For all my semi handguns I have 6 mags for each one. I think it came from my road days. I ALWAYS carried a double mag pouch and one in the gun made three. With six I could swap them out every once in a while.

Now with the Storm, two of the 6 mag carriers would give me more than enough. Two 5 rounders would be fine, but for just a buck or two more why not get the six packs! I actually think that the 8 mag pouches would be to wide. And who knows, when I start putting the carrier system together I may just decide that two 3 mag pouches would be enough. But hey, EVERYBODY wishes they had more ammo!