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HankC1 · November 20, 2012, 10:07 PM

Bought an old mauser, the bore is dark but still have some shine and rifling is distinct. Noticed the rifling near muzzle is almost gone, drop a bullet with rear end first and it will go in almost 3/4" and stop. I have not shot it yet, but think I may need to counterbored it. How to do it without a lathe? Can I use a handdrill and a regular drill bit? How much oversize and how to remove burrs after counterbore? Thanks.

November 20, 2012, 10:07 PM	#1
HankC1 Senior Member Join Date: April 4, 2005 Location: Ohio Posts: 531	How to counterbore a barrel? Bought an old mauser, the bore is dark but still have some shine and rifling is distinct. Noticed the rifling near muzzle is almost gone, drop a bullet with rear end first and it will go in almost 3/4" and stop. I have not shot it yet, but think I may need to counterbored it. How to do it without a lathe? Can I use a handdrill and a regular drill bit? How much oversize and how to remove burrs after counterbore? Thanks.