If old yogi is pissed off and intent on making you suffer, then you better have all the calibre, grains, penetration, placement, and LUCK you can have on your side. I guess with todays jacketing technology they have made some good improvements to the hollow point rounds for penetration and controlled expansion. I am just in the "If it aint broke don't fix it" club and have always used a good mass + penetration round to cover my rear.