It will work fine if fitted correctly.

H&R recently changed their acc barrel fitting policy on older frames, I think they'll still fit the 357 and 44 mag to SB1 frames made 1987 and on, but the acc barrel page doesn't say that, Customer Support has been know to give misinfo a lot, so it doesn't hurt to make a second or even a third call to correctly answer your question if you really want a factory fitted barrel.
Tim