I am going to build a new rifle and I cannt decide what caliber I want. This will be my precision rifle for the PD and because i am suppling the rifle and ammo the Chief and the higher ups dont really care what I use as long as its nothing exotic. I was leaning towards the 260 just for something differen. What I would like to know is if the 260 has better stopping power out to 500+yds than the 308 out of a 20" barrel. I would also like it to be able to bang steel at 1000yds. Any info you can provide would be great, also anyother calibers you would suggest.