I've been inspired by some of the discussions of people trying to build K-frame .32s, and have decided to try it myself and make a K-frame .32 H&R Magnum. I have found an old Model 15-3 and just need to find a cylinder and barrel, and then refinish.

I've read that a Model 17 barrel can be bored out to .32 caliber, and I've found a couple of gunsmiths who offer this service. However, the only Model 17 barrel I can find is a 17-4 from Numrich. It's a nonpinned barrel. Will it fit a 15-3 frame? (I realize the barrel will need to be cut for the pin, but are the threads the same?)

Sorry if someone has asked this before, but the number of posts with the term "pinned" is simply overwhelming.

Thanks,
Whisper