Cast bullets and Glocks

[marshhawk]

Looking for some info on shooting cast in Glock barrels, I've heard you should not do it, what is your take on this.

Marshhawk

[farmerjim]

I know several that shoot powder coated without problems.

[scattershot]

I used to shoot cast boolits in my Glocks with no issues. I think those who had problems were the guys who never cleaned their guns at all. I cleaned mine every time I shot it, and never had a problem.

[sukivel]

That’s mostly all I shoot in mine with no problems.


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[Der Gebirgsjager]

If you do a "search" of this forum you'll find several past threads on the subject, some of which went on for several pages. Some think it's o.k., while some think it's not a good idea. If in doubt, but you want to do it, several companies make replacement barrels for Glocks that use conventional rifling and in which it's safe to shoot cast loads.

[zarrinvz24]

Their barrels tend to run fat, I feed my 9mm Glock cast boolits .357” sized. This is quite a bit larger than the commercially available .355 cast bullets many reloaders trying to save a few bucks will use. The same rules apply, slug your bore and size for +.001. IME, Glock factory barrels are pretty consistently running at .356” - I have 3 Gen 4’s and they all measure in at .356.

[downzero]

I used to shoot cast boolits in my Glocks with no issues. I think those who had problems were the guys who never cleaned their guns at all. I cleaned mine every time I shot it, and never had a problem.

I've never had a problem and I'm one of those guys who seldom ever cleans his guns at all, especially not handguns. Bullets follow more bullets down the bore and I make sure the moving parts are lubed.

[mdi]

Several prior discussions about Glocks (polygonal barrels); http://castboolits.gunloads.com/goog...179j2712847j13

I have a new 9mm, Masada, with a poly barrel and I have fired several loads with my Lee 125 RF sized to .357". Shoots fine, no excess leading, no weird accuracy. But I clean my guns after each session.

[marshhawk]

Thanks for your input, do you think bullet hardness is an issue!
Marshhawk

[Taterhead]

Hardness is not as important as fit. I shoot thousands of loads each year through Glocks and virtually all of them are coated cast bullets. They work great!

My alloy is 3% Sb and 1% Sn.

[Kylongrifle32]

I shoot hundreds of the Lee 356 -124 RN per month in my Glock 17 and other pistols. This is the standard lube groove version and all I do is clean my barrel with a good scrubbing when switching from jacketed to cast or vise versa.

I tried the Lee TL 356-124 R2 and experienced larger groups and keyhole shots. I think the difference in the two different style bullets is that the TL bullets have less bearing surface to contact the rifling.

I even shot lots of Lee 102 and 95 grain bullets thru my Glock 42 in 380 with no issued.

My alloy is a harder mix a near 5% Antimony and no tin.

[Pirate69]

If I remember correctly, there were some concerns with a portion of the case not being supported during firing. This concern was, with multiple reloads of a case, it could fail. No experience with a Glock; just what I remember.

[Cattleman406]

That problem was resolved some time ago.

[zarrinvz24]

If I remember correctly, there were some concerns with a portion of the case not being supported during firing. This concern was, with multiple reloads of a case, it could fail. No experience with a Glock; just what I remember.

That is a concern but not one unique to Glocks. Many 40SW handguns had unsupported chambers. Also that issue is not one related to the use of cast boolits, and is an issue with J bullets as well. While the OP hasn’t mentioned caliber, the issue of GLOCK smiles on 40 brass has mainly been addressed in Glocks of a Gen 3 or newer vintage. As I mentioned earlier, the rules of reloading need always be applied, thoroughly inspect each and every casing prior to and after each step of the reloading process.

[marshhawk]

Thanks to all for the info, I am going to slug my barrel and and start loading!
Marshhawk

[McFred]

I haven't tested extensively with a lot of alloys/moulds/powders, but I found a combination that works in my factory glock barrel:

http://castboolits.gunloads.com/show...-RF-in-357-SIG

[bpatterson84]

Many thousands of powdercoated cast boolits through all my glocks, not a single issue whatsoever. It's just another example of how the boolit coating revolution has changed our world for the better.

[marshhawk]

Thanks Again for all your comments, and advise!
Marshhawk

[W.R.Buchanan]

Go here and make sure you read all the pages so you fully understand.

http://castboolits.gunloads.com/show...locks-and-Cast

This has been a sticky in the Pistol Forum for 13 years. We are all still alive!

Randy

[Hanzy4200]

I have done a LOT of cast shooting in Glocks. I currently own a G43, G30S, and a Gen 2 G17. They have all been fed 98% cast since owning them. Glock barrels lead no more than any other barrel given you size correctly. Why this myth persists I will never know. You will find that anyone screaming that it's a terrible idea, has never tried it.