I don't have a problem with their effectiveness...just lack of frugality (ammo's expensive!)
I used to shoot at On Target near Ft. Meade and the Wm. Batargis Memorial range up towards Frederick, as well as on some family land on the Eastern Shore.
No kiddin! I shoot at On Target. I need more range time desperately, and I don't have a whole lot of natural ability either. It's a good range.