If groups ain't round...things are SCREAMING "mechanical".
POA/POI will not shift,with parallax nailed.
What reticle are you gunning(I'm assuming Duplex)? A 10x MQ would settle alotta mechanicals down.
'Tis AMAZING,what a scope swap away from Reupold,does to an equation.(grin) Hint.
Thank me later.
Hint.
Laughing!.....................