40 S&W

[ZombieKiller]

Hi guys ....tried a search but no dice......

I tried to purchase projectiles for my first loads (.40 S&W ).....

The guy helping me said that I needed to measure the barrel diameter of my Glock22 before I purchased because it could be .400 or .401 and that "type of mistake kills people at the range"....

Another employee there told me that I could use the 10mm......

Man they confused the hell out of me- so I turn to the experts here on Calguns.

Is there a standard measurement that I could go with for Glock 40cal barrels?

My Lyman manual also lists .401 and .400 as options.....

As always--> Thanks in advance for the help!!

[Fjold]

Glocks chambered in 40S&W use .400 diameter projectiles.

From your question I'm lead to believe that you are just starting out reloading. Please read everything in your reloading manual as it pertains to procedures, safety, etc. before you start.

[hylander]

could be .400 or .401 and that "type of mistake kills people at the range

What a Crock

Also .40S&W and 10mm use the same bullets, .400 and .401 depending on the bullet manufacture

[ZombieKiller]

Glocks chambered in 40S&W use .400 diameter projectiles.

From your question I'm lead to believe that you are just starting out reloading. Please read everything in your reloading manual as it pertains to procedures, safety, etc. before you start.

Will do and have been reading plenty (thanks for the concern) ......

I am finding that this reloading stuff is, if not more, addicting than the firearms themselves. My bud gave me a set of 9mm dies and now I'm gonna have to get a 9mm pistol Thanks for the help guys......

[ar15barrels]

The guy helping me said that I needed to measure the barrel diameter of my Glock22 before I purchased because it could be .400 or .401 and that "type of mistake kills people at the range"....

Some people don't understand that coffee is hot and a jury even awarded someone millions of dollars for spilling hot coffee...

Ask the guy at the range to cite just ONE specific example of people being killed because of improper bullet diameter selection.
A larger cast bullet is generally best.
It will swage down in the barrel as necessary.
An undersized bullet would cause excessive leading.
That's about it.

Now, there's lots of controversy surrounding the use of lead bullets in glock barrels.
The standard practice is to get a replacement barrel with conventional rifling if you want to shoot lead bullets.

[ZombieKiller]

I never use lead in my GLOCKs...I wanted to go FMJ or JHP for my loads. And after reading the madness on the KaBooming G22s, I figred I'd start with new brass.....

This advice was given at Bass Pro btw....I was on my way back to SD and wanted to see their prices and selection.

[ar15barrels]

I never use lead in my GLOCKs...I wanted to go FMJ or JHP for my loads.

Jacketed bullets will only come in 0.400"
The 0.401" option is purely a cast bullet thing.

[CAT_101]

Jacketed bullets will only come in 0.400"
The 0.401" option is purely a cast bullet thing.

Was going to say the same thing..

[ar15barrels]

Was going to say the same thing..

Great minds think alike.

[kurac]

This may be a myth but I understand you should stay away from using lead in the glock because of the polygonal rifling can cause higher pressures.

[ar15barrels]

This may be a myth but I understand you should stay away from using lead in the glock because of the polygonal rifling can cause higher pressures.

The polygonal rifling does NOT cause higher pressures.
It simply leads up worse than conventional rifling.
It'sthe buildup of lead in the bore that causes the higher pressures.

If you run lead bullets in a glock barrel and your barrel is not showing leading, you are fine.
If it builds up leading, you need to stop and clean it, or just not shoot lead bullets in that barrel.

I shot thousands of rounds of lead through a glock.
The barrel would lead, but I would pull a bore snake through it a few times a day during the match.
This would keep the leading "controlled".