There is many advantages to sticking to one round for your handgun needs. Instead of having to hunt for deals on three or four calibers, and stocking both practice and carry ammo for each can get to be a little wonky on both your budget and your gun cabinet shelf, a single caliber choice can streamline your life. The good thing about Glock is that they offer several platforms in the same calibers so that you can stick with the round you love no matter what you are carrying.
(From the top, the Glock 17, 19, and 26)
While there are several combinations out there for Glock lovers, such as .40S&W fans (the Glock 22, 23 and 27), .45ACP lovers (the Glock 21, 30, 36), I personally am more often than not a 9milly guy when it comes to Glocks (don’t laugh we are sensitive) for my own reasons and to illustrate this article have chosen the platforms that use that caliber. However, with that in mind, you can substitute almost everything written here for the caliber of your particular choice.
Read the rest in my column at Glock Forum