I don't really care for any of your choices...
The caliber is unimportant. Take the RIFLE that you can shoot the best from field positions, without a rest, at a moments notice.
Well Kevin, I've seen you shoot with the Krag and you can't hit the broad side of a barn with it. Unless you have had the sights fixed, please leave that at home.
You seem to shoot the 303 pretty well, so I would take that one. 180 grain soft points should be just fine. If you want to borrow anything, let me know.
And I shot my pig with a 6.5 x 55 Swedish Mauser. It was plenty.
I don't really care for any of your choices, I'd prefer a larger cal. levergun with a peep rear sight and fibre optic front sight. Cal. should be .35 or more and bullet should weigh over 200grs....this is assuming that you are hunting/shooting in close quarters as is usually the case with hogs. I like the .356 Win.,38/55,.44,.444 and the best of all the 45/70.
all these guns i am comfortable using in field positions, and they all have open sights or peeps. the .358 norma throughs a huge chunk of lead fast and hard, but might even be overkill on a small pig.
Overkill is a very minor sin, buddy. 



























