Went to the range today with my 640-1,tried federal 158gr semi jacketed HP's,Speer 135gr short barrel,Hornady critical defence 125gr HP's,Rem 124gr golden sabre all 357,and Federal 158gr 38+P.All were shot at 7yd combat distance.
My 640 definately likes the Remington Golden Sabre.
Glad you found one it liked!
If you do your part screwing a few of those Remington's into the goof's 10 ring, you'll be fine! Which Remington Golden Sabre was it?