Leapers utg riflescope - UTG Pro 3-12x44mm 30mm Tube Compact Rifle Scope, Second Focal Plane

I bought this scope for a newly built AR-15 (my first for this platform). Very nice features, well designed and well built. As I zeroed my rifle for the first time I was not able to shoot consistently, even on a good bench rest (sled). 30 rounds later and my shots were still not consistent. At this point I will mention that the rifle is chambered in 458 SOCOM. The mounts had all loosened on the scope, so I tightened everything up and tried another 5 rounds. Still not consistent! I believe the scope internals have loosened do to the high recoil of this caliber. That being said I would caution anyone from buying this scope for large caliber rifles.