I have 3 rifles I think are ideal for those situations. A .45-70 Guide gun, an M1 Garand, and an AR in .458 SOCOM. Honorable mention to a Winchester M94.

The reason: Very rapid repeat shots.

#4 was a case study of what not to do. Don't admire your first shot. He was obviously using a semi-auto, but went so far as to unshoulder the rifle after the pig went down.

A red dot is just plain awesome in those situations, too