Me and my bud took 2 hogs a couple of years back, using his 300 win mag. We were using 150gr corlocks and failed to get a pass through on both hogs at 40 yds. These were 200 and 250lbs. The 250lb'er I shot in the vitals and the one he shot was in the neck. I would expect the one to the vitals not to pass through as this was a pretty thick hog, but the one in the neck ? I think sometimes these fast guns at close range just explode or mushroom way too much, but then you shoot a thin skinned animal like a deer and they dont mushroom. Go figure. I do believe you need a tough bullet for hogs and a rapid expander for deer, but theres has to be a medium. I like Hornady's