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Old July 17, 2010, 03:11 PM   #1
Join Date: January 3, 2010
Location: Carbondale
Posts: 60
What caliber is this blank for?

I have an 18 inch 1" dia barrel blank that I bought at an auction. I slugged it and I get a bore measurement of .443 and the rifleing is 1 in 16". It is marked "45 cal" any ideas what I should chamber it for or what it was designed for? I thought I could use it for a 450 bushmaster but now I'm not sure.
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