Self defense ammo for glock 42

After researching it, I decided to load my 42 with Underwood Xtreme Defender (standard pressure).

 

Consider speaking with Underwood (if you haven't already). With the 380 there may be an advantage to +P Defender or moving to the Penetrator. For my 43. I chose +P Defender because Penetrator was too much penetration for my intended use but still went +P because I wanted more speed from the shorter barrel and it didn't sacrifice performance. Still stayed short of 18".

I was also considering the 42 and for that I was going to go XP because it didn't over penetrate beyond my comfort zone but did compensate for shorter barrel and a typically underperforming ammo.

 

http://shootingthebull.net/blog/final-results-of-the-380-acp-ammo-quest/

 

I use Underwood Xtreme Defender in my LCP II. If the little Ruger could handle +P, I'd go that route. Underwood is some good stuff.

 

I use Hornady Critical Defense 380 90 gr FTX.

 

That's what I carry in my lcp 2. My back up mag has Hornady 90gr XTP's in it.

 

Me too.