The problem with shooting high pressure rounds in revolvers is that the latter have the barrel-cylinder gap; high pressure gas and powder residues act just like sand blasting and cause excessive and premature top strap erosion. Its why Ruger only offered the .357 Maximum Blackhawk for a short time. These revolvers suffered greatly from this erosion.
Hmm. I'm the proud owner of a new Ruger SP101. I fire mostly .38 special but always end a practice session with some .357 loads. Are you saying I bought a pig in a poke? Hope not, I really like the gun.