RE: Sighting in a riflescope
Crank that baby up to full magnification at every distance! less you're maybe talking like a 30x at 100yds.
But my biggest scope is 14x, and at 100yds its cranked.
Sighting in is just that, trying to get your best groups dialed dead on those cross hairs. Can you shoot the same groups with a 1x scope as you can a 10x?
I find at max magnification I can hold my crosshairs dead on a smaller point than at a lower power.