Glock 10mm vs 9mm: Which Caliber is Right for You?

Here at Glockmeister, we get a lot of questions about the differences between the 10mm and 9mm calibers for Glock pistols. As leading retailers and experts on all things Glock, we're here to provide an in-depth comparison of these two popular calibers to help you determine which is best suited for your needs.

Overview of 10mm and 9mm

First, let's start with a quick rundown of each caliber:

10mm

Higher velocity and energy than the 9mm
More recoil and muzzle rise due to increased power
Heavier bullets have greater penetration capabilities
Ideal for hunting medium-sized game up to 150 lbs
Used commonly in field guns for wilderness defense

9mm

The most popular handgun caliber in the world
Moderate velocity and energy levels
Manageable recoil for faster follow-up shots
Typically used for defensive purposes and target practice
Well-suited for concealed carry

So in basic terms, the 10mm packs more power while the 9mm offers faster shooting and easier control. But there are more detailed differences to consider.

Ballistics and Shooting Performance

When it comes to ballistics, the 10mm clearly has an edge over the 9mm in velocity, energy transfer, and penetration. Typical 10mm loads drive a bullet at velocities of 1,200 - 1,400 fps, generating 500-700 ft-lbs of energy. This allows 10mm bullets to penetrate deeper than 9mm.

However, with the increased power comes more recoil, especially in the lightweight polymer Glock pistols. Quick follow-up shots will be easier with a 9mm. The moderate energy and velocity levels of the 9mm make it more controllable for defensive shooting for many users.

So if maximum stopping power at longer distances is paramount, such as hunting or wilderness defense, the 10mm has the advantage. For self-defense and tactical applications where rapid shooting at close quarters is needed, the 9mm is often the better choice.

Suitability for Carry and Defensive Use

For concealed carry purposes, smaller and lighter guns chambered in 9mm tend to be better suited for comfort. The Glock 43X and 48 MOS long slide 9mm models are quite popular amongst those wanting an easily concealable, yet shootable, self-defense gun.

The smaller size and lower recoil of these models allow for accurate shots under pressure. Higher capacity 9mm mags also mean more shots before reloading.

However, those wanting a bit more power on tap from a concealed Glock tend to favor the Glock 29 in 10mm. Though wider than a 9mm, it's still suitable for IWB or OWB carry. The 10mm power in such a small semi-auto package gives confidence that penetration will be substantial if needed.

So again, it depends on your specific needs and preferences for EDC applications concerning power versus concealability.

Hunting Applications

When it comes to using a Glock for hunting purposes, the 10mm, such as the Glock 20, dominates as the choice caliber. From whitetails to hogs to black bear, the 10mm has enough velocity and energy to ethically take game accurately within reasonable hunting distances.

The 9mm, while suitable for small pest control, lacks the energy to reliably put down big game. The minimal recoil does allow for quick follow-up shots if needed which aids in hunting utility. However, most hunters willing to go into the field with a Glock pistol want maximum stopping efficacy, making the 10mm the top option.

Cost and Availability

In terms of cost and availability, 9mm ammo clearly reigns supreme. It's the most widely produced handgun ammo in the world, making bulk 9mm ammo very economical. Virtually every major ammo brand produces multiple types of 9mm loads catering to various needs. And as the most popular round, 9mm ammo can always be found on dealer shelves even during shortages.

Alternatively, 10mm ammo has fewer offerings overall and tends to cost more per round in bulk cases. Though as it continues to increase in popularity, more factory loads are becoming available. Still, expect to pay upwards of 25-50% more for 10mm over equivalent 9mm rounds.

Glock Handgun Models by Caliber

If you've narrowed it down to one of these two calibers, below are the current Glock pistol models available at Glockmeister in 9mm and 10mm:

9mm Glock Models

G17
G17 MOS
G19
G19X
G19 MOS Gen5
G45
G43X
G43X MOS
G48
G48 MOS

10mm Glock Models

G20
G20 MOS Gen3
G21
G21 Gen4 MOS
G29
G29 MOS Gen3

So in the full-size duty gun sizes, Glock offers both the G17 and G19 in 9mm, while in 10mm the comparable sized models are the G20 and G21.

For concealed carry, 9mm shooters can choose from the G43X, G48, and their optics ready MOS versions. The subcompact powerhouse G29 in 10mm is the counterpart for those desiring maximum power from a small semi-auto package.

And of course all these models can be further customized with Glock parts and accessories to tailor them precisely for your specific needs. Our Glock certified armorers at Glockmeister can assist with expert recommendations.

Glock 10 mm and 9 mm FAQs

What Glocks are available in 10mm?
Glock currently offers three 10mm pistol models: the G20 and G21 (full-size frames) and G29 (sub-compact).
What about recoil between the two calibers?
The 10mm has sharper perceived recoil, making rapid fire more difficult without extensive training. The 9mm has very manageable recoil, allowing most shooters to quickly realign sights even under duress.
Which is better for home defense?
The choice here depends on your level of training. For those without much practice shooting defensive pistols, a Glock 17 or Glock 19 in 9mm may prove better choices than say a Glock 20 in 10mm.
Can you hunt deer with a Glock in 10mm?
Yes. Using proper defensive oriented hunting rounds that expand and penetrate, the 10mm is suitable for taking whitetails within reasonable distances.

Ready to Get Your Next Glock Pistol?

As you can see, both the 10mm and 9mm calibers have their pros and cons depending on your intended uses. The best advice is to carefully analyze your specific needs and shooting experience to determine which Glock model in which caliber is right for you.

The knowledgeable staff here at Glockmeister can further help you select the ideal Glock.