It doesn't matter what scope you have,if you bang them around long enough, sooner or later one will fail.One failure just means that particular scope couldn't take it,the next one may last for 10,000 rds.I'm sure most of the the scope manufacturers
have had similar failures.Feed back from shooters lets them know what works and what dosen't. Bob Mileck used to say he had a bushel basket full of scopes that haden't stood up to recoil. That was when the .44 was king,look how far scopes have come since then.
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junebug