ND,
3/8" hardwood is all I shoot. Make 'em from ash, oak, walnut, maple and some cherry.....even made a few from hickory. I like them a lot, but never hunted hogs. Most everything I've hit with them was a through and through. I have made some for a friend that does hunt hogs, and he says they worked very well.....but I cant say that for a personal fact.
Here's a few pic's hope it helps ya some.
rich