yes, the typical answer these days, they cannot "repair" but simply "replace" ,IF they have the parts....simply put the barrel needs to be removed recut ( set back ONE thread) and refit,recut forcing cone ,about ANY GOOD pistolsmith who speciallizes in revolvers can do this, no need to refinish anything either............
if you knew how much needed to be "faced" off the rear of the barrel, you could flt cut the barrel, and stretch the crane as needed for proper head space BUT again its the "How much"? as you will loose "headspace" in the rear..........so ,recut ,refit the barrel (set back) no big deal....and yes looks like a "feed ramp" on a revolver.........hmmm

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dan
NRA Benefactor,PMA