I'm running an STI barrel similar to this.
http://1911store.com/browseproducts/STI-Trubor-Barrel-Comp---With-T2-Comp.html
i've tested 3n37, true blue, hs-6, longshot, and autocomp.
i think the key here is crimping. and maybe because i lube my cases prior to loading...just maybe...plus my bullet does not have the bottle shape. it just looks like a regular 9mm bullet...
i have yet to try small pistol primers on this... i use small rifle and small rifle magnum primers...
i am using a 9mm major Matt McLearn open gun...i load the same way for my montana gold bullets... almost close to same FPS with berrys...