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dksac2 · May 22, 2010, 08:54 AM

Could just be 2 bad scopes or maybe a bad bas /ring combo, or the rifle.
First think that I would do is to remove the scope base.The ruger 10/22's have a hump in the top of the receiver from the casting
Some or worse than others.
Check the top of the receiver with a streight edge and make sure it is straight.
If not, it could have bent the base, which will bend on the scope tube when torqued down.That is why some bases are made to get around the "Ruger Hump" and have open space under the base.
I ground my own out of the base I have on ny 10-22. It's a Leupold.
Otherwise it's bad rings, bad scope or bad luck.
Heck, I know some People who use the BSA scope that is made as an air gun/rimfire combo with no problems. It's supposed to be a good scope for the money.
I would use a bolt buffer if for no other reason than to cut down on the shock and keep the metal pin that is now in the receiver from cracking the receiver. It usually takes many thousands of rounds, but I have seen the receiver cracked at the bolt stop. Never seen one cracked there when an aftermarket bolt stop has been used, I like the one made by Kidd, It has a metal pin through the middle and lasts a long time. It's about $5.00
Let us know what you find.

Best Regards, John K

May 22, 2010, 08:54 AM	#2
dksac2 Member Join Date: May 17, 2010 Posts: 62	Could just be 2 bad scopes or maybe a bad bas /ring combo, or the rifle. First think that I would do is to remove the scope base.The ruger 10/22's have a hump in the top of the receiver from the casting Some or worse than others. Check the top of the receiver with a streight edge and make sure it is straight. If not, it could have bent the base, which will bend on the scope tube when torqued down.That is why some bases are made to get around the "Ruger Hump" and have open space under the base. I ground my own out of the base I have on ny 10-22. It's a Leupold. Otherwise it's bad rings, bad scope or bad luck. Heck, I know some People who use the BSA scope that is made as an air gun/rimfire combo with no problems. It's supposed to be a good scope for the money. I would use a bolt buffer if for no other reason than to cut down on the shock and keep the metal pin that is now in the receiver from cracking the receiver. It usually takes many thousands of rounds, but I have seen the receiver cracked at the bolt stop. Never seen one cracked there when an aftermarket bolt stop has been used, I like the one made by Kidd, It has a metal pin through the middle and lasts a long time. It's about $5.00 Let us know what you find. Best Regards, John K Last edited by dksac2; May 22, 2010 at 06:49 PM.