I have a large quantity of once fired military 06 brass. I have a .270 and a 25-06 rifle and want to resize the 06 brass to be used in the .270 & 25-06. What should I look out for when forming the cases and what amount of capacity difference will the new formed cases be from a commercial case? I know that I have to remove the primer crimp & trim to proper length that's not an issue.