I just purchased a Vortex Sparc AR. I purchased this to use for close range (
Has anyone had similar experience? I was considering adding a plastic shim to the Vortex spacer plate, but wanted to see if anyone else had similar experiences.

Shooting on 6.8 with 16" ARP 5R. I had my scope sighted at 200 yards and re adjusted to achieve 25 yd zero and had no problems achieving zero.

Thanks for your input.