I bought a Vortex Viper PST 1-4 last June and finally got around to shooting it today. After exactly 30rds through a 5.56 AR, the reticle has rotated about 15deg counter clockwise. It's mounted in a Bobro 201 and was bubble leveled, properly torqued and loctited. It's still mounted solid and the turrets are still level.
Anyone have any experience with this? I guess I'm about to test out the famous Vortex customer service and warranty.
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