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doofus47 · November 1, 2012, 11:51 AM

I would figure that you would start with a rifle chambered to 223 and then change to a 243 barrel. Shouldn't be hard. You will have already bolt that will mate with your cartridge base and a gunsmith should be able to headspace the new barrel to the receiver pretty easily, I should think.
I don't even know if .243 barrels come with a wide variance in rifling twist rates.

November 1, 2012, 11:51 AM	#2
doofus47 Senior Member Join Date: June 9, 2010 Location: live in a in a house when i'm not in a tent Posts: 2,483	I would figure that you would start with a rifle chambered to 223 and then change to a 243 barrel. Shouldn't be hard. You will have already bolt that will mate with your cartridge base and a gunsmith should be able to headspace the new barrel to the receiver pretty easily, I should think. I don't even know if .243 barrels come with a wide variance in rifling twist rates. __________________ I'm right about the metric system 3/4 of the time.