You can shoot steel ammo out of your rifle. Like mentioned above. Make sure you clean your rifle well after doing so because of the coatings the case can have on it. Also, do not leave a cartridge in the chamber after doing some shooting. If the rifle sits long enough, the coating can melt and then solidify when the barrel cools down effectively gluing the cartridge in the chamber. This may not happen all the time but it can happen and people have had a heck of a time getting the cartridge back out of the rifle.