RP12, I'd check my zero at multiple ranges, ie 50,100,200 etc to make sure it behaves normally. If it is in fact a bent barrel causing the bullet to depart on a tangent to the line of sight, you may be able to compensate enough with the scope or the rings to get it zeroed at one particular point, but it will likely not even be close at any other range, and get worse as you go out from there. If I'm thinking this through correctly.