Steel vs. Brass Ammo
Is cheap steel-cased ammo bad for your gun? The real tradeoffs for practice and storage.
The Bottom Line
Steel-cased ammo (Tula, Wolf, and similar) is cheaper than brass because the case is steel instead of brass, often with a polymer or lacquer coating. For range and practice, it works fine in guns designed to tolerate it — most AKs and many ARs run it without issue. The tradeoffs: steel doesn't seal the chamber or extract quite as smoothly as brass, it can run dirtier, and the bi-metal jackets on some steel ammo accelerate barrel wear over very high round counts.
Brass-cased ammo is cleaner, extracts more reliably, is reloadable, and is gentler on your barrel and extractor — which is why it's preferred for defensive use and precision shooting. The practical take: steel is a reasonable money-saver for high-volume blasting in a gun that likes it, but run brass for carry, competition, and any firearm where reliability and longevity matter. Avoid steel in finicky or premium guns.