I'm going to buy a second barrel for my Savage short action. This new barrel will be for target shooting out to 1200 yards only. What I want is the cheapest round to reload that will get the best performance way out there. For example the top 2 calibers in the running right now are the 223ai and the 6mmbr. I have to admit not knowing much about target calibers, so if anyone has anymore insight let me know. I am factoring barrel life in the cost of reloading, and availability of components is also important.