Originally Posted by Jon2
I am defo out of adjustment for up.
Even if you're sure
it's optically centered before you start?
We don't doubt you're out of adjustment range now. It's just hard to believe that if the scope started out optically centered (key point) that it would run out of adjustment when trying to get it on paper at 100 yards.
If it were me (and it's not, but... ) I would do this -
- watch this movie Scopes - rings by Burris Optics
- remove scope, and optically center as per the link in my post above
- install Burris Signature rings. Also, when you order them get the pack of 3 inserts (5/10/20) so you can get it lined up ahead of time. Cheapest place is Optics Planet Burris Riflescope Mounts - Burris Rings & Burris Bases ON SALE Burris Ring, Burris Mount, Burris Mount
- Use a laser boresighter aimed at a wall or object 100 yards away. Use ballistics calculator to figure out where your bullet "would" hit compare to where the laser is projecting at 100 yards; don't forget to use the correct zero, which may be 100 or may be 200 depending on your preference. Now use the inserts to move your scope up or down so that your crosshairs are at or below that point of (theoretical) impact
- Use windage screws to adjust your left/right
I've done this several times and can usually get a rifle very close to right where I want it before I ever shoot once. This keeps it at its optical center as well.
It doesn't take me much longer to do it than to type this.