357 Mag vs 10mm: Huge Difference? 

Moral of the story. Both are excellent rounds. Use whatever you prefer and (or) are comfortable using.

Homeboy needs to be in a barbershop quartet

Thanks for the video BB!!! Having read some of the comments and the various opinions poking holes in the testing, I would like to point out a few things. 1) Yes, the testing involves 2 different platforms. These are the platforms that are commonly available and the test is therefore sound. A) I'm sure there are folks with the resources or have been able to acquire matching platforms for these two calibers. Fantastic!!!! Unfortunately there are a larger number of folks without these advantages...me included. 2) This is for fun, which I greatly enjoyed!!! 3) Regardless, I'm still looking around for a revolver and lever action in the same caliber. Why? Why not? Having acquired the semi-auto's I'm after, IMO, the revolver is an elegant firearm with functionality and the same for the lever action carbine. Most importantly, I want at least one of each. I appreciate the time, thought and effort that you're putting into these videos. Subbed

357 is nice because you can load it and tuck it away in a cabinet for literally years and there’s no magazine spring or jamming issues to worry about.

Nice video thank you. Love them both. Id take the 10 over the 357 also.

In most if not all of your tests, it is the material amalgamation, overall engineering and weight, of the projectile that makes the most difference when combined with velocity.

Great video. In my line of work (Bigfoot Scientist), I need a sidearm that has a lot of stopping power and carrying capacity but is also relatively light and reliable. I used to carry a .357 revolver but have recently switched to a 10mm. Hoping the trade off in reliability doesn’t come back to bite me.

I'm really happy with my 10mm S&W M&P 2.0 4.6. It's my bear protection weapon. I like the follow up capability... If I ever get the chance.

I did NOT expect the 10mm to have that much more energy than the .357🤯🤯 ....gonna have to buy one of the Hi Point 10mm so i can dip my toes into the "best millimeter " pool

Ammunition makes all the difference, which he outlined what he was using at the beginning. And, used a Buffalo Bore or Underwood type ammunition

10mm no contest. Much better energy dump early on in the gel, did more damage to the 1/4" plate, far better handling, much higher ammo cap(as you mentioned), and much faster reloads. Probably lighter and more compact on top of it all.

Try the Desert Eagle 357 as a non-revolver option. Fast shooting with very little recoil. 9 shots. Likely picky with some ammo though, and lead not recommended due to the gas system.

the Colt 10mm Delta Elite advertisement said the 10mm has 30% more power than the .357 mag... both are impressive rounds.

I agree with gallantmouse898. It appears that they are both equal. I prefer .357. I had a 681 it was a hoot to shoot. Plus you can put .38 rounds in for a less expensive target practice round. The .357 has been around for a very long time and there's not much to tweak on it. The 10 mm, in comparison, is relatively new. A lot better than the 9 mm. But if I had my preference, I'd choose a Colt 1911 .45 ACP. That weapon was considered to come back into service over the 9 mm because of its knockdown power. I was issued & qualified both on the 1911 and the Berretta (sp?) and everyone of my fellow officers and NCOs preferred the 1911s. Just saying.

A comparison between 10mm and .41 Magnum might be more "apples to apples." The bullets are very close in diameter and weight, and depending on the loads, velocities are similar as well.

Anyone else wondering, why the individual ammo for each isn't discussed... I mean the first test are looking for penetration yet hollow points are bring used. You don't want excessive penetration with hollow points. Steel test should have been done with at least jacketed flat or round (bonded solid core even better).

“Wait… Was she a great big fat person?” “Don’t chu hurt my Dog!” “It rubs the lotion on its skin or else it gets the hose again….. That’s right Precious…. She will get the hose…….. 😚😚😚”

I knew they were pretty much deadass the same round! Just ones for revolvers and one is for semi autos. But none of my homies wanted to listen to me. Now I can show them this

The first thing I did with my Glock 40 was put a Holosun 501 on it... but the SECOND thing was a Timney trigger. It had a little creep in it at first but nothing a little polishing couldn't fix. Now it is smooth as butter.

I have a case of Fed American Eagle 158gr JSP that I bought years ago that leaves my 6" GP100 stainless at about 1400 fps even. I remember being impressed when I chrono'd it years ago. I agree, using H110 you should be able to get a lot more velocity from that 686, but you are at max load so ???. I have seen articles in the past where someone tested a few different makes of revolvers of the same barrel length and was very surprised by the difference in velocity with the same load.

I bought an M69 for my 44th birthday because 44, and because I was going to be where bears were. But as it turns out, I can shoot a Glock 20 a LOT more fast and accurate than that 44mag. (And same goes for 10mm vs 357mag.) So now I take the Glock to go camping. (As for bears...on that birthday trip, I only saw two bears, both cinnamon blacks, and they were more interested in wild berries than in me.)

Great tests and results as usual! Keep it up!! If possible, I'd like to see a 7.5FK vs 10mm

For an even test you should get a S&W 610 revolver they come in a 6 inch version. Nice thing is with moon clips you can shoot 10 mm and 40 S&W from the same gun.

H110 and Winchester 296 powders are exactly the same powder. It's been proven by different loaders and testers.

Love them both. Just recently got a 16" Mechtech upper for my Glock 20. Haven't popped it's cherry yet, though. Would be fun to see the difference of the 10mm and .357 out of carbines.

Wow 357 is a boss when it comes to ballistics gel.

The problem is the (watered-down) 357mag is NOT loaded to the original power ---- you really needed to use Buffalo Bore ammo to see👀 the truth ---- as far as I can remember ---- back in the 1970's the 357 was loaded to (158 grain screaming out of the muzzle at around 1500 Fps) NOT 1200+ ----- That'll make the difference.

You should try the Lyman #358156 W /Gas Check Hard Cast with #2 Alloy at about 165 Gr. Avg. and a Max Load of H110 /W296 it should penetrate the 1/8 inch steel.

You have METRIC right there, on that tape ! What is holding you back?.

According to police officer Kirkland,,, if you want penetration, the .357 will crack the engine block of a truck.

Your 40mos shoots better than mine. I get 2ft groups at 25 yards, 4ft groups at 50 and yes 8ft groups at 100. That’s shooting on a ledsled and using multiple different rounds and different shooters. I sent it back to Glock and they replaced some trigger parts and sent it back to me with their targets and 4 inch groups but at like 10 ft lol.

I see your 10mm and raise you .460 Rowland

Try the 10mm buffalo bore vs .357

357 penetrated further but lack of power punch compared to 10. When u face a 4legs meat eater, u want a 15 rounds single action with more power in each punch to deal with. Cheer 🎉

You know about protection you should get laminate on there so laminate use a hot iron to melt it on and it should stick to you metal protector and then you can feel more secure when shooting stuff

Nigel, fetch my Barrett.

aawh that jell was softer on the left side. good stuff.

Yeah big difference betweem the two. You can find quite a bit of 357 mag loaded to proper 357 magnum speeds. 10mm is a bit harder.

Wasn't the 357 designed to penetrate hard targets? I know it seems to be the bench mark for a lot of hand gun rounds. Buffalo bore ammo has insane loads for lever action rifles in 357 mag. 10 mm is one amazing round itself. Just ammo options don't seem to be as abundant as 357.

Why did the 10mm penetrate the 6x6 this time and not against the 45acp?

i don't know what junk bullets you were using in the 357. i have put holes i could put my thumb through in a small block chevy engine. both 158 gr lead over bullseye and factory 125 gn corbond and hive rounds.

why did the 10mm exit the 6x6 in this video but not on the 10mm vs 45acp comparison? Did i miss something?

357 out of a pistol would be interesting

One awesome show double B. 🎈🥳🎈 Two awesome calibers. ❤ I'm thinking the thinner bullet carries it farther in the medium? I EDC the S&W 2.0 10mm. It is far more accurate than any of my Glocks. I have a lot of Mountain Lion where I live and they say Black Bear are coming back into the Black Hills. Not to mention Sasquatch..... 😢

So would penetration of the 357 be more desired for bear defense?

There you have it

Both are good firearms the .357 beat the 10mm in penetration with less velocity and bettet weight retention, I dont see how you can call that a draw. The only advavtage I see with the 10mm is round capacity.

The .357 magnum in this case was severely under loaded. 1200 from a 5-6" barrel is extremely weak compared to its potential. Handloads will get you anywhere from 1450-1700fps. You've got to compare apples to apples 10mm is strong but the .357 magnum out performs it when loaded properly aka "hot" lol

510 foot pounds? That's some pretty weak .357 ammo. You almost had me.

The man of the voice!

Revolver vs pistol makes results a little skewed in favour of the pistol.

Before watching...nearly every 10mm fan complains that most factory ammo is seriously under powered. So it's the .357 mag for the win, unless you're using some hot 10mm ammo.

What type of round? Some are.made for generations. Some are made to stop in the target.

you shouldve tried full power 357but nonetheless good comparison

Good info, really enjoyed, thanks

id liketo see 357 swc 157 gr penetration in the gell.i think it would make huge cavity but not as far penetration

Why choose when you have 2 hands?

If I'm in bear country it's 44 mag every time, I'll stick with my super redhawk

357 is never a bad option. Class never goes out of style.

Of all the "caliber wars" this is the one that interests me the most. Thanks for posting it!

Would love to see this test with Buffalo Bore Ammunition.

10mm, because you'll need more than six rounds of .357 and .44 when the bears figure out how to make plate mail

This is pretty much what I expected. I'm a revolver nut, so I have a few .357s and .44 mags, but I recently bought a 10mm since so many people compare it to .44 mag... I wanted to see if that was true. What I found is that it's a lot closer to .357, and that's what you showed here.

I got my 10mm on me now! Never know when a grizzly bear my try to car jack me 😂😂😂😂😂

I love both rounds. Both ugly for whatever gets shot. 10mm is though, my EDC choice. Glitch 29. Some of my friends don't like to shoot it, say it's harsh. I giggle like a fat kid with a cupcake when I shoot it.

I have firearms chambered in both rounds, and I love them both.

"Let's turn it arrooound" stuck in my head 😅

Another comparison might be 10mm vs. .41 mag. Similar bullet sizes.

You have an excellent balance of data and banter.

I usually rock a Ruger 3" SP101 or 4" GP100 with Buffalo Bore 180 grain hard cast Keith Outdoorsman in the mountains hiking or camping.

I'd love to see you do a comparison between a 357 revolver and a 357 rifle

Elmer Keith's original .357 Magnum load as a 158 grain bullet at 1525 fps. Many loads today are much less than that. Takes about 12.5 -13.0 grains of 2400 rifle powder to get Keith's original 816 ft-lb muzzle energy ballistics. I used to load my own to that using semi-jacketed hollow points 50 years ago. Today I buy factory loads as close to that as I can. If I were reloading again the alternate powders would be 14.5 grains of W296, or 16.5 grains of Lil' Gun. Underwood has a factory load with 158 grain bullet, rated at 1500 fps muzzle velocity.

Here’s what your test didn’t identify; the .357 Magnum out of an 18 inch lever action. The .357 becomes a NEW cartridge beast out of a a lever action rifle. The 10mm only increase 10 percent or so. The .357 becomes a legitimate deer, pig, and close range elk round. It will pound your targets.

Love both G20 sf gen3 and GP100 4"

I own revolvers that shoot both 10mm and 357 mag. And if Coonans and Desert Eagles didn't jam so often, I'd own a semi auto in 357 mag.

I got my 1911 in 10 mm because I wanted .357 performance in a semi auto without having to find and pay for a Coonan or a baby Desert Eagle.

Great VID!! I'm a revolver guy myself, but the best review I've seen. I conceal carry a .357...yes...only five rounds, but very effective as your demonstration indicated. For me, a 10mm would be too big for CC, but that's just me. In the wilderness I carry a .44 mag and .357 as back up....again, I'm old school

almost all 10mm ammo is under powered unless you buy undewood or buffalo bore. people kept bitching about recoil so makers starting using less powder. almost to the point of a 40 cal power.

Re: "slow" 357 From the archived bbti test, revolvers seem to have a point where bullets of a given weight are balanced to powder burn rate for a given cylinder gap. The harder you push a heavier bullet, the higher amount of gas is being expelled out of the cylinder gap. The longer the barrel means there is more time to ejected powder instead of push the bullet, and more friction. The ideal barrel length for 357 with normal loads appears to be about 5 inches. This is an argument why 4 inch revolvers are more than sufficient and why you were having issues in a 6 inch. The other problem with 357 mag is that it can be used in rifles up to 20 inches too. While no cylinder gap, loads optimized for pistols will be worse in lever guns. Manufacturers and reloading manuals often try to balance this which leads to it falling a bit short of optimal in both. Side note, 357 sig was optimized for 3 to 4inch barrels which is why it is not worth putting it in a rifle length barrel. Most pistol rounds top out speed at 10-12 inches or so of barrel length. If it wasnt for the NFA we wouldnt see pistol caliber carbines much longer than that. 16 inches is ok but not optimal. Thank you sig for those years ago getting the atf to give us the legal fiction that are pistol braces and the 2AF for beating the atf back on the rule change in the last years.

9x25 Dillon barrels for that Glock 40 can be had cheap on eBay, and Underwood 9x25 ammo can be had at a reasonable price. That would be an interesting addition to this test.

I wonder who influenced Mr. Banana's sense of humor 😂 very 80-90ish style

The ballistics gel test on the .357 mag 😳 wow

That's some pretty lame .357 ammo at 1250-1300 fps.

We used sand bags in the army for a reason buddy…. Try 4x4” box.

It comes down two two considerations: 1. Your choice of ammo, and; 2. Capacity. Both calibers are great, but each platform has its own inherent advantages and disadvantages.

High Velocity Loads of 10mm are basically a .41 Magnum in a rimless form! Moderate Velocity Loads in 10mm are more of a .45 Auto to .45 Auto +P.....

I finally decided who you sound like. A young Carl Sagan.

Scene 10:14 - The velocity for the 142 grain FMJ 357 magnum load is way too low if you're using a maximum charge of H110. I included some data below from my revolver and loads with moderately similar weight bullets at near maximum charge of H110. Hopefully they might be useful for you. Load 1 = 140 gr. Hornady XTP JHP, Starline nickel-plated case, WSPM primers 19.8 gr of H110. Vel = 1,465 fps shot from GP-100 revolver and 1,442 fps shot from 686 revolver. Load 2 = 145 gr. Winchester STHP, Starline nickel-plated case, WSPM primers 19.3 gr of H110. Vel = 1,421 fps shot from GP-100 revolver and 1,416 fps shot from 686 revolver. The GP-100 and 686 are both 6 inch barrel. The cylinder to forcing cone gap of the GP-100 is .005 inches and about .006 to .007 on the 686.

I am sticking with my 10s

Just have to say I love your review style sir. Keep it snarky!

Cylinder gap plays a huge role in velocity in wheel guns. Most of my .357 mag. revolvers with a 6" barrel produce between 1200 and 1300 fps, but my Coonan .357 Magnum, a stretched 1911 semi-auto with a 5" barrel, inclusive of the chamber, produces 1550 fps from the same load. This why you really need to test these two cartridges side by side from the same firearm type, either revolvers or semi-auto. By testing the 10mm from a semi-auto and the .357 from a revolver, you stack the deck against the .357.

I would say something is off with your 357, I have a 686+ with a 6 inch barrel and with a max charge of H110 from Hodgdon’s website and a Hornady XTP 140 grain I am getting 1556.9 ft./s with a spread of 63.3 a standard deviation of 21.3 equaling to an average kinetic energy of 753.5 foot pounds.

Awesome video. That first wound channel in three gel is insane.

Two reasons to use the 357. 1 it's all about penetration, and secondly you can take the brass home without having to hunt for it.

Great test ! Both are powerful ctgs !! I’ve been a fan of the .357 mag for over 50 years and like the ctg !

I would like to see how the 10mm matches up against its parent the 41 mag.

Congrats for using rest for accurate shot placement--some of the yahoos are pitiful.

Here’s the BIG difference. 357=6 rounds where’s as 10mm I have 17 rounds! End of discussion!

The main difference between these two cartridges is that one can load the same bullet weight in both and shoot them at the same velocity, though they are very different in diameter. Thus the 357 will out-penetrate the 10mm in all cases, given same bullet construction, weight, and velocity. This is called sectional density. It is king when it comes to penetration.

Capacity is irrelevant for what you would be using the 357 or 10mm for. People that think the 10mm is a great bear defense gun because of its capacity clearly haven’t spent much time outdoors. You’ll be lucky to get 1 or 2 shots off on a charging bear before it’s on top of you tossing you around like a rag doll. When that happens you don’t want a semi auto because you may have to make contact shots. You’re semi auto turns into a paperweight in that situation due to potentially being pushed out of battery or an inadvertent mag drop during the struggle. I’ll always go with a revolver as a wilderness sidearm.