You didn't mention caliber of the SMK's you're going to use. I've killed a lot of hogs here in CenTex with FMJ's that passed right through their heads and punched their lights out, right now. If you're going to be shooting them behind the ear with at least a .243 caliber rifle, your SMK's will work just fine. And you're right: bullet placement is critical, so your most accurate load will serve you best!