MK I barrel

[Raybun]

The barrel on my MK I Springfield has been counter bored smooth at the muzzle .355 diameter by 1.375 deep. Is this a normal feature of the MK I rifle, and if so, what is its' function?

Thanks

Ray

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[RCS]

U.S. Ordnance did not counter bore the muzzle, other countries have done this to rifles like the M1 too. It was done in an attempt to salvage any accuracy that might be left in the barrel

[Mike D]

Did the Greeks counter-bore?