Check the scope 5 years ago I had a new redhead 3x9x32 blackpowder scope do just what your's is doing now . In fact I did just what you are thinking of doing and I love the Omega , but when the scope did the same thing with the Omega I got a new scope and all was great with the groups . Before you change guns see what it dose with open sights . Try at 25 and 50 yards . As far as what to do it's up to you .
Charlie