Actually, of the three of us who still hunt hogs on this particular 450 acre family plot, noone uses a 30 cal.
We use 270, 7m-08, and my old 6.5 x 55.
This March or April I hope to change that by using my Marlin 1895 in 45-70 :-D
I'm currently working up loads using the Sierra 300gr bullets with RE 7.