What is the lightest target load to decrease felt recoil with this pistol? Might have to change ct grips?

Thanks
paul

Without re-loading, the lightest I can think of is the speer lawman fmj in 38. Im sure others will chime in with something more mouse fartish if there is anything lighter.

148 grain full wad cutter's...
Their typically loaded to about 700(ish) FPS. And are probably not even doing that out of a 1 7/8"? Just be sure you clean the charging ports well, before firing .357's out of it afterwards. In my experience, they'll print about 1"- 1 1/2" higher than the sights at 10 yards.
Much easier on my old gnarled hands!