Cast bullets in a glock?

[Vdubman27]

I have heard you shouldn't shoot cast bullets in flocks why is this? Also I see people selling brass and say it has not been shot in flocks what's up with that? Thanks for the info

[n2stackin]

They say lead reloads are a no go due to the rifling used in Glocks. Polygonal vs conventional.

Quote from "GlockPro" website...

Polygonal rifling is shaped like an arc, whereas conventional rifling is squared off at the edges. Hexagonal and polygonal rifling seals in the gasses slightly better, as there's no 90 degree crevice for gas to escape through ahead of the bullet. For this same reason, lead buildup can cause overpressure problems.

[Justintoxicated]

I have heard you shouldn't shoot cast bullets in flocks why is this? Also I see people selling brass and say it has not been shot in flocks what's up with that? Thanks for the info

Not shot by sheeple?

Glocks do not have fully supported chambers and tend to bulge brass which is bad for reloading. I have reloaded glocked brass fine though. It's more serious in certain calibers like .40, although, my friend reloads his glocked .40 brass all the time I don't think he has a special die for it either.

Lead Bullets are not recommended in polygonal barrels, if it builds lead builds up in the barrel it can create unsafe pressures.

It's debatable though I suppose, my HK manual says not to use reloads period, and my reloads often work better than factory ammo :P

[mr2ndamendment]

Not shot by sheeple?

Glocks do not have fully supported chambers and tend to bulge brass which is bad for reloading. I have reloaded glocked brass fine though. It's more serious in certain calibers like .40 though, my friend reloads his .40 all the time for his glock.

Lead Bullets are not recommended in polygonal barrels, if it builds up it can create unsafe pressures.

^This.

I've seen cast/non-jacketed bullets shot through glocks, but after 50 rounds the barrel got a thorough cleaning. Probably not at all factory-recommended but it worked for 500+ rounds. Good to know for the zombie/SHTF scenario but not something I've ever do when jacketed bullets are available. One of the reasons why I have issues buying a G20 for bear defense >can't use my favorite Buffalo Bore cast bullets.

From what I understand, just about every semi-auto with a integral feed ramp setup has some degree of an unsupported chamber but with Glocks it's known to be the most dramatic. If I was reloading for a Glock (or just shooting brass that was shot out of a Glock) I'd be extra careful to check my brass and I'd probably limit how many times I reloaded the same brass compared to "regular" loads. That, and I'd probably load my practice ammo a little lighter to reduce kick, reduce powder consumption, and lower the stresses/stretch on the brass -especially high-pressure cartridges like the .40.

[Justintoxicated]

^This.

I've seen cast/non-jacketed bullets shot through glocks, but after 50 rounds the barrel got a thorough cleaning. Probably not at all factory-recommended but it worked for 500+ rounds. Good to know for the zombie/SHTF scenario but not something I've ever do when jacketed bullets are available. One of the reasons why I have issues buying a G20 for bear defense >can't use my favorite Buffalo Bore cast bullets.

Isn't buffalo bore only recommend for ruger red/blackhawk or higher framed revolvers though? or is that just the magnum calibers? Maybe I'm thinking of something else.

[mr2ndamendment]

Isn't buffalo bore only recommend for ruger red/blackhawk or higher framed revolvers though? or is that just the magnum calibers? Maybe I'm thinking of something else.

Most of what they make is for semi-autos but they of course have revolver loads. I'm not certain but I wouldn't be surprised if they had restrictions on what types of guns you shoot their hotter stuff out of. This is the 10mm stuff I was talking about:

https://www.buffalobore.com/index.php?l=product_detail&p=219

Interestingly enough, they actually used a Glock20 in their testing data. They have a commitment to testing loads through real guns rather than a test barrel. I still wouldn't feel that confident shooting too many hard cast lead BB 10mm rounds out of a polygonal barrel though.

[Dattebayo]

Another option if you want to shoot lead through a Glock is use Copper coated or FMJ bullets after you shot a few magazines of lead. This will push out any lead build up in the firearms. I often shoot lead in my firearms, but it typically leaves lead fouling that is very difficult to remove, so I just use FMJ/Copper coated bullets to clean it out for me.

[M1NM]

I had a 17L that had shot 1,000s of 124 gr RN lead. They were target loads so not fast enough to cause leading problems. When I bought it he included about 500 rounds he had left. Shot them in the 17L and my 19 with no problems.

[Bill Steele]

I have shot many tens of thousands of lead bullets through my Glocks at everything from light target velocities to heavy 10mm and 45 Super loads.

I have only seen one occasion where the Glock rifling (or something else unique to the Glock barrel), caused more leading than I got from the same load through a conventionally rifled barrel. I was shooting .45 Super loads through my G21SF and also a 1911. I was running them pretty hard (225gr LTC at over 1200fps). Somewhere around the hundred round mark, the rounds out of my Glock started taking on a mind of their own POI wise. The 1911 seemed to be shooting fine. I stripped the G21 barrel and it was a leaded mess. I now always check a new lead load carefully when I start using it from one of my Glock's. I start with a check for leading each magazine, move to each 50 round bag, then finally I always check and clean my guns after the days shooting. Most of my favorite lead loads are no leading affairs and I don't worry about leading buildup at all.

Recently I switched to coated lead bullets (lead with an epoxy coating) from companies like Bayou and SNS Casting, no leading ever.

[Carcassonne]

I shoot cast bullets in my Glocks. I also clean my barrels frequently.


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