Bought this a while back after watching Jim Shockey in the Yukon. Amazing accuracy and adaptable to multiple calibers. Works on iron sights or scopes. Around 100 bucks but I went through that much ammo trying to adjust sights before. Good investment.
https://www.cabelas.com/shop/en/site-lite-sl-100-mag-laser-boresighting-system
https://www.cabelas.com/shop/en/site-lite-sl-100-mag-laser-boresighting-system