Would this hold up to a 338 lapua magnum? — 2 Answers

Yes, the Vortex Vortex Viper HS LR 6-24x50 FFP Riflescope is shockproof, and is covered by the Vortex VIP warranty:
http://vortexoptics.eu/content/vip_warranty.html

VIP stands for a Very Important Promise to you, our customer. We will repair or replace your Vortex product in the event it becomes damaged or defective—at no charge to you. If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition.

You see, it doesn't matter how it happened, whose fault it was, or where you purchased it. You can count on the VIP Warranty for all Vortex Optics riflescopes, prism scopes, red dots, rangefinders, binoculars, spotting scopes, tripods, and monoculars.

Unlimited Lifetime Warranty
Fully transferable
No warranty card to fill out
No receipt needed to hang on to

If you ever have a problem, no matter the cause, we promise to take care of you.

Mark H.