I use a CSM dump pouch to carry spare shells at matches. Side Saddle on the gun, and I forgot the brand but, I have a leather butt cuff for shells that is of good quality. Don't always use the butt cuff as I find it slower to load from than the pouch or side saddle. Not applicable to a pump but I like the 3 Gun Gear SlideLock 2 Pack on my automatics, works very well when I'm duck hunting.
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