I am going to load some 7mm Rem Mag's. I have in the past shot 150gr Sierra's, and they shoot really good. These are factory Federal Premiums I should add. I am wondering if people have found that the 165-170gr do better. I currently do most of my hunting out west, taking shots between 250-500yds shooting mostly mule deer. I will be shooting some elk with it. I also do some whitetail hunting in which running shots are fairly common so I do like to try to shoot as much velocity as possible as it seems to help me with these shots a little bit. I really like how the 150gr. shoots, but I guess I have a couple curiosities. Number one, is 170gr. too big for closer shots(inside 200yds)? And as far as the longer shots, I know the heavier bullet is supposed to be better, but do you think the 150's would be alright still? Any advice would be appreciated. I've never actually reloaded before, alwasy bought factory stuff, so I am kind of new to this whole thing.