I think the key is balance.
You need a reasonable amount of capacity to have a chance of making enough hits before you run dry. But having lots of ammo/capacity is only worthwhile if you have the time to shoot it all. You also need a good hit rate probability. But, again, even a tremendous hit rate probability won't help if you don't have the rounds you need to make the all the hits.
It's all in finding a happy medium. We shouldn't rely exclusively on capacity--we may not have the time or the skill to make use of those extra rounds. We shouldn't rely exclusively on our belief that our hit rate probability will be high in a gunfight. For one thing, it might not be that high, and even if it is, we still need need enough rounds available in order to be effective.
As Jeff Cooper has said: "Diligentia, Vis, Celeritas" which means Accuracy, Power, and Speed. He came up with this to define the essential elements of combat shooting.
Here we revisit his philosophy coming at it from a different perspective. Cooper stressed in his lectures that you choose the power (his preferred choice was the .45 ACP) then if the situation arises you balance speed and accuracy.
Part of the power calculations must include the cartridge and the number of rounds which you carry.
JohnKSa, thank you for posting your original post. It is food for thought
NRA Life Member - Orange Gunsite Member - NRA Certified Pistol Instructor
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