I'm in the process of putting together a P dog rig for my first hunt in SD. What would be the standard or optimal power of a scope for a .223. I'm not sure of range out to (400 -500 yds?) to have to little or to much (heat waves?) I've been looking at Trijicon, Zeiss has 20x, Nikon has 24x, 32x Bushnell 24x, 30x etc.. I have a Burris Signature Select Series 4-16x44mm mil-dot.

Thanks