I found that in that article they mentioned the barrels were heavily worn when shooting steel cased as well as being "shot out" with a very limited number of rounds.
The operative part of the article is the statement about the bi-metal jackets:
Federal 55gr – Brass-Cased – Copper Jacket
Wolf 55gr FMJ – Steel-Cased with Polymer Coating – Bi-Metal Jacket (steel and copper)
Tula 55gr FMJ – Steel-Cased with Polymer Coating – Bi-Metal Jacket (steel and copper)
Brown Bear 55gr FMJ – Steel-Cased with Lacquer Coating – Bi-Metal Jacket (steel and copper)
It is the steel in the jacket that wears the steel of the barrel as the bullet passes through it. If you can take a magnet to the bullet (not the case) and it cannot be picked up, you're probably good to go regarding wear. As others have said, the steel CASE is mostly irrelevant to the barrel, other than maybe beating on the ejector a little harder when kicking out the spent case, should fine especially out of a glock for 450 rounds. Also note though, some ranges don't allow steel case because they don't want to confirm bi-metal jackets that can spark a fire and beat up real estate (that or they want to make money reselling used brass cases for reloading
You've probably got Winchester Forged which is steel case with a brass jacket lead core bullet and is fine for your barrel:
https://www.academy.com/shop/pdp/winchester-usa-forged-9mm-luger-115-grain-handgun-ammunition
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