I use 140gn Accubonds in my Win M70 .270WSM because I had quite a few failures with lighter 130gn bullets. By failures I mean the bullet just blew to pieces and failed to penetrate the hide of a big mud caked boars. I think the heavier 140gn Pill is a little more stoutly constructed compared to its lighter counterpart.
Here's two good boars I shot last year using 140gn Accubonds