Does anyone shoot 45 in 3 gun? I have never shot a 3 gun match and I have a HK45 that i would like to try. I also have other 9mm. Seems the 9mm may be the way to go but just wanted to hear from you guys. Advantages or disadvantages to the 45, specifically the HK45? I know heavy metal but i am thinking of tac irons with 5.56? thanks