You could start with my 35 cal Carcano . It's pig count is well over a ton . 250 or 275 grain rn bullet at about 2200 fps . That does put the big ones down quick . Depending on your recoil tolerance , you could try the 500 Bandit . 50 cal 500 grain bullet at 2300 fps . I have another beast rifle , 900 grain bullet . Spring is best . If you really want to come over they are having the Sweetwater rattle snake round up March 12th - 14th and it is only 30 min from my place .