All the guns that I have sleeved in recent years have all been proofed for 2&3/4" chambers . Thats a lot higher service pressure than there original 2&1/2" often black powder proof .Never had any problems in proof . Ok not wise to shoot the max loads all the time but its the actions that usualy show the strain not the barrels . As to the old complaint that the sleeved barrels are heavier than the old worn out barrel ,well what did they weigh in at ex works 100 years ago before they were bored up .020" and had walls of .030" plus ?
