Accuracy Improvement

[cincinnatus1]

I have a nearly new G20 (3rd generation) that doesn't shoot very well. I'm getting 12" groups at 25 yards, shooting over a rest. The ammo is Winchester 175-grain Silver Tip Hollow Point. I got somewhat *worse* results with Remington 180-grain Metal Case. I know that I might not be the best shooter in the world and the gun might not "like" this ammo, but I think there is more to the story.

Any ideas on what I might do to improve the accuracy? I'm not expecting miracles. If you've covered this already, please let me know where I can find the info.

Thanks.

[JR]

I have never seen a single Glock shoot that bad.
You can start swapping parts if you like but I figure something else is wrong. Have you asked another shooter to try and produce a group?
If you want to ship me the gun I will be happy to test it for accuracy. If it really is as bad as you say I will install one of our barrels.