If you continue with the laser idea, they will get you on paper but my experience is that the distance the laser is "sighted" must be at least 50yds. Green still isn't visible in bright daylight so subdued light is best when sighting. My particular laser gets first shot impacts about 3" high with very close windage. They do work, but not up close. Main use is for semi-auto where boreline isn't easily viewed due to straight line stock design (AR style rifles/carbines). On bolt actions, as stated by others, pull the bolt and sight down the bore.
I've had mine for 15+ years and it is a LaserLyte multi caliber (arbor) kit that covers .22 to 12ga. I tried to search the internet and looks like it has been replaced by a new model. Biggest complaint is the battery has a short life (CR2)