Glock Polygonal Barrel VS Hard Cast Bullet

[gpark09]

How reliable is the myth/fact saying changing out the factory Glock barrel with aftermarket barrel such as KKM or Lone Wolf if we will be shooting hard cast bullets such as Buffalo Bore 10mm Outdoorsman ammos?

[SkyHawk]

Hard cast is fine in Glock factory barrels. Read this:

https://www.buffalobore.com/index.php?l=product_list&c=59

[003]

As noted above hard cast is fine. The issue is with lead bullets. While lead can be used. Detailed and frequent leaning is required.

[TAS]

Ironically, I bought a lonewolf barrel for my G20 so I could shoot cast bullets like the Buffalo Bore and it’s the only thing that causes me problems. The chamber on the LW is too tight for the Buffalo Bore to chamber consistently.

Although I haven’t shot any other cast bullets out of it, the LW barrel has been 100% reliable with factory ammo (mag tech, ppu, Georgia Arms, to name a few) and my own reloads.

[plumbum]

The only lead ammo I’ve put through my G20 is Grizzly 200 gr hardcast - no issues encountered and no leading.

[ar15robert]

Just dont shoot all day with it.If your gonna shoot a few no big deal just clean it after

[gpark09]

Just dont shoot all day with it.If your gonna shoot a few no big deal just clean it after

Yeh... strangely that's what we've been hearing. What's up with that?

[gpark09]

Hard cast is fine in Glock factory barrels. Read this:

https://www.buffalobore.com/index.ph...duct_list&c=59

Yep. I read the text book. What's confusing is there are plenty of ppl out there still insist on the barrel swap.

[003]

Yep. I read the text book. What's confusing is there are plenty of ppl out there still insist on the barrel swap.

I suspect that is because some folks confuse hard cast with lead.

[Snoopy47]

How reliable is the myth/fact saying changing out the factory Glock barrel with aftermarket barrel such as KKM or Lone Wolf if we will be shooting hard cast bullets such as Buffalo Bore 10mm Outdoorsman ammos?

It's a fact. If you shoot cast lead too much out of a OEM Glock barrel it will line the barrel with lead, over pressure will develop and you run the risk of something blowing up.

I have personally done it and ruined a G22 barrel.

I ran 100+ rounds of cast lead through without cleaning. Toward the end of the night the gun felt snappier and snappier. Got home and started cleaning it, and the barrel looked like I dipped it in silver paint.

It took forever to de-lead everything, and by time I was done I could see a kink in the rifling grooves down the barrel. I run my fingers across the length of the barrel and feel a slight bulge.

I got off lucky.

BTW, these were literally bullets I cast myself.

[SkyHawk]

I suspect that is because some folks confuse hard cast with lead.

Yes - apparently people do confuse 'cast lead' with 'hard cast'. They are absolutely not the same thing. One will lead up a Glock barrel, and the other will have no effect whatsoever.

Here's another article for those that get it twisted

https://www.buffalobore.com/index.php?l=product_list&c=54

Many gun owners refer to hard cast bullets as 'lead' bullets. In most cases, they do not understand the drastic differences or they would not use such an inaccurate generalization. This generalization is as inaccurate a generalization as referring to all motorized vehicles as Volkswagens.

Hard cast bullets may contain some lead and be grey in color, but that is where the similarities stop. Hard cast bullets can be formulated of numerous alloy mixes (antimony, silver, tin, etc) containing some lead, but the alloys make the bullet much harder than pure lead. Pure lead has a Brinell hardness # of about 4. Most hard cast bullets will have a Brinell hardness # of 11 to 30 and as such are several times harder than lead.


... (continues)

[plumbum]

It's a fact. If you shoot cast lead too much out of a OEM Glock barrel it will line the barrel with lead, over pressure will develop and you run the risk of something blowing up.

I have personally done it and ruined a G22 barrel.

I ran 100+ rounds of cast lead through without cleaning. Toward the end of the night the gun felt snappier and snappier. Got home and started cleaning it, and the barrel looked like I dipped it in silver paint.

It took forever to de-lead everything, and by time I was done I could see a kink in the rifling grooves down the barrel. I run my fingers across the length of the barrel and feel a slight bulge.

I got off lucky.

BTW, these were literally bullets I cast myself.

I used to shoot piles of cheap lead reloads out of my Hi Point carbine - it ate them up but dang would it make a mess! I know I scrubbed as best I could, only thing that got it mostly clean was shooting more wolf ammo out of it!

[bohoki]

baked powdercoat has been the now thing for a while i have aftermarket barrels in mine just so i don't have to clean them i just run a brush down them once after coming home and just accept it will be streaky in the grooves

[gpark09]

After all your opinions it looks the hype came from the confusion between "Hard Cast & Lead" ammo. Good to know.

If indeed the ammo was lead cast, it's something I need to lookout for, but hard cast is another story.

[gpark09]

It's a fact. If you shoot cast lead too much out of a OEM Glock barrel it will line the barrel with lead, over pressure will develop and you run the risk of something blowing up.

Buffalo Bore said their bullet is Hard Cast, not Lead Cast.