ALL MY REDHAWKS WEAR PACHMAYR DECELERATORS
The 357 probably doesn't really need them, but I really appreciate them on my 45 most. They take the stoopid out of the 41, 44, and 45.
I also use these guns for USPSA, and they provide ME with a high-n-tight grip, perfect for fast shooting and recoil control.
Your results may vary.
A complete endorsement for them; I have six DA Rugers, and they ALL wear them.