Have a Remmy 700 SPS Tactical and the dealer sold me a one piece base with medium rings. Just got in my Bushnell 5x15 and it's shooting low but have the scope adjusted up as much as possible. Base is a type of picatinny rail it looks like and am wondering if switching to a Leupold base with low rings would solve the problem? I don't have much experience with this and would appreciate some input. Thanks!