Barrel Sleeving

[J.B. Books]

I am curious. Why did you have only one barrel sleeved? Pitting, thin barrel walls? Is the sleeved barrel still a 20 ga?

[George M. Purtill Member #28]

Would someone explain to me and similarly situated dunderheads (that's what my 5th grade teacher called me) what barrel sleeving is and how it is accomplished.

[B. Dudley]

Originally Posted by George M. Purtill

Would someone explain to me and similarly situated dunderheads (that's what my 5th grade teacher called me) what barrel sleeving is and how it is accomplished.

Ribs removed. Barrel cut off at about 3.5" from breech. Monoblock is reamed out. New tube is profiled/struck and turned down to fit inside of original monoblock. The tube is either soldered in or welded to monoblock. New tube is chambered and rim cut. Ribs re-installed. Barrel set struck/polished and blued.

One can sleeve gauge to same gauge depending on wall thickness or can step down one gauge.

You are thinking of mono-blocking. The two terms are commonly referred to as the same.