I picked up my first Glock today. A G17 Gen3 RTF. I bought two different kinds of ammo for it. Remington UMC 115 GR. MC. and 115 Grain FMJ RN. When I shot at 7 yards using sandbags to keep it steady, I shot about 2" groups with the remington, and 2-1/2" groups with the Federal. When I shot off hand, it seemed to exaggerate the group size even more. So right now, the Remington which I paid $11.99 on sale for is my favorite. Our WWB is thirteen something at our local walmart, so I haven't tried it yet.