went to an ipsc competition a while ago, and my glock had only about 400 hundred rounds through it. Speed wise, i was only a few seconds behind the grandmaster and his customized cz shadow. Grouping wise, i was more accurate (more A zone hits vs C zones)! But that is just ipsc symantecs. I used 4.2 grains of universal, cci SR primers, 124 grain tmj bullets, that produced 134 powerfactor. # of jams/fte/ftf: ZERO # of brass to the head: ZERO % of satisfaction: 100% !!!