when you CAN have big and fast? 70 grs, 2400 fps, 900 ft lbs, 223 softpoint performance in a Lw Commander, with .45 ball type repeat hit speed, AP performance, and guaranteed breakup and penetration of  the prefrag's segments, and slugs that you can make for yourself. Just get a fully-supported barrel, .45 Super cases, and do the  R &D that I outlined below, using the epoxy-cored jacketed slugs first.