Why do some companies recommend not shooting steel out of their uppers?

[afteractionreport]

More specifically their barrels...is it because of low quality metals?...

[edgerly779]

Why do it unless you are a cheapskate. Most ranges won't allow and nowhere on BLM .

[FeuerFrei]

In before someone brings up the Luckygunner article on how to burn up AR15 barrels for fun and profit.
Steel jacketed bullets are another insidious plot by Russia to subvert our way of life. [emoji16]

Sent using a long string and 2 Dixie cups

[Bainter1212]

There is this Luckygunner article........
Lol jk

It is funny. I ordered an upper once that had a big disclaimer about not shooting steel cased ammo through it on the website.

When the upper arrived, the test-fired casings in the little baggy were (drumroll please) steel cases!

So yeah.....whatever. I doubt you will find a good mechanical reason why you shouldn't shoot steel.

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[wpage]

I use them all the time...

[Dan_Eastvale]

Any foreign made AK EXPECTS it.

[broadside]

More specifically their barrels...is it because of low quality metals?...

Why do it unless you are a cheapskate. Most ranges won't allow and nowhere on BLM .

Guess it matters if OP is asking about steel case, steel jacketed or steel core ammo

[CK_32]

[Ki6vsm]

Guess it matters if OP is asking about steel case, steel jacketed or steel core ammo

He did say 'shooting it out of their barrels'. To me that means steel in the bullet itself.

[Sicarius]

Probably because manufacturers want the new owners to run the hightest quality factory ammo through their firearms to keep down on it he warranty claims. Steel typically has harder primers which also can also be a potential warranty claim. It also is a release of liability in a way if you don’t follow their instructions.
Kevin

[FeuerFrei]

Within the context of the OP's query :
Bullet is copper gilded steel jacketed + lead core and steel case + a polimer coating.
The steel cased ammo from Russia is low powered and not = xm193 or xm855. This causes stoppages in some AR clones, so...
I shoot a lot of this stuff in most of my firearms. I'm a cheap sumbich for practice ammo. [emoji51][emoji108]

Sent using a long string and 2 Dixie cups

[k1dude]

IIRC, steel case is usually polymer or lacquer coated. That coating is known to gum up some actions and cause FTE's or FTF's. Especially those actions built with tight tolerances.

Also, some steel case ammo is corrosive. If you don't clean your gun soon after arriving home, you could be sorry. I suspect many don't pay attention if they're buying corrosive or not, and then blame upper manufacturer.

So I think the warnings are simply to cover their butts for warranty work, simply because there's a lot of nimrods out there that don't pay attention to what they're feeding the gun, and then blame the manufacturer.

[broadside]

I will say that I have run Wolf steel case ammo out of my PSA and Aero uppers without any issues. In my RRA however I had a FTE and had to take it to a shop to remove. No issues with brass cases in that gun

[alexisjohnson]

There are two reason...one for the upper itself and one for the barrel.

As far as the upper goes, steel is known to be slightly harder than brass and the idea is that it will wear harder on parts like the extractor causing premature wear. I personally haven't found this to be true but then again, i've never done any actual scientific experiments.

As far as the barrel goes, steel doesn't obdurate as well, meaning it doesn't expand to seal off the chamber during firing as well as brass, so there is the potential of hot gas damage.

Again, with the cost of ammo being what it is, i wouldn't worry too much about this. By the time you've damaged anything (if ever), you can go buy a new barrel/upper parts.

There is also a study done by luckygunner out there somewhere....it's a useful read.

[CMBrowning]

Why do it unless you are a cheapskate. Most ranges won't allow and nowhere on BLM .

Because some people have their own land to shoot on.