Hi Folks: I'm Murffie, an elderly deer hunter from Minnesota (poor Vikings! Gophers! Timberwoofies!). Been hunting deer for some thirty years mostly with a Browning 30-06 semi. However, this year I am relegated to hunting closer in to Minneapolis. This is shotgun only territory. Picked up a Mossberg 500 12 Ga with rifled barrel. Am using Remington sabots. Had to replace the sights. Put on some Tru-Glow sights last night. Now I need to sight it in without going broke. Those sabots are $$$. Can anyone help me? Tried this a.m. at an indoor range and cant seem to get the sight to adjust very well. Murf.