Pappy,
If I am not mistaken, the G-20 has a 15 round magazine???

Aught to take care of most any problem in your neck of the woods.

The 3 inch Charter snubby in 38 spl pretty much is up to task for anything that may crop up here.

The chest rig,is it a Diamond -D?? I have one for my Ruger Alaskan.

Wayne