Do boresighters usually cause crown damage? I'm talking about this model here:
http://www.sportsmansguide.com/net/cb/barska-deluxe-iron-boresighter-kit.aspx?a=431352
This one has what look to be STEEL arbors (meaning they look like they'd scratch up the crown and rifling!).
http://www.sportsmansguide.com/net/cb/barska-deluxe-iron-boresighter-kit.aspx?a=431352
This one has what look to be STEEL arbors (meaning they look like they'd scratch up the crown and rifling!).