So far the best ammo I have found for my 317 is Federal Shok. Not bad, but not to good either. 3 inch - 8 shot groups at 15 yards with a good rest.
Ths revolver is difficult to shoot accurately due to it's light weight but I still feel it can do better.
Any other 317 owners care to share there ammo choices?

Winchester shoots pretty good in mine, not the cheaper wildcat. The sights kill me, The v notch is quick to line up but not good for accurate shooting. I just use the front sight for point shooting and can hit empty cans that way. I use my S&W model 18 if I need bulls-eye accuracy.

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JIM
NRA Pistol Instr

I shoot everything and anything in mine. It is as accurate as I am on pop and coffee cans.