I had relined a Winchester .22 rifle. It turned out pretty good. I purchased the liner and drill from Brownell's, along with some Acraglas Gel. A full length drill, liner, and Acraglas, set me back about $150. I had a .22 LR chamber reamer already. The drill has a rather large pilot, so you can just use a variable speed hand drill. Be sure to use plenty of oil. No need to be fussy, if the liner fits snugly, you are good.
For a revolver, you won't even need a chamber reamer. You will have to rig up, or buy something, to cut the forcing cone. Do that first, before gluing in the liner. I cut the chamber on my rifle, applied the Acraglas, slid in the liner until it contacted the bolt face. Perfect headspace. 8 hours later, after the Acraglas hardened, I took a hacksaw, and cut the liner at the muzzle.dressed up the muzzle with a file. Cutting an extractor groove with a jewelers file, afterwards was simple.
If I remember correctly, the drill is a 5/16", If you are handy, you could get an extended drill bit, or braze an extension on a regular bit, and use that for the shorter handgun barrel. I might even have the cut off piece from my rifle barrel left, if I can find it.