Before you test any "match" ammo, make sure that you get all the copper fouling out of your barrel. You might want to try CCI Standard Velocity in your Ruger pistol. I get mine from Dick's for around $25.00 per brick of 500. For a reasonably priced ammo, it performs very well. I do all my ammo testing at 50 yards from a machine rest. Any ten shot groups under 1 1/2" is plenty good. At 25 yards and less, you will probably not see too much of a difference in ammo brands.
I stopped in at Dick's @ Jefferson Pointe/Apple Glen in Fort Wayne and bought a 500 rd brick of CCI SV for $25 on Saturday. Thanks for the info on that deal. Gonna give it a shot next weekend.