The vast majority of my .40 S&W ammunition has 180gr projectiles. I currently have 180gr Ranger Bonded, in my G27.3. As long as the bullet is from my top tier ammunition choices, I will gladly carry the 180gr or 165gr, in any of my .40 S&W GLOCKs. When I was in LE, we were assigned 180gr Bonded Golden Sabers. More @Wikipedia
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