Buffalo Bore is marketing a non-+P 158gr. LSWCHP they say is safe for all revolvers including alloy frames. They claim it leaves a 2" barrel at 880 fps, with reduced flash and a soft-lead bullet with a large cavity for enhanced expansion. If the claims are true it would be a fine carry round in an Airweight. I carry an all-steel J-frame so I don't worry about it, but I may try that load. I'd bet it has pretty hefty recoil in a lightweight gun.
I would agree with you about almost any bullet but the LRN bullet in a .38 Special. You do realize the LRN bullet has the nickname of "The Widow Maker" right? The LRN bullet that was originally loaded in the .38 Special performed so poorly it gave the .38 Special a bad reputation that to some point still remains today. IMO the LRN bullet is the worst bullet to use for SD. I would however use a LSWC/HP without worries like in the FBI Load. I highly recommend you rethink using a LRN bullet in favor of a LSWC/HP bullet instead.In my M37 I don't take a chance with anything but 158 grain LRN. 45 years old and still shoots great. No cracks. I would not want to be shot with them. I believe they would do the job just fine. I carry the exact rounds that I practice with, and it seems that with a snub it does take a little practice to be comfortable with using it for SD.
Peace,
Gordon