Who is making steel case .308? I got a match grade AR-10 in with a stuck case the head had been pulled off leaving the body in the chamber. It was the hardest case I have ever had to pull it was stuck tight. Ended up using the Cerrosafe method as the broken case extractors would not budge it.

So was it a steel case that got stuck or a brass case.

If you had a hard time removing a brass case steel is a lot worse.

When I was running patrol rifle classes we banned steel case ammo.

To many failures to extract and very hard to remove them.

Yes it was a steel case and they are hard to remove.

Steel cases are usually coated with a lacquer-like substance. Load one into a hot chamber and let it sit and the heat melts the coating. If you fire it right away you’re okay, but let the chamber cool with round in there and it will glue itself in, so when you fire it the head gets ripped off leaving most the case in the chamber. Yeah, steel cased ammo works fine as long as you don’t let one sit in a hot chamber and then cool.

Who is making??? The Pinko Commies. Look at the lists, Cheaper Than Dirt, Sportsmans Guide, etc. They have no end of .223, 7,.62x39, and .308 with steel cases. The more expensive is silver coated with zinc, I think. I suspect it is to prevent ease of reloading the ammo. It is cheaper. Lots of cases left at the range and easy to pick up with a magnet. Enjoy. Happy Trails.

It is as simple as the fact that steel is much cheaper than brass. And berdan primers are cheaper than boxer. Has nothing to do with ease of reloading; mass produced military grade ammo is not reloaded.
Strictly cost.

If you shoot steel make sure your chamber is squeaky clean and polished.

If I spend a big bucks for a precision rifle it dang sure ain't gonna see any steel cases. Some how it is just wrong but then that is just me,

You wouldn't be shooting standard grade or GI ball in a precision match rifle anyway; but it is not because of the case. Such ammo is not made to match specs.
Billions of rounds of steel cased ammo has been made, and used, successfully by many countries; Russia and China, including the US, for the purpose of saving strategic materials, copper. Most WW2 German 8mm is steel cased. If it didn't work, it would not be used for combat ammo. They usually function perfectly and cause no problems.
The only issue is with some current makes which use lacquered cases to prevent rust; those can stick; better ones use zinc, or copper plating. I have never had a problem with those.

Even Hornady makes steel cased ammo. Like I said, as long as you don’t leave a lacquer-coated round in a warm chamber it works just fine.