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Updated PTG Bullet Shaped USB 8GB with 2021 Gunsmith's Book of Chamber Prints PDF
Dave Kiff has put together 30 years of experience into one easy to read wildcat and custom chamber book. Everything the gunsmith needs to know about dimensions. Use the book of prints to check your chamber and we even have the standards for bore, groove and twist of rifling. There is also information on cut rifle twist and depth. This book of prints is a must for the wildcatter and custom rifle builder. If you see a chamber you like send it to us or give us a call and we can grind one for you..