I've been contemplating a "varmit" type rifle and Im looking for the most flat shooting to say 3-400 yds. Looking over ballistics, it is looking like a .270 with (correct me if Im wrong) a 90 grain bullet will flat out smoke a 22-250 with a 50gr. bullet, not only in ballistics but also in down range energy (more knock down). I have a couple fields I regularly deer hunt that are a good piece across and are just slam loaded with foxes. Will the 22-250 still have any umph left at the end of the road? Enlighten me on what you think would be your best recommended high powered flat shooting gun.