I just bought a 4-12x40 trophy xlt rifle scope with an adjustment of numbers on the bell. What is it?
On the bell there are numbers and it can rotate. What is this feature? How is it used?
Optics - Bushnell - Trophy XLT Riflescope 4-12x40 Matte Multi-X
Answers & Comments
This is a parallax/quick focus adjustment. Dial the ring the the approximate range that you are sighting, or look through scope and adjust to sharpest focus. Parallax is an optical distortion caused when your line of sight is not precisely centered in the scope. The adjustment minimizes this error. Happy Hunting!
http://www.bushnell.com/getmedia/c8da84df-a5a0-41f9-bfe0-e29e3577b5ed/Trophy_Riflescope.pdf?ext=.pdf
That is a parallax adjustment. You set it for the distance you are shooting at. It appears to be marked in both yards and meters. This adjustment assures the reticle does not appear to move when your eye is moved slightly from side-to-side. Set it for 200 and look at a target at 50 and move your head very slightly side-to-side and you will see the difference.