I'd simply forgo the 25-06 a far as punching the barrel. Go a smidge larger dia. I'd still order the brass and then run it though the die w/expander mandrel. Select a scenar and stuff the case full of 7828 and load me a 6.5-06 cartridge.
With B.C.'s of .6+ and launch speeds of 3000+ what's not to like?
