Ok, so i've got all the parts I need to put my rifle together (a savage model 12 if it matters) The rings are "low" rings and i have a weaver 20 moa rail. i put it all together and need to slide the scope back farther so I am in a more comfortable shooting position. My question is should I get taller rings and have a little bit more adjustment or should i trim the rail and gain upto "3/4 which would be a much wider range of movement. The problem is the rail is more expensive then the rings but trimming it gets me the most adjustment then using taller rings... What should i do?