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  1. #1
    Junior Member blueacehunter is on a distinguished road
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    Default Pros and cons for 9MM and 40 S&W for personal defense?

    I was wonder what the pros and cons to 9mm and 40 s&w rounds for personal defense. Any Help would be great.

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    They are both good defense calibers. The 9 is a little more controlable and cheaper to shoot. The 40 has a bit more punch but less mag capacity. Both of them will get the job done with a good hollowpoint. The 9 is chambered in some very compact guns too.

    Either one is fine. It all comes down to personal preference. I like the 9 better.
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    Well the 9mm is a great home defense round, and is more controllable and cheaper. Than a .40S&W, Anyways the .40 cal is just a 9mm thats a bit larger. So your basically shooting a 9mm, At a little higher velocity. So i would go with the 9mm. For Sure

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    Personally, I'm not a fan of 9mm. I had a Glock 26 and traded it in, now I have the G27...same gun, just .40 vs 9mm. At the range I've seen the same metal plink targets fall to the .40 but not even move when the 9mm was thrown at them. I would rather have more power than more bullets.
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    I carry the Spring Field XD Sub Compact .40; it holds 9+1 in its standard mag and 12+1 with its high cap mag. The real question is how concealed do you want your gun? The 9mm comes in some very compact sizes which can be hidden out of sight real easily. I carry mine in a shoulder harness when wearing a jacket which hides it 99.9% of the time. When not wearing a jacket i wear mine on a belt harness. When doing that it can be exposed when moving around or if the shirt is'nt loose enough. I prefer to have the extra punch of the .40 which is still affordable to shoot. Just dont ever carry your gun in a bag/something not attached to you, in a situation where someone wants to steal your bag or accesory now they would have your loaded weapon.

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    Super Awesome Moderator 220combat will become famous soon enough 220combat's Avatar
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    Quote Originally Posted by Username View Post
    Well the 9mm is a great home defense round, and is more controllable and cheaper. Than a .40S&W, Anyways the .40 cal is just a 9mm thats a bit larger. So your basically shooting a 9mm, At a little higher velocity. So i would go with the 9mm. For Sure
    Those are ignorant statements. Do your homework.

    The 9mm in MOST factory loadigs of equal weight show the 9mm winning in the velocity column. The larger diameter of the 40 S&W .400" VS .355" allows for a larger meplat, causing greater cavitation and hydrostatic shock. This allows the 40 S&W to develop close to 50% greater energy in certain loadings.

    Magazine capacity is usually reduced by 2-3 rounds when a full sized identical frame sized gun is compared in 9MM to 40.

    The 40 is not "basically a 9", it is a different round, designed to achieve different ballistic charistics. Blueacehunter, check a variety of ballistics charts, and see which caliber would better suit your preferances.
    Last edited by 220combat; 02-21-2011 at 03:57 AM.
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    Super Moderator Alan R McDaniel Jr is a jewel Alan R McDaniel Jr is a jewel Alan R McDaniel Jr is a jewel
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    I don't have either one. I like a 357 mag and have carried a 38 spl when I thought it necessary. Lately though I have been contemplating getting a small semi auto for concealed carry. There is only one real reason the pistol would ever be used in a practical sense. Most of the time it would just be an extra bit of weight to tote around. At personal defense ranges a 9mm will make the same kind of holes as anything else.

    Therefore, my choice in rounds will most likely be a 9mm because the ammo is plentiful and inexpensive comparatively speaking. Just the two cents of someone with no practical experience. I did have a little 32 auto and a 25 auto some years ago. I didn't particularly like to shoot them because they were too small for my hand.

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    While I don't carry my PP gun for shooting steel targets, that doesn't matter to me. I carry both 9mm and 40 S&W, depends on my mood in the morning when I get up. Plinking ammo is cheaper for the 9mm so it doesn't cost as much to practice, but when it comes to the PP ammo, the difference in price is not that much, but 9mm is more expensive, especially right now when Natchez has .40 on sale. I will carry either one an not be concerned about it. Both will do the job without a problem as long as I do mine, and I'm quite confident my end is covered.
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    Junior Member blueacehunter is on a distinguished road
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    Quote Originally Posted by 220combat View Post
    Those are ignorant statements. Do your homework.

    The 9mm in MOST factory loadigs of equal weight show the 9mm winning in the velocity column. The larger diameter of the 40 S&W .400" VS .355" allows for a larger meplat, causing greater cavitation and hydrostatic shock. This allows the 40 S&W to develop close to 50% greater energy in certain loadings.

    Magazine capacity is usually reduced by 2-3 rounds when a full sized identical frame sized gun is compared in 9MM to 40.

    The 40 is not "basically a 9", it is a different round, designed to achieve different ballistic charistics. Blueacehunter, check a variety of ballistics charts, and see which caliber would better suit your preferances.
    Where would I be able to find ballistic charistics chart?

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    Google - Ballistic charts
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