Back to 'sleeving'...
Probably a better word would be 'jointing' as "sleeving" almost seems misleading and "monoblocking" is a misnomer in the case of Parkers and other old doubles where the two barrels, the lug, and the rib extension are four separate pieces. Monoblocking is the process of machining and boring a solid one-piece (mono) block of steel alloy to the shape and configuration to become the breech section of the two barrel tubes, which are then jointed to it.
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"I'm a Setter man.
Not because I think they're better than the other breeds,
but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture."
George King, "That's Ruff", 2010 - a timeless classic.
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