Hi I just cashed in a little stock I had in Exon Mobile and am going to buy me a good deer rifle. I am going to get reloading equipment too and a scope too. I don't know if the 257 Roberts or the 243 winchester is best in the kimber montana rifle because it is a short action is the 243 best in this rifle? There are a lot of factory ammunitions also available for the 243 winchester but someone said that they burn up barrels faster. I think the 257 shoots a bigger bullet so if I want to use it for something bigger in the future I wonder if the 257 is better?