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Should go harder than 223 AI

We will know soon enough

I found with the 450 Bushmaster that bolt guns went much harder than gas guns as you can happily increase the pressure

This may not...

Had a couple of 22 Nosler AR uppers, went fairly well, I have some dies, tons of brass & a reamer :)

Coincidentally I sent one away to be made on a Tikka last week along with a 224 Valkyrie :cool:...