Re: what to do with my factory rem308 vsf
Aside from lowering recoil and making a smaller hole in the target, you cannot beat a given cartridge by sticking a smaller bullet in the case (contrary to popular belief). Equal bullet weight for bullet weight, then yes you can beat the larger with the smaller. The fact is, larger calibers have better potential ballistically speaking. A 7mm will have higher BCs than 6.5s. A 30 cal will have higher BC's than the 7mm, the 338 will have higher BCs than the 30s etc....
If you want less recoil, go with the 7mm-08 or 260. Otherwise, stick with the 308. Heavier bullets with higher BCs with a bigger hole in the target.
If you want something more 'sexy', then go with the 6.5x284.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.