i just bought a carbon express crossbow.i sighted it in.n it still shots low.but my adjustments r to the max.what can i do.if it shooting low do i move my adjustments low.or hi.thanks

What kind of sights?

If you are using a scope, I think they make shims for scope mounts to solve this issue.

4x32 scope i use

What is your bolt/broadhead setup? Maybe switching to a lighter broadhead if your shooting over 100 grain.

Count the clicks from all the way from one way to all the way the other and go 1/2 way back. Both W and E. Start at 10 yds w/ field points, get arrow in centerish of target, go to 20 and see what happens w/ field points.

If you still have trouble call where you bought it and get another scope.

There's a lot of experience w/ xbows on this forum, but alas, no crystal balls, you need to give as much info per post as you can if you're gonna get by this..............

Center the crosshairs like Awshucks says then shim to make the scope point to where the are arrow are hitting. In your case shim the rear mount to point the Xhair down. Be careful if you have a 2-pc mount as may have to shim the front base also to keep from bending the scope tube. A 1-pc mount is the easiest.

I put a 2.75X rifle scope on my crossbow and had to use shims to zero it. It's no big deal.

I should have said I had to use shims to zero it AT 30 YARDS. That's the distance to my bait.

I agree with Awshucks.