I am considering purchasing a PDA and X-bal for my Nightforce scope to improve my long range accuracy, but I am not sure it would be money well spent as I only have a .243 rifle and with a 1 in 10 barrel its only able to stabilize bullets up to 75grains. I have tried 100 grain bullets and they are all over the place. I am currently only able to shoot at ranges up to about 500yds on my local farm anyway so would it be a waste of money? Would I be better off just sticking to drop charts for windage and elevation compensation? What do you think?