You've gotten a lot of good info and some valid opinions...

Originally Posted By: nhunter
If the sleeving was done properly in England, the gun so marked and proofed, is there any disavantage to the sleeved barrels other than not being original?


I've seen some ugly "sleevers" wearing English re-proofs. All the marks mean is the barrels didn't blow up on a particular day- they offer no guarantee of balance or regulation.

All guns (including sleevers) need to be judged on their particular merits. If a sleeved or gun, or one in need of sleeving, suits your plans, aesthetic, and wallet, go for it.

For my money, the poorest value will always be the gun with "borderline" barrels.

YMMV