The 38-55 Target BC barrel... 28 inches... heavy/bull taper.
I know, what a waste of a good cartridge, but the bore lends itself to oversize bullets, mine does best with .380 dia bullets, just not that many bullet choices. And the throat is a little tight. On the other hand there are some good choices to go to. 405 Winchester (great), 40-65 Winchester, 41 Magnum, 414 Supermag, 10mm Auto (not sure) and I bet others here can come up with ideas. Just saying a very good doner barrel.