RE: problem sighting in rifle
How high your scope is monted from your gun barrel?
The bullet and scope intersect at 100yrds.Thats your zero. I'm not sure of the distance your crosshairs and muzzle are in inches.But generally it is about 2.5"-3".If you have higher mounts that could be the reason why its
shooting a little low for you.In reality it is not going to make a difference
to the animal,unless you do a head shot.But a well placed shot will kill the animal.