The rings were 30 mm, dual extension Leupold rings. They were not lapped. The ring portion were apparently over sized, and the rear base was apparently undersized. The temperature was about -5 centigrade. Cool, but mild.
The rings that came to the rescue were Burris, one inch, dual extension rings. I used the paper adhesive that came with the rings, figuring it cannot hurt. The rifle now is very accurate.
If you have a rifle that is giving you fits, changing the rings might be worth a try. Up until this, I thought they were fool proof.
