Not a good one.... - Barska 4-16x50 AO Varmint Rifle Scope w/ Adjustable Objective - AC10042 Rifle Scope

This scope came on a rifle I recently ordered. For the small price difference between bare rifle and scope/bipod package, I figured what the heck. Probably should have put the difference towards a higher end scope. Just got back from attempting to zero the rifle, first 3 shots were app. 3" low, 3" right at 100 hundred yards. adjusted scope as per instructions (1/4" clicks=12 left, 12 clicks up) Here's where things go bad. I really wasn't happy with how out of focus the target was, so I dialed power down to 8x. Send three more downrange and suddenly I'm in the berm approximately 8 foot above target. I dial the power back up, and the next three impact in the 10 ring, almost touching. Dial the power down a step at a time, and with each step, the p.o.i. changes drastically, like in measurements of feet. I never went below 8x because I was wasn't sure I would hit dirt anymore. Bottom line, no excuse for a scope to behave this badly when changing power. I have shot through cheap scopes before and have seen point of impact change slightly, but never this bad. Be very careful if you make this purchase.