257...if you reload for the .350, Nosler recommends their 180 .357 Petition. At 2000-2200 fps it would be like a .357 Magnum rifle....and little kick... Also the 180 Hornady Single Shot Pistol bullet...spire point....2500 fps and would do a nice job on the piggies...

Bob

If you can not deal with reality, reality will deal with you....