TexasCHLforum.com

If the scope and rails are factory mounted then it's not at all difficult to zero it. Bore-sighting helps (especially if you are installing new rails or rings), but is not necessary if the scope is already on the rifle. I never bore-sighted mine, even when I changed scopes.

Start out at 25 or 50 yds just to make sure you're on the paper. Your scope will have left/right and up/down adjustment nobs that you can turn to adjust the zero. Get a general zero by shooting a 3 shot group at the target, adjust the nobs to move the center of the group towards the bullseye, then repeat. Once you have it more or less zeroed at a close range, move out to 100 or 200 yds (depending on the distance you'll be shooting) and fine-tune it.