out of a .308 with that same twist. Just buy a few and try it. Not much to lose if it doesn't work, more to lose if it's the better choice and never knew IMO. Good luck