I've never seen a difference between spp and lpp loaded 45acp. I load both.....like you said the only pain is sorting it.I generally throw small primer .45acp brass in the trash but I had about 150 sorted from a few thousand large primer cases. What a pain in the ass. I thought I'd try loading some since small primers seem easier to find than large. I'll see if there's any difference in performance. I expect not.