Barrel Sleeving

[Phil C]

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[Phil C]

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[George M. Purtill Member #28]

Thanks Phil
That is a mono-block and very nicely done.
Mono-block jobs always suffered from the tell tale joint.
Sleeving has always implied to me an insert running the full length from breech to muzzle. Very hard if not impossible to do in the same gauge.

[Dean Romig]

The term "mono-block" refers to a process that is actually done slightly differently.

A 'mono-bloc' or "mono-block" is actually a forged steel block or "lump" that is machined as a one-piece (mono) base, with lugs, and bored to predetermined chamber sizes and over-bored on the forward end to accept tubes or sleeves machined to extremely close tolerances to be fitted and secured into the 'mono-bloc'.

'Sleeving' certainly borrows from the 'mono-bloc' process but differs in that the forged block of steel used in "mono-blocking" is replaced by the shotgun's original breech, chamber, lug section having been cut off just in front of the chambers, then machined to accept new barrel tubes.

'Lining' barrels is yet another process whereby the bores are machined over-size and new high-stress alloy liners are inserted and secured in the original barrels. This process was made popular by Teague of England and I believe they have stopped doing it. The process was very costly and some very pretty but very thin-walled Damascus barrels were ruined in the process.






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[C.O.B.]

Just an FYI Teague was recently sold maybe to Westly Richards but I don't remember and the new owner will be doing this process. If you have back issues of Shooting Sportsman that's where I read it.

[Opening Day]

Originally Posted by Rich Anderson

Just an FYI Teague was recently sold maybe to Westly Richards but I don't remember and the new owner will be doing this process. If you have back issues of Shooting Sportsman that's where I read it.

W&R bought Teague a few years back, but they are only producing the Teague interchangeable choke tubes.

[Bill Murphy]

That isn't anyone's monobloc. Thanks for explaining, Dean. However, it's nice to know someone to take over the reins of sleeving.

[Aaron Little]

Thank you for showing my work and the kind words of my work Phil. Likewise thank you to the forum members who have also complimented my work.

Most of my work involves large bore double rifles; shotgun to rifle conversions, regulation, complete barrel sets, and manufacturing. I also do stocking, refinishing, checkering, color case hardening, the list goes on. I believe this gun was the first shotgun I've done, granted I've done plenty of sleeving work involving shotgun to rifle conversions. The shotguns are a welcomed relief from the big bore rifles, my shoulder thanks you! The original direction I wanted to go in before attending gunsmithing school was in sporting clays shotguns, how I got to double rifles and vintage shotguns escapes me but I thoroughly enjoy the work.

The engraving on this project was done by John Todd out of Lakewood, CO.


Aaron L.
A.M. Little Bespoke Gunmakers LLC
682-554-0044

[wayne goerres]

Very nicely don Aaron. Your seem is nearly invisible. I have tried this myself and it ain't easy.

[Aaron Little]

Yes, the seam does hide well. The only sign you will see of the job is a slight discoloration of the weld. The micro-TIG was done by Micro Precision Welding. I can do many things, welding isn't one of them.

I'll try to find some pictures of seams unwelded.