10mm opinions??

[Dragonfly]

DO IT!

Yes, do it!

 

[Blue Jays]

"…DO IT!…"

"…Yes, do it!…"

Seems like a good load that will be around for many years to come.
A nice complement to my .22, .357 Magnum, .40 S&W, plus long arms.

 

[Mark_Mark]

Seems like a good load that will be around for many years to come.
A nice complement to my .22, .357 Magnum, .40 S&W, plus long arms.

I love .40 but 10 is insane!

 

[Blue Jays]

OK, OK, OK…y'all have convinced me to make a 10mm the next one to be purchased!

 

[Dragonfly]

OK, OK, OK…y'all have convinced me to make a 10mm the next one to be purchased!

Nice!

 

[Mark_Mark]

Seems like a good load that will be around for many years to come.
A nice complement to my .22, .357 Magnum, .40 S&W, plus long arms.

10mm is the missing link between .357 and .44 mag. And in a Auto

 

[JohnKSa]

10mm is pretty much the same as .357Mag.

You can load .357Mag a little faster for a little bit more energy if you want to go to very light bullets.
You can load 10mm a little heavier for a bit more momentum if you want to go to very heavy bullets.

But for the most part they just overlap.

 

[GatorHunter]

Once it starts it never ends. I’m always looking for my next 10mm

 

[Hesa Hard1]

10mm is pretty much the same as .357Mag.

You can load .357Mag a little faster for a little bit more energy if you want to go to very light bullets.
You can load 10mm a little heavier for a bit more momentum if you want to go to very heavy bullets.
But for the most part they just overlap.

Noop.

The 10mm AUTO and .357 Mag “overlap” only if (1) you ignore platforms and (2) you fail to factor for comparative barrel-lengths.

Platform-wise, the .357 in a 5”-6” N-frame wheelgun is a low capacity boat-anchor. Admittedly it’s slightly less weighty when housed in a L- or K-frame. The 10mm hi-cap polymer guns win this issue hands-down.

Ballistically, if you consider e.g., a 6.2” 10mm Glock 40 compared to any 6” .357 revolver, the 10mm will push the heavier 200grn and 220grn bullets faster. The .357 looks competitive with the lighter .355 bullets, but typically tops out at 180grns.

 

[Mark_Mark]

Noop.

The 10mm AUTO and .357 Mag “overlap” only if (1) you ignore platforms and (2) you fail to factor for comparative barrel-lengths.

Platform-wise, the .357 in a 5”-6” N-frame wheelgun is a low capacity boat-anchor. Admittedly it’s slightly less weighty when housed in a L- or K-frame. The 10mm hi-cap polymer guns win this issue hands-down.

Ballistically, if you consider e.g., a 6.2” 10mm Glock 40 compared to any 6” .357 revolver, the 10mm will push the heavier 200grn and 220grn bullets faster. The .357 looks competitive with the lighter .355 bullets, but typically tops out at 180grns.

I like 10 because it hits hard, and I can carry 14 in my EAA, plus another 14 in the other pocket. My SAA 10mm Clone only holds 5 safely

 

[brutus51]

10mm is pretty much the same as .357Mag.
But for the most part they just overlap.

Not true, I don't have to chase brass all over the place with my .357.

 

[JohnKSa]

Ballistically, if you consider e.g., a 6.2” 10mm Glock 40 compared to any 6” .357 revolver, the 10mm will push the heavier 200grn and 220grn bullets faster. The .357 looks competitive with the lighter .355 bullets, but typically tops out at 180grns.

I was comparing a 4.5" autopistol to a 4" revolver which is still not quite an apples to apples comparison, but pretty close.

And yes, that's exactly what I said--the 10mm will have a slight momentum edge with heavier bullets--it will push them faster. The .357Mag will have a slight energy edge on the light bullet end of the spectrum. But the differences overall are small--mostly the two cartridges overlap in performance.

I do agree that there's a significant difference when you start looking at the common platforms for each caliber. I find that a 10mm autopistol is easier to carry and to shoot then a generally comparable .357Mag revolver--and then there's the capacity difference. That said, you can shoot 10mm from revolvers and .357Mag from autopistols, so pretending that this can be boiled down to a simple autopistol vs. revolver discussion doesn't quite work.

 

[DR505]

10mm is the missing link between .357 and .44 mag. And in a Auto

Someone forgot the .41 magnum. The 10mm is far more similar to the .357 than a middle ground to the .44 magnum. The .41 magnum takes that position and outperforms the 10mm by a good margin.

 

[Hesa Hard1]

That said, you can shoot 10mm from revolvers and .357Mag from autopistols, so pretending that this can be boiled down to a simple autopistol vs. revolver discussion doesn't quite work.

Well, on the platforms, if you really wanted a true apples-to-apples “shoot-off,” you could do chronograph testing and penetration testing in ballistic gel using a 4”or 6” 10mm 610 revolver versus a .357 Mag revolver having the same barrel length, and then see if there’s a result clearly favoring one cartridge over the other. On the autoloading platform, you could similarly pit a 6” .357 Coonan pistol against any 6” 10mm 1911 (long-slide) and see what results. (This assumes the tester would be using the best full-throttle ammo in each caliber and NOT cherry-picking in order to favor one over the other).

Don’t know if anyone’s done this sort of testing yet or not, but it would remove the issue of the “platform” as a variable in the .357 v. 10mm arguments.

And caliber/ cartridge arguments which involve a revolver in one chambering versus a semi-auto in a different chambering (especially where different barrel-lengths are involved) quickly devolve into Stoopidville.

 

[Hesa Hard1]

Someone forgot the .41 magnum. The 10mm is far more similar to the .357 than a middle ground to the .44 magnum. The .41 magnum takes that position and outperforms the 10mm by a good margin.

In max loadings, the 10mm just treads into low-end .41 Mag territory, but not by a whole lot.

The “10mm”-related cartridge that bests the .41 Mag is the 10mm Magnum, per John Taffin’s testing back in the day.

More here: http://www.sixguns.com/tests/tt10mag.htm

The 10mm Magnum has definite applications as a hunting pistol and a long range silhouette pistol. Shooting informally at long ranges of 100- to 200-meters and using rocks as targets convinced me of this. Anything the .41 Magnum can do, the 10mm Magnum can also do and perhaps do it even a little faster and a little better. That is a tough confession for an old sixgun man to make.
John Taffin

 

[Sour Kraut]

There are other loads available, but here are 2 that compare 10mm to 357 with similar muzzle energy in heavier loadings:

 

[Mark_Mark]

Someone forgot the .41 magnum. The 10mm is far more similar to the .357 than a middle ground to the .44 magnum. The .41 magnum takes that position and outperforms the 10mm by a good margin.

you haven’t seen my 10mm MegaDeath loads!

 

[d'zaster]

10mm mag looks like quite a boomer. Wow!

To me the Glock makes the most sense....
Proven platform and highest capacity
Flexible...You have the option to get get conversion bbls in 40 and .357 Sig (the sig bbl might be hard to find as I understand).
Easily upgraded....There are many aftermarket triggers/parts to adjust/tune the gun to your liking.

But if 1911 format is preferred (grip angle, trigger feel etc), you might consider Kimber. I have and Eclipse custom II and it is a great shooter w numerous features found on higher end 1911s.

I have a P220 in 45ACP. I could see the benefit of the Sig in 10mm which would be grip feel and SA/DA function which Glock and 1911 do not offer.

Once you're hooked on the 10mm, you'll eventually want to add a revolver - just sayin.

 

[bigmike45]

If the 10mm, that I have today had been around, I probably would have never become such a fan of the .45acp. I have 4 of them and shoot and carry them on a regular basis. I really like the 10mm handguns.
Springfield Armory Range Officer Elite Operator......my nightstand gun.


Smith & Wesson 1066


Colt Delta Elite Gold Cup


Springfield Armory XDM 4.5

 

[WrongHanded]

To me the Glock makes the most sense....
Proven platform and highest capacity
Flexible...You have the option to get get conversion bbls in 40 and .357 Sig (the sig bbl might be hard to find as I understand).

I'm a .357 Sig fan, but I'm skeptical about converting a G20 to the cartridge. .40S&W is slightly shorter than 10mm, but is otherwise dimensionally identical, and so should feed okay from the same magazine (and apparently it does, according to those who've done it). But .357 Sig is not only shorter, it's also a bottle necked cartridge. And that seems like it could well produce feeding issues, or cartridges pivoting in the magazine under recoil, and getting jammed up. Of course, I could be wrong about that.

 

[d'zaster]

I'm a .357 Sig fan, but I'm skeptical about converting a G20 to the cartridge. .40S&W is slightly shorter than 10mm, but is otherwise dimensionally identical, and so should feed okay from the same magazine (and apparently it does, according to those who've done it). But .357 Sig is not only shorter, it's also a bottle necked cartridge. And that seems like it could well produce feeding issues, or cartridges pivoting in the magazine under recoil, and getting jammed up. Of course, I could be wrong about that.

Indeed, I was a bit suspicious of how the 357 Sig conversion would perform but have had zero problems with ~350 rounds fired (factory and handloads in 10rnd mags). The 357 Sig conversion bbl is from Lonewolf. I decided to give it a try after purchasing a huge pile of factory 357 Sig ammo from an estate sale.

 

[WrongHanded]

Indeed, I was a bit suspicious of how the 357 Sig conversion would perform but have had zero problems with ~350 rounds fired (factory and handloads in 10rnd mags). The 357 Sig conversion bbl is from Lonewolf. I decided to give it a try after purchasing a huge pile of factory 357 Sig ammo from an estate sale.

That's good to know!

 

[Mark_Mark]

If the 10mm, that I have today had been around, I probably would have never become such a fan of the .45acp. I have 4 of them and shoot and carry them on a regular basis. I really like the 10mm handguns.
Springfield Armory Range Officer Elite Operator......my nightstand gun.
View attachment 1060347

Smith & Wesson 1066
View attachment 1060348

Colt Delta Elite Gold Cup
View attachment 1060349

Springfield Armory XDM 4.5
View attachment 1060350

those Delta Elite have gone crazy in price

 

[Lennyjoe]

Look guys and gals, we can argue all day long on the 10MM but it really fills the nich in a high power auto loader so let end the 10 MM vs .357/.41 argument.

 

[JohnKSa]

Don’t know if anyone’s done this sort of testing yet or not, but it would remove the issue of the “platform” as a variable in the .357 v. 10mm arguments.

At one time I did a complete survey of every commercial loading of 10mm, .357Mag, .40S&W and .41Mag on the web that listed velocity specs. That was awhile back--now it would take forever, but back then there weren't nearly as many ammo companies listing specs online. Anyway, that's how I came to the conclusion that there wasn't really enough difference between the 10mm and the .357Mag to make a hill of beans. Also that the .40S&W was a considerable step down from either the 10mm or the .357Mag.

And finally, that the .41 Mag, a few very light loads notwithstanding, was in a completely different class than any of them.

In max loadings, the 10mm just treads into low-end .41 Mag territory, but not by a whole lot.

Correct. And the only reason that it does is that there are a few very light .41Mag loadings out there. The .41Mag is a far more capable cartridge than the 10mm.