A 357 magnum is capable enough in my book I loaded up some 158 grain fmj's and shooting at a piece of 3/8 inch thick iron plate from about 50 yards they were going clean through I also shot a couple of the montana gold 125 grain JHP's and they were just about going through cupping the impact side and cracking the backside enough that some of the jacket and lead was actually going through. With those results I guarentee they would have absolutely no problem going through a 2x4 or maybe 2 or 3 LOL