I normally have pretty good luck with winchester ammo, I would try the 40 grn hollow points. My next choice is usually CCI. But like said you need to shoot different brands to see what your particular gun likes. I normally get better groups with hunting ammo than I do with the expensive target ammo though, go figure.

Stay away from the bulk stuff, I never have good luck with that stuff. Remington is usually the last brand I will try.

Paul