I just installed the low Sportsmatch rings on my R7 and I'm impressed! These are the firstIt's hard to measure. I few thousandths out at the muzzle puts it a long way out. I check the barrel with a straight edge first.
Sometimes the barrel is bent in the middle. Someone sent me a R1 with the barrel bent. It's hard to see but there's a straight edge along the top of the barrel. You'll see light under it mid barrel. I located the high spots and straightened it in an Arbor press. Then reinstalled it and adjusted it in the gun.
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rings I've ever used that my vertical plane is right on the money. At 10 ft perfect alignment!
No windage adjustment needed. Will test @30 ft tomorrow. Hopefully it will still not need windage
adjustments @ 30 ft. I don't think I have excessive barrel droop but will watch my elevation
adjustments.
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