Barrel wear gauged with 30-06 round

Barrel wear gauged with 30-06 round


Searched like mad on the forum but can't find the info....Can someone put up a link or the info.....Thanks Charlie

If you put a 30-06 ball cartridge in the end of your barrel, depending on how much of the bullet is showing will tell approximate muzzle wear. Ideal is 3/16" or better of the bullet showing between the casing and the end of the barrel.
https://www.milsurps.com/images/impo...l_bullet-1.jpg

Quick question does all "30-06 ball" have the same bullet "shape"?

The way I was always taught, and the way they explain it at the south store, is you must use "ball M2" cartridge because of the shape and olgive of the bullet.

This may all be wrong, someone else can chime in here. please


Regards: Thumper

Correct, it should be a GI m2 ball round, not a commercial. On Ball M2, it is approximately 1ME per1/16". 1/16" showing is a 3, 2/16 (1/8") is about 2 ME, 3/16 showing is about a 1 ME, 4/16 (1/4") is about a 0. This info was from a CMP sticky awhile back.

https://www.milsurps.com/images/impo...ndmuzzle-1.jpg

Thanks I have 1/16" showing.....Charlie

About a 3 ME. I have had carbines with a 3 ME. Still capable of decent shooting. You can have it counter bored, also, to improve group. I would hang it as per CMP instructions and try it. You may be surprised.

There is also a gauge you can buy.

M1 Garand M1 Carbine 1903 MUZZLE GAGE 1903A3 : Barrels at GunBroker.com



https://www.milsurps.com/images/impo...zlegauge-1.jpg