.38 super, using a 6" barrel, and cut down 223 cases. How much do you THINK 1 more inch of barrel produces, hmm? LESS than you gain by using a fully supported barrel, cases with MORE powder capacity, that';s what. 90 grs, 2000 fps recoils no worse than do 185 gr plus P .45 ACP jhps, but have 800 ft lbs. Why don't 30 carbine sp's "blow up" at 1900-2000 fps, dummies? all you have to do is use an appropriate softpoint, like one made for a 380., and you wont have to worry about 'bullet blowup".