I couldn't answer your poll because a .40 S&W and a 10mm are the same caliber.
However, if you meant which chambering do I like better, I guess I'll take the 10mm, since it is a somewhat unique chambering. It has power approaching the .41 magnum, but in a semi-auto platform. Something about a 16 shot .41 magnum makes me feel all warm inside.
The .40 S&W, on the other hand, is less useful to me than the .45 ACP which has been around for a hundred years, has a pleasant recoil, and outperforms the high pressure .40's, with less wear and tear on the gun and the shooter.
Last edited by denner; 04-15-2012 at 05:32 PM.
I voted for 10mm. The 10mm is one seriously awesome round! It does cost more to shoot unless you are a handloader, but the capabilities are much greater than the .40
A lot of this depends on what you want it for ? I would be very nervous about shoot a 10mm. in my home if I have a family.
Where is that round going to stop after it goes through the BG because it's not going to stop in the bad guy.
A 40 , frag hollow point ,ok , I feel a little better.
The more important concern to me is actually being able to hit the target, under extreme stress, and having the discipline not to shoot in a direction where there are innocents in the background, with whatever round you intend to fire. That is a very tall order, by itself, if your life is being threatened.
If you look at ballistics charts, with all kinds(manufacturers) of ammo, between the .40 and the 10mm.....using 180 gr. and 200 gr. respectfully..the only major difference is ft. lbs. of force, and cost.
Like I said...........
.40 on steroids = 10mm
10mm is my preferred carry round.
A .40 is to a 10mm,what a .38 special is to a .357 Magnum.
Price and availability of the 10mm is my only concern. As far as over penetration, for what is worth, for defense purposes I use hollow point ammo.
I'm new to all of this. Having said that, it seems to me that .40 cal is slightly bigger, and I'm wondering why everyone says 10 mm is bigger? Doing the math: 1 cal = 1 inch. There are 25.4 mm in one inch.
.4 Cal x (25.4 mm / Cal) = 10.16 mm. So, 40 Cal is .16 mm bigger than 10 mm, right? What am I missing?
I found the answer to my own question (after posting the above) on another web site. The short answer is that 10 mm ammo is slightly longer, uses a larger pistol primer, has a higher SAAMI maximum pressure, and comes in heavier weights. So, generally speaking, the average 10mm bullet generally uses more propellant and has more mass.
To lay it out completely
10mm uses large pistol primers
40S&W uses small pistol primers
10mm has a SAAMI maximum pressure of 37,500psi
40S&W has a SAAMI maximum pressure of 35,000psi
Both fire a 0.400inch diameter bullets (0.401inch cast bullets)
10mm has a typical bullet weight range of 135gr to 220gr
40S&W has a typical bullet weight range of 135gr to 180gr
Case dimension are very similar with the 10mm being 0.142 inches longe
I have a smithand wesson 1006, I love the 10mm. Ive experimented with everything from 135s to 220s. With power pistol you can get a 135 moving over 1700. I took a whitetail doe with it at about 35 yards. It was a large through and through wound.
FYI: 10mm equates to 0.393700787402 caliber..... Just as 9mm equates to 0.3543307086618 caliber........
What handgun and caliber is best suited all comes down to personal choice.... There is no handgun that is the best one for all to use........
I am a 45 acp fan myself but when I had a FFL, I carried and pushed the 10mm. When most guys asked me why I prefer the 10mm, I explained, for me; it is just a tough round to ignore. If confronted in cold weather and your assailant is wearing multiple layers, the 10 can handle this without issue. Warm/hot weather, a 9mm is fine and the 40 is better.
For a different comparison but one that will help explain my thinking. I know most will disagree with my thoughts above but I remember when we bought a Grand Cherokee with a 318 V-8 several years ago over a Dodge Durango with a 360 V-8. At the time, we had a 16 ft. pleasure boat we trailered 40 miles nearly every weekend. When we were offered a great deal on a 22 ft. we jumped at it. The Gran Cherokee struggled with this larger boat and at times I didn't know if I was driving or the 22 ft. boat behind me was. I then had to go get the Durango that I should have bought in the first place.
I had much rather have too much weapon than not enough.