I bought a new Bushnell Trophy 3x9x40 scope and weaver one piece base and ringsfor my Remington 30-06. Installed them went to a gun shop and had it bore sighted. Finally got it on a target at 50 yds its shooting 6 inches low and my elevation is as far up as it will go. Dont want to mess up my new scope what can I do to make it shoot higher?