fireguy86: Sir; to tough of a question

get both

In reality I carry either the G17 or the G22 same everything except the caliber. Am able to change and not have a sight problem.
The .40 is more expensive to shoot, but you will enjoy the banging.
I do alot of reading: most say the .40 want come back [sight picture] as quickly as 9mm-.45's. In my mind I'm as quick with one as the other. We ?compete? speed shooting; can't tell a difference

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