im wanting to build a savage 110 and have found numerous parts that have a high appeal to me. my main question is whether to choose the 7mag or the 280 ai ? any insight would be great. as far as i have seen the main difference is the recoil and +- 25yds. is this true? would it be cheaper to load the 7mm as to the 280ai? what loads would be best for a 1000yd gun on deer?