10 MM or S&W .40

bustem19

New member
I do reload my own ammo so that's not an issue because I know that 10 MM can be hard to find. I heard you can reload the 10 MM really hot too. The S&W .40 is what all law enforcement carry so something has got to be good there. I was just looking for some opinion.
 
I am a big fan of the 10mm. Like you said you can load to whatever you like. I load 180gr Hornady XTP to about 1250fps. I could go hotter but I don't want to batter my Delta Elite. The S&W 610 I have will take much hotter loads, I can push the 180gr to over 1300fps if I want. But I stick with the same load just for ease of reloading. I have been using Blue Dot but just started using Power Pistol.

Quite a few people use the 10mm as a woods gun and others will use it to hunt with.

I don't think you can go wrong with the 10mm. I use it as a daily carry gun.

bob
 
You'll have to let me know if you like the Power Pistol over the Blue Dot. From what I've seen the Blue Dot is an excellent powder. Thanks for that info. I'm pretty well set on the 10 MM, but wanted to hear some arguments for the .40. I think you just help fuel the fire.
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Here is another argument, you can make a 10mm shoot like a 40 S&W but you sure can't make a 40S&W shoot like a 10mm.
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bob
 
I've been loading for the 10mm since spring 1988 the best source for anything 10mm is located in the 10mm Reloading & The 10 Ring forums on Glock Talk..

It is a very simple barrel/recoil spring conversion to shoot 40's in a 10mm I have aftermarket 40 S&W barrels for both my Glock 20 & Glock 29 10mm's...
 
I am a huge fan on the 40sw myself. It shoots very accuratly for me with my reloads.

What are you wanting to use it for? If you need the 10mm that it is worth looking at, if you don't need that much, that I would strongly recomend the 40 from my experience.
 
You can have both!

I just recently discovered the joys of the .40 short & weak when I got a Lone Wolf caliber conversion barrel for my Glock 20 10mm.

Now if I'm plinking or after small game I'll use the .40 as the ammo is considerably cheaper than 10mm, but if I think I might get a shot at a pig or deer the 10mm barrel will get the call.

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Most people find .40 quite snappy, I do think it's a little snappy, 10mm is worse..
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I'm soon to be ordering a 9mm barrel for my glock 22
 
Originally Posted By: bustem19I do reload my own ammo so that's not an issue because I know that 10 MM can be hard to find. I heard you can reload the 10 MM really hot too. The S&W .40 is what all law enforcement carry so something has got to be good there. I was just looking for some opinion.

Depends on what you want to use it for. I'm a .45 ACP fan myself but it's an ongoing affair from my RSVN service days.

The way the .40 S&W came to be was a result of FBI testing of calibers and stopping power following some shoot outs where the FBI came in second. The FBI tests showed the best stopper tested was the 10mm mag. But, they put a committee to work on the project and they concluded that the 10mm was too much gun for many of the FBI agents. Soooo... Long story short S&W filled the "need" with the .40 S&W. I'm not knocking the .40 S%W mind you. My experience with it is near nil. I have a number of cop friends who carry them and they love em. Worth noting that none of them have ever shot anything but paper with them.

IMO, if it's a "stopper" that you want, go with the 10. If it's a more mild and apparently perfectly suitable caliber, go with the .40.

For myself, if I was going to put aside my .45, I'd be picking up the 10. Heck, if it was good enough for Sonny Crockett, it's good enough for me!
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Nothing to do with the topic, but bustem your avatar makes me laugh. I had 2 40's and they were just too snappy. I didn't like shooting them. One was a kimber and the other a sig 229. I would love a s&w 610. But I like wheel guns alot.
 
Thanks about the avatar. I thought it was funny myself...hints the choice.

Anyways I have read some history on the 10MM and I can't believe the FBI isn't using this caliber. I also watched a video on Youtube and this guy was reloading a 230 gr bullet. Now that's a bear stopper there.

How about some more pictures of the 10MM's.
 
I don't have to be asked twice to show off mine.

A S&W 610-2 that came with an unfluted cylinder and a 3 inch barrel. It now has a 4" barrel and the flutes are more Colt like (longer) than S&W. I also am very partial to square butt Smiths so it wears a pair of RB to SB conversion grips. It was built for IDPA and it shoots like a dream. Very managable in DA, more so in SA.

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This one is my 99% of the time carry gun. An early (round top) pre-enhanced Colt Delta Elite that has had a lot of work done on it by Ted Yost. The heart of this one is a Schuemann AET barrel (40 cal reamed to 10mm). It shoots 180g Hornady XTPs like a laser.

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bob
 
Quote:I do reload my own ammo so that's not an issue because I know that 10 MM can be hard to find. I heard you can reload the 10 MM really hot too. The S&W .40 is what all law enforcement carry so something has got to be good there. I was just looking for some opinion.I think it depends on the type of shooting that you anticipate doing the most..

For most Urban Self Defense purposes, the .40 is very adequate.. It's certainly ahead of the 9mm and .38 spl that most LE agencies carry when it comes to the more critical shooting situations

For Hunting and competition shooting where a Power Factor is involved, the 10mm is a more desirable choice, or if it is a situation where you are likely to be defending yourself in a more open environment..

I've been a big fan of the 10mm for years and at one time owned five of them, and still do have three..

Early Thompson Auto Ordnance
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Kimber Target model
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Para Ordnance conversion from .40-10mm (16rd capacity)
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Since I also reload, the cost factor over other calibers is negligible...I would, however, suggest buying a bunch (1,000+ rounds) of Starline brass soon, if you are seriously contemplating getting into the caliber...I'm still using a lot of the Hornady and other brand brass that I've accumulated over the years, (I have a friend that used to manage an indoor shooting range and he would save me the once fired brass) but have 1,000 rounds in storage that I bought at $101 and now is going for $136+ (Starline) and $176 (Sinclair/Brownells)....

I developed a love for the caliber after attending the Chapman Shooting Academy many years ago as a Police Firearms Instructor and many of the attendees were shooting .45acp pistols and training on moving targets that were moving at 10 feet per second and finding out the lead that was required with the .45 at the various distances..There is a big difference between the lead distance between a .45acp at 850-900 fps and a 10mm at 1200-1350fps...when fired at a moving target from 25, 35, and 45 yards..

For competition shooting where a power factor is involved, the 10mm can be loaded to stay up with, or exceed the .45acp as well, with FMJ rounds...

It's very true that the 10mm was the original caliber choice for FBI Agents, until it was determined that many could not handle the 10mm...simply due to the fact that even the agents were not, as a group sufficient shooters by nature, capable of more than basic general qualification standards...Very few are 'competition' grade shooters..(or pistol shooting nuts
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).. The recoil is relative to the .40 as the .357 magnum is to the .38 special... And rather that upping the requirements for training and results, the FBI chose to look to an easier round as a substitution..
 
Old turtle, I must say I love reading all of your posts. You are very knowledgeable when it comes to this sort of thing.

That's a very nice 6 shooter Bob! I'm hoping to get a 10 MM for my birthday. I will try to find that brass as soon as I can.

Let's see some more pics! I know the people on this website have them.
 
Originally Posted By: justin10mmFYI the 10mm Magnum is a completely different cartridge than the 10mm Auto.
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How would you describe the difference?
 

Quote:How would you describe the difference? Here you go, from an article Here Found on a Google Search
Quote:As an interesting side note, for a brief period of time a 10mm Magnum cartridge was available and one factory gun was produced to shoot this very powerful cartridge. There is a significant difference in case length between the 10mm and 10mmMAG. IAI produced a 10mm Magnum handgun called the IAI Mark IV 10mm Magnum (pic). The barrel is long and has a "bulb" where the bushing is located. The locking lug is a kidney shaped design that is fully enclosed. The 10mmMAG had ballistics on par (or maybe even a little better) with the .41 Magnum. The advantage that the 10mm Magnum had over the .41Magnum was that it was able to fire from a semi-auto design. A very limited number of the IAI/AMT guns were manufactured (less than 100?) and all coming with a couple of boxes of custom ammunition using STARLINE BRASS loaded by (I think) SIERRA. Over the years, I have heard various "one of's" being produced to fire the 10mm Magnum, but no manufactures have chambered this cartridge. About the only ammunition specifications I have is this small blurb, "From a custom 10mmMAG cylinder, the 610 shot 1 1/2" @25 yards The IAI was 3 1/2". The ammo was American Ammo 220 gr, 1335 fps, 792 ft-lbs. Powerful!"
 


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