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Johnny Peppers · 07-27-2001, 07:02 PM

Most military barrels that screw into a receiver are properly indexed at manufacture, but are normally short chambered. The headspace is then set by reaming to the proper depth.

During WWII Marlin had a contract for replacement barrels for the M1 Rifle. Due to some kind of slip up, the barrels were not indexed and most had to be discarded.

07-27-2001, 07:02 PM	#7
Johnny Peppers User Join Date: Jun 2002 Location: Calion, Arkansas Posts: 1,042 Thanks: 0 Thanked 1 Time in 1 Post	Re: Barrel indexing Most military barrels that screw into a receiver are properly indexed at manufacture, but are normally short chambered. The headspace is then set by reaming to the proper depth. During WWII Marlin had a contract for replacement barrels for the M1 Rifle. Due to some kind of slip up, the barrels were not indexed and most had to be discarded.