This may be the most unnecessary question ever asked on this board, but I have Speer Gold Dot 124gr. +P 9mm, which I know is a popular and capable defensive round. The box and the website say "short barrel," which I assume means the bullets are optimized for short barrels. Unfortunately, neither box nor website say how short. Handloads.com says 4" or less. Can I use this round in my Glock 17 (4.5" barrel length), or should I go for something different? Edit: Okay, I see there is a regular barrel version as well, so I will get some of that. What to do with the short barrel ammo? Can I still use it?