Why use the mag pouch? Because I have six of them :)
Since reloads can be staged, that would certainly make sense, but remembering to always stage that one shell at the shotgun shooting location might be stretching the old brain cells, especially if I practically never need that shell. Haven't needed one yet, but then I haven't shot a huge number of WB matches. My two '97's (Chinese and Winchester) both have weak ejection when shooting CAS but so far have ejected okay when stoked.
Thanks for the reply.