Thank you Wayne.
I have done some research and have notice that the majority are in fact shooting from the list you listed above. My question was generated because Cabelas was having a in-store sale on the scope in question and since I'm looking hard at purchasing a 338lm from a gentleman(don't even have a Lapua to my name yet) the price tag caught my eye as a possible "get your foot in the door" optics and work my way up from there.
I appreciate you taking the time to respond and believe that as you stated the Viper line serves its purpose, but on a 338LM might not be its place. If purchase goes thru I will keep my eyes on the Optics section in the classifieds and see what pops up. Thanks again for your time.
jrg