When a large cases magnum isn't needed (rarely if ever actually needed), it is never a mistake to go to the larger bore size.
; The .308 is one of the most accurate, easy to load for ctgs. in the lineup. I would consider using a 180gr. PPoint, or a 150gr. to 165gr.Barnes TShock.
: I used the .308 for years in full bore competition and have nothing but admiration for it and it's ballistics.
: With VVN powders today, it will duplicate most of the 1980 .30/06 factory data - there are no flies on that round.
; I've never owned a .270 - never will, unless it's the .270 Redding or some other small cased .270 wildcat for a deer round.
: To penetrate the heavy bone or grissle plates on pigs, I believe you want the accuracy, low recoil and penetrative power of the "X" in .308 bullet diameters. Yes, they have them for the .270 as well, but more run of the mill bullets and bullet weights will work in .308 than in the 270. It's also a much more accurate ctg. to start with.
; Yes, I know someone has a .270 that shoots well. More people have .308's that blow it out of the water, though. If not the case, match rifles would be made in .270's.