As a new owner of S&W 686+, 7 rounder and a S&W 642 (new to revolvers period) I need help with selection of the .357 and .38 ammo? First, what kind of ammo/grain for home defense? JHP? Second, ammo for range practice? Thrid, at what grain in the .357mag is the recoil less? Fourth, .38 or .38+P ammo/grain for carry? Will pay more for a brand name on this question... Thanks for any input.