For optimum performance?

.45acp is 5" whereas .40 is to blank?

Thanks,
Dave

Both the Federal and Winchester websites list a 4" barrel as the length for the ballistics published. That would appear to be the industry standard.

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Originally Posted by Blackhawk6

Both the Federal and Winchester websites list a 4" barrel as the length for the ballistics published. That would appear to be the industry standard.

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Thanks