I'll second the use of the Nyclads, they were designed to be used in shorter barrels, as the core is dead soft lead. The jacket is nothing more than a thin layer of nylon, enough to keep the bullet from leading. Unless you are trying to shoot through something dense, they should do fine.
I tried the heavy bullets in 38 years ago, all I remember about that experiment was the recoil out of a snubbie was pretty awful. I could empty a cylinder of the Nyclads or similar lighter-weight slugs about twice as fast, and with better accuracy. Different strokes, I guess. Recoil is such a subjective thing. My FLL dealer shoots a 3.5 inch Colt Defender with 230-grain Hrdra-Shoks, but says he doesn't like the 40 because it kicks too much. All I can say is, "huh?" My 40 doesn't kick as much as my 38, at least to me. See what I mean? Subjective!
PJ