I'm new to reloading. I have a Savage 11 in .260 and started right off with reloading, I'm 20 years old. I'm seating the bullets at 2.800" OAL. How can I know if I should be seating them further or shorter for increasing accuracy? I have a good gunsmith I work with, but wanted to get some opinions here. I don't know a lot about the lands and where it meets the rifling. I'm using Hornady A-max 140's, if that makes a difference. Thanks.