So I got a glock 23, and I'm getting some different carry rounds to test out and get a feel for. I reviewed the FBI's test results for some rounds, if anyones actually interested Ill try to relocate the article. But my considerations after the review came to these after considering overall velocity, penetration and expansion(the obvious ones). -Federal Premium Tactical 180gr HST/JHP -Barnes 140gr TAC-XPD HP -Winchester Supreme Elite 165gr Bonded PDX -Federal Premium LE 165gr HST/JHP -Winchester Ranger Talon 180gr HP These rounds averaged 12-19 inches penetration (Through double denim I believe then ballistics gel), .68" through .74" expansion, and 983 through 1118 for velocity. Im curious to see anyones experience with these rounds, brands, or their own preference and why.