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10mm

10mm ammo (aka 10mm Auto) is the more powerful .40 caliber predecessor to 40 S&W ammo. It is one of the few semi-automatic pistol cartridges that you could trust for defense against the largest bears, and boasts unarguably sufficient striking energy to deter urban threats as well. The 10mm’s most common bullet weights are 165, 180 and 200 grains. The middle ground, which supplies a practical balance of manageable recoil and effective stopping power, is the most popular among American shooters.

50rds – 10mm Blazer 200gr. TMJ Ammo

$26.95

$0.54/ppr

☆☆☆☆☆ 2 Reviews

164 In Stock

☆☆☆☆☆ 2 Reviews

Bullet type
Full Metal Jacket (FMJ) Muzzle Energy
490 Casing Type
Aluminum Muzzle Velocity
1050 Primer Type
Berdan Bullet Weight
200 Grain

Ballistic Data Available

10mm ballistic gel test results

We shot 11 different loads of 10mm self-defense ammo into ballistic gel with a Glock 29 pistol.

Firearm Used Glock 29

Barrel Length 3.78"

Distance to Target 10 Feet

Barrier 4-layer cloth

Ammo	5-shot average penetration depth	5-shot average diameter	5-shot average velocity
20rds - 10mm Buffalo Bore 155gr. Barnes TAC-XP HP Ammo	14.3"	0.79"	1275
20rds - 10mm Speer Gold Dot 200gr. JHP Ammo 500rds - 10mm Speer Gold Dot 200gr. JHP Ammo	19.7"	0.66"	1008
20rds - 10mm Underwood 200gr. Nosler JHP Ammo	20.32"	0.79"	1243
20rds – 10mm Buffalo Bore 180gr. JHP Ammo	18.36"	0.7"	1269
20rds – 10mm Federal Hydra-Shok 180gr. JHP Ammo	18.22"	0.58"	966
20rds – 10mm Hornady Critical Duty 175gr. Flexlock Ammo	23.56"	0.5"	1070
20rds – 10mm Hornady Custom 155gr. XTP Ammo	19.16"	0.6"	1269
20rds – 10mm Hornady Custom 180gr. XTP Ammo 200rds – 10mm Hornady Custom 180gr. XTP Ammo	20.66"	0.67"	1152
20rds – 10mm Sig Sauer V-Crown 180gr. JHP Ammo	25"	0.48"	1159
20rds – 10mm Underwood 180gr. JHP Ammo	13.38"	0.74"	1178
25rds – 10mm PMC Bronze 170gr. JHP Ammo 500rds – 10mm PMC Bronze 170gr. JHP Ammo	40.94"	0.4"	1055

Showing 1 to 11 of 11 entries

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More About 10mm Ammo

If you're new to 10mm ammunition or just have ea few questions about how it's typically used, you've come to the right place!

How Does 10mm Auto Compare to .45 ACP?

The 10mm Auto cartridge and .45 ACP ammunition are often compared, but they are two different rounds with very different results at the range and in the field. While there are differences from load to load, you will generally find that the .45 ACP caliber is more powerful than the 10mm Auto. The .45 ACP usually is loaded with a larger bullet, although there is overlap in bullet weight, and although the 10mm tends to fly faster, the .45 ACP delivers greater muzzle energy. However, downrange energy can be better for the 10mm Auto. In most cases, you will find that 10mm Auto is cheaper on a per-cartridge basis than .45 ACP. For a more in-depth comparison, check out this 45 ACP vs. 10mm article at our blog.

Is 10mm Better than 44 Mag?

Both are larger calibers than average for handguns but there are definitely differences in ballistics when looking at these two. To get an idea of which is better for your particular needs, check out our 10mm vs. 44 Magnum guide here.

Is a “.40” Caliber Round the Same as a 10mm Auto?

No. While 10mm Auto cartridges have a bullet diameter that is .4 inches, it is not the same round as other cartridges labeled with “.40” in the name. For example, 40 S&W ammunition, which used specs from the 10mm Auto during development, is a distinctly different cartridge. On this page, you will only find 10mm Auto cartridges.

Can .40 Caliber Pistol Shoot 10mm Ammo?

The 10mm cartridge is actually a bit longer than the .40 S&W. This difference in size can create problems with cycling. Also, the two cartridges fire at different pressures (the .40 S&W was designed for lighter recoil) so there are differences in how the cartridge will function internally as well. That said, many people fire both cartridges through the same handgun. You will want to conduct thorough research, consult experts, and check the manufacturer’s recommendations before interchanging these cartridges in the same firearm.

Is the 10mm a Good Self-Defense Cartridge?

Although it doesn’t share the mass popularity of the 9mm Luger or .45 ACP, the 10mm is a highly capable self-defense round that can deliver effective ballistics to a target. It can deliver muzzle speeds well over 1,000 feet per second and gives muzzle energy at about 600 to 800 foot-pounds, depending on the specific product. This won’t make it the most devastating round available, but for general users this is a perfectly capable round for self-defense and concealed carry. When choosing 10mm Auto cartridges for personal defense, look for rounds that have expanding bullets, such as hollow points or jacketed hollow points.

10mm for Target Shooting

While the 10mm is a good product for personal and home defense, it also finds use at the target range. Because it tends to use lighter bullets but still delivers speeds around 1,100 to 1,200 feet per second, it can maintain straighter trajectories. This makes it a popular round for target shooting among some circles, so if you’re using them at the range, look for full-metal jacket rounds for smooth feeding and less fouling.

☆☆☆☆☆

Great Ammo Peter Sir! I use to work for You Cleaning Primer Pockets a long time ago in Sturgis. You gave me a Job that Winter, no one else would. Re-Primed the Brass too. 10mm in my Glock 20 is Impressive. With my Custom Barrel in my Glock, getting 1350-60fps. Cup Pressure is Well with-in Tolerance too, Thanks!
John E. Burns on 20rds – 10mm Corbon 150gr. JHP Ammo
☆☆☆☆☆

Great service and great ammo keep up the good work guys ammo to go rocks!!
Adam on 20rds - 10mm Auto Federal Vital-Shok 180gr. Trophy Bonded JSP Ammo
☆☆☆☆☆

Never had to use it for defense ...yet, but it is my nightstand ammo. Capped off a few rounds in my Colt Delta Elite 1st-gen to test it and I was surprised how manageable the recoil was. It was not much more than 175 Gr. Winchester Silver-Tip ammo. Very manageable for follow-up shots.
Kevin Abq on 20rds – 10mm Buffalo Bore 180gr. JHP Ammo
☆☆☆☆☆

Pound 4 pound this 10mm gets my attention thru this S&W for accuracy. The shooter has alot to do with it as well but the S&W 10mm is the choice for me. The 10mm is a great hunting round bar none. Hogs be gone.
Chuck DeRouen on 25rds – 10mm PMC Bronze 170gr. JHP Ammo