As this was a response to me, drooping was not the first option offered. Even so with rings that work, drooping v. shiming is prefered as it's more stable, inert to weather, gives the greatest adjustment range possible and allows the scope to sit in near "zero" state.
It's funny how guys will spend thousands of dollars on a gun and scope, maybe spend tens of thousands on a hunt, and will try and cheap out by using coke can shims and felt pads.
ORIGINAL: USMC PMI
Had this problem in a Weatherby Vangard rifle, ended up being the wrong mounts. The spacing allows you to fit Remington bases on the Weatherby but the height of the rear base is way off. I would check the bases before paying someone to "droop" your rings. Try a different brand or style of bases if you are sure that you have the correct ones. It is possible that the scope is not tracking properly but if it is new most likely not the problem.