I've been doing a lot of reading lately. Mostly about Glocks. When the article is a gun review the Glocks will glow! Some of the articles I been reading have been "Off the Shelf" ammunition review/testing. It seems that the Glock is at its best when left in the safe. When a Glock is loaded and on the firing line, it goes downhill fast. It doesn't seem to differ, bullet type, bullet weight, by 20yds the groups will open up to 6"to7", and at 25yds the groups are 10" plus. I got an old 1911a1 that I borrowed from the Army in Viet Nam in '66 that still shoots better than that . . .