scope mount issue?

[mnguyen84]

i went to the range to zero my scope. i failed. i turned the turret until it can't turn anymore...but i couldn't get the cross hairs set correctly. the guy at the range said I probably mounted the scope wrong. uneven screw tensions or something.

any suggestions?

[G-forceJunkie]

What rifle, scope, base, rings, caliber and distance?

[pennys dad]

pictures

[mnguyen84]

tikka t3 sporter. millet rings. weaver base. 308. 25 yard.

[G-forceJunkie]

First, try again at 100 yards. Are you off side to side or elevation? A 25 yard zero (the first time the bullet passes the line of site) is actually a 275 or so zero. While that should only take a little under 4 moa from a 100 yard zero, perhaps you just dont have enough travel to get out to 275. Something sounds wrong though. What exact millet scope, and do you know how much internal adjustment it has? Is your base flat (0 moa) or sloped like 20 moa or something? Try this, center your scope crosshairs in the scope by screwing the turret all the way down, then all the way up, counting clicks (or moa or revolutions) as you go. Then go back down 1/2 as much so you are half way in the travel. Do this with both the elelvation and windage. Then set the rifle up on a stand or bags, pull the bolt, and sight down the bore and center it on something like a target. Look through the scope and see if the crosshairs are close to your target. If the scope is really centered, the cross hairs should be about 2 above your target. If its off a little, turn the knobs till its on target. If its off a long ways, something is off mechanically with your base, rings, or scope. Try swapping the rings, front to back. Lap the rings, they may be binding the scope tube if the rings are not straight.

[mnguyen84]

do you guys use special tools to mount scopes?

[mnguyen84]

i should've bought those scope mounts with the windage adjustments. i loosened both mounts, moved the scope by hand, and tightened the mounts again.