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SigM4 wrote:At the risk of rehashing what almost everyone else has said, the 9mm enjoys the added capacity and somewhat softer recoil impulse. Couple that with bullet innovation and it puts the 9mm on a much more level playing field. That said don't think for a second that the .40 S&W round hasn't benefited from those same bullet developments.

Recreational shooters have figured out though that you can save $50 a case when you buy 9mm ammo vs. .40. To most of us here that's not a deal breaker, but for the casual shooter it represents a good chunk of their yearly ammo budget. As a result we've seen a lot of folks dumping the .40s they bought back during the last 5-10 years; which was accelerated even more during the last panic, when late to the game buyers were deciding between remaining in-stock pistols in a flavor of .40 S&W, .357 Sig, or .38 Super. Things are good once again and the panic purchases in a caliber other than 9mm or .45 just don't make logistical sense to some. Thus the flood of reasonably (dare I say it cheap) priced .40s.

As for me, I carry a 9mm daily, however when it comes to HD duty, a P30 in .40 is what sits on the bedside table. Unlike EDC where round count is a consideration, it's pretty easy for me to put a spare mag out to grab is something goes bump in the night to negate this at home. At the same time I like the balance of power and familiarity that this gun has with my EDC (a P30sk in 9mm). Does the .40 provide that much more over a 9mm? Probably not, but bigger is better right?

My other reason for owning a .40 is much the same for owning several 9mms, a couple .45s, and a cheap (price-wise, not quality) Sig Pro in .357 Sig; if/when the next great ammo scare/run happens, I should be able to find something to shoot through one of these. Might not be my first choice, but I like having options.

Hmmm, maybe I should pick up that P220 in .38 Super I saw...