Glock 30 Octagonal rifling barrel?

Wondered myself, so I looked it up... Here's what the Glock Wiki says:

Glock Wiki said:

The barrels of all .45 ACP Glock pistols feature octagonal polygonal rifling rather than the hexagonal shaped bores used for models in different chamberings.[48] Octagonal rifling provides a better gas seal in relatively large diameter rifled bores, since an octagon resembles a circle more closely than a hexagon.

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Don't know if that's the absolute truth, but it seems reasonable to me.

I don't think it would change anything related to shooting lead... The octagonal barrel might make shooting lead worse... less area for the lead to fill before causing problems.

I just means that there are 8 lands in the .45acp GLOCK barrel (21 and 30 models) and 6 in the rest (9mm, 357sig, 40s&w). Also, Im not quite certain, but I believe the GAP models use 8 land barrels. Further more, its still the same type of rifling as the 6 land barrels, so no lead bullets.

Let me make one correction to me previous statement. You can shoot lead bullets out of any GLOCK, it just that GLOCK INC doesn't recommend it due to lead bullets leading the barrel. You can shot low quantities at a time of lower speed ammo, just make sure to thoroughly clean the barrel of any lead before shooting jacketed bullets. Hope this helps.

Clear as mud. Ok, I will not be shooting lead bullets, and thanks to all for the info.

Witchgrass said:

Clear as mud. Ok, I will not be shooting lead bullets, and thanks to all for the info.

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But you can Always buy an aftermarket barrel just to shoot lead through.

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Got a question for everyone. Does someone have a good pic of their barrel rifling that had lead shot through it? A friend of mine has some marking in his but I cant get a good pic of it to post on here.

I've never shot lead bullets through any of my Glocks...

Might try to Google it...

__jb said:

I've never shot lead bullets through any of my Glocks...

Might try to Google it...

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+1. i don't shoot lead through any of my guns. it's too dirty, and never cheaper than plated bullets (i don't reload). i would certainly not shoot them through my glocks, although many do. i just don't like to press my luck like that.

Agree with Don and _jb. My guess is that unless you reload your own, or have a really good friend that reloads and likes you a lot, it's not going to be cheaper for the average shooter.

TheLaw said:

or have a really good friend that reloads and likes you a lot, .

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This is me. For Christmas, my retired Father-in-Law gave me 1200+ lead 9mm rounds. I fired 200 of 'em yesterday, and other than not being as accurate as commercial loads, they went bang and punched paper. I did clean the you know what of the barrel last night, but I do that no matter what I shoot.

Seeing I have over 1000 still togo, is the Glock nylon brush good enough to clean the barrel? Is there a brass type brush available that would beven better? Is it the rifling or the chamber that the problem is from? Just questions for those who know more than I.

At the very least you will want to make sure you are using a solvent that will remove lead. Something like BoreClean or Hoppes #9...

Maybe someone that has shot a lot of lead can give you some better advice...