Posted By: charlesb
Beating a Scope into Submission - 10/06/14 03:08 PM
Recently I came into possession of a BSA 'Catseye" 4-16x40 scope that came attached to a rifle I was buying, a Savage 25T in .223 Winchester.
The scope gave me fits.
Even though it had 1/4" clicks at 100 yards, I could get it to shoot either 1/2" to the left of the bull, or 1/2" to the right - but not on the bull itself. I did get good groups, though.
Then I took the gun home and cleaned it... When I returned to the range, the elevation was OK, but now it was shooting 3" to the opposite side of the bull from where it had been!
Scope mounts and rings checked out OK... I got to thinking, waving away the wood smoke that this generated and finally thought about tapping the scope next to the adjustment barrels with the butt of a plastic-handled screwdriver.
Next time out, I would give the scope a few good taps with the butt of the screwdriver handle after every adjustment, and it started behaving itself. Now it shoots directly into the center of the bullseye, and stays put between shooting sessions.
It just needed a little judicious, gentle tapping to start working well enough to get me by for the time being. It gets all of the internal parts settled into place so that it holds its adjustments.
I thought I'd mention this technique in case somebody has a misbehaving scope that they can't replace right away.
The scope gave me fits.
Even though it had 1/4" clicks at 100 yards, I could get it to shoot either 1/2" to the left of the bull, or 1/2" to the right - but not on the bull itself. I did get good groups, though.
Then I took the gun home and cleaned it... When I returned to the range, the elevation was OK, but now it was shooting 3" to the opposite side of the bull from where it had been!
Scope mounts and rings checked out OK... I got to thinking, waving away the wood smoke that this generated and finally thought about tapping the scope next to the adjustment barrels with the butt of a plastic-handled screwdriver.
Next time out, I would give the scope a few good taps with the butt of the screwdriver handle after every adjustment, and it started behaving itself. Now it shoots directly into the center of the bullseye, and stays put between shooting sessions.
It just needed a little judicious, gentle tapping to start working well enough to get me by for the time being. It gets all of the internal parts settled into place so that it holds its adjustments.
I thought I'd mention this technique in case somebody has a misbehaving scope that they can't replace right away.