Marty hits on a good point, one worth remembering. At the time, all this fancy high performance designer ammo wasn't readily available, and the Modern Technique was designed around controlling heavy-recoiling rounds as those were seen (rightly or wrongly) as much better for defensive purposes. I will still revert to MT for a LW .45 with GI ammo, or a K-frame with 125 .357s in it.