I’ve acquired an old Parker Lifter.  Came with 2 barrels serial numbered to the receiver.  1st barrel set is 10g 32”, not sure of chokes, need to measure them.  2nd barrel set is 10g 28” but sleeved with a brass lining to 12g choked C/IC.
 
Call it blasphemy if you will, but are brass sleeves too soft to even bother Briley or Mike Orlen to add screw-in chokes for me?  Or would they be OK as long as you don’t over tighten and strip the threads?
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