Scope ?

sierra_1

I have a variable power 6x18x40 target turret scope mounted on a savage mod 93FV 22 mag. I tried to sight it in but ran out of elevation adjustment prior to matching point of impact with where the bullet was actually striking. In other words when I shot the weapon it hit very low compared to my scope cross hairs. As I attempted to adjust the scope to raise cross hairs to match point of impact I ran out of adjustment. My distance shooting was less than 100 yards. The rings Im using are medium height rings from Burris on a two piece factory mounted pic rail. At the maximum elevation possible on this scope point of impact is still 1/2 inch low at 75 yards. Left right adjust is dead on.

montanajoe

Take a good look at the mounting. First thing I would try is to shim the front ring to raise the scope.

http://www.burrisoptics.com/sigrings.html

sierra_1

Should I raise the height of the rear ring to lower scope angle to closer to bore height or raise front sight?

asphalt cowboy

Rather than shimming the rear, I would use Buris Signature rings. Brownells, Midway and others carry the nylon offset insert sets.

ern98

What brand and model of scope are you using?

tsr1965

sierra_1,

You have one of four things that was made out of tolerence. The rings, the base, the scope's adjustment mechanism, or the rifles reciever.


OK, the problem that exists, would exist, no matter which height rings you have, assuming they were both the same height. However, you might want to try swapping rings before doing anything. By that, I mean swap them front to back. If you still end up with the same result, then try swapping the scope base front to back. If that is to no avail, then what you need to do, is take the rear base off, and put a shim under the base...start with a shim in the range of 0.005-0.010". Yes that is correct, the shim goes in the REAR, not front, and it has to go under the base, not the ring. Be sure and Loctite the base screws too.

Let us know how it turns out for you. I suspect, unless your reciever is out of spec., that swapping the bases should correct the problem.

Best

perry shooter

IF the bullet strike POI is low then you need to put a shim under the REAR mount. but the burris rings are a much better Idea. When you start shimming mounts this can cause misalignment of the scope tube and you CAN/WILL damage the scope.

montanajoe

he posted he has burris rings. thus the burris link which even has a informative video.[;)][;)]

tsr1965

quote:Originally posted by montanajoe
he posted he has burris rings. thus the burris link which even has a informative video.[;)][;)]


He needs to raise the point of impact, not lower it. You treat a scope, just like a pair of iron sights. Move the rear in the direction you want the bullet impact to go, and the front in the opposite direction you want the bullet impact to go. Ideally, the rear should come up enough to center the adjustment, very close to the center of adjustment.

Best

rbfl

http://www.youtube.com/watch?v=wcRAX5OLtJE