I've got a cheap vx1 4x12 lr on top of a tack driving winchester 70 sporter 25 06 and I took it out to the range the other day and the dots were right on at 300 400 and I hit the 550 yard gong with it too
at a local prairie dog town I hit a 450 yard prairie dog with the 1st shot with the same rig
so as far as i'm concerned i've got a 500 yard antelope / deer rifle and yes the dots work for me
