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6 inches low at 15m?!

Warfighter1

Private
Full Member
Minuteman
Dec 3, 2012
26
0
44
Oregon
I inherited back my own ruger 10/22 recently (step dad hogged it for 20 years) and I had a Nikon monarch on the shelf. So I went to Wally world and got a 2 piece weaver mount and rings. I mounted it up and I am shooting 6 inches low at only 15m. The iron sights are dead on at this range. I maxed out elevation and I'm still 6 low. I tried swapping the rings. What else should I try? Lapping the rings?
 
From what I see, you are not using a ruger base. Get that first. I have a couple laying around in case you don't have one. PM me if you need one. Then see what it does, if it still low, shim it. I use aluminum beer cans, soda cans will do also.
cwmoss
 
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Are you sure the bases are on correctly (they look to be)? I would shim the rear base.
 
I also have a 10/22 base you can have for the price of postage. GH
 
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