You know I hadn't thought about a lever. I've been trying to find a reason to buy a .308 Saiga and this was getting close...but I could be talked into a big bore lever from someone like Marlin...that's a good idea.
Research...research...more excuses to go to gun websites...Lord I love my job!!
basically it depends on your environment and how your shooting area is. Thick wooded hunting i would recomend a lever action gun chambered in 45-70 or another large brush cutting round where shot placement is not very critical. shotguns with 00buck or slugs will also do. Longer shots 100-400 yds I would recomend a bolt action rifle chambered in .300 win mag or .300 ultra mag. Fitted on top of the tool just a 3x9x40 scope will suffice. Some may call these rounds over kill I just don't like tracking pigs because they don't bleed like deer or most other game. Feral pigs are some of the toughest animals on planet earth and you will be suprised how long it will take a good size pig. "250lbs or so" to give up.
I took my 235 pound hog with a .30-06 and a spine shot
i used a 110 grain bullet going approx. 3200 fps and he dropped
i also have a .45-70 but have not had the chance to use it on anything yet, but i have heard they just make a giant hole in the hog