I own a Glock 21 and have since I turned 21 ( i'm 24 now). I recently saw a deal for a 10mm conversion barrel for it so I went ahead and picked it up. it is a very nice stainless steal Lone WOlf barrel. I also bought a glock 20 mag and a box of 10mm. AFter paying the $30 for the box of 50 and bringing it out to the range, I was not impressed. What differences should I notice from the standard 45 round I normally shoot? Wanna kill these ads? We can help!