Give Glen Seekins a call , probably won't get him to answer the phone but he will call you back. I have a set of his rings on one of his bases on my 260 and they are as good as any I've every used including Nightforce , Badger Ordnance , Leupold MK-4 , IOR , and USO !!! well worth the few extra dollars and cheaper than alot of those just listed.
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