This 9mm ammo may appear to be brass-cased at first glance, but look closer and you will see that it actually has bimetal cases. These are nearly entirely made out of steel, which is Wolf’s style because steel is far more affordable than solid brass.
On the exterior the steel cases are copper-washed. This helps them feed a little more freely, and it also provides some protection against corrosion. But be certain: This ammo’s cases are not reloadable, and they’ll lead to more fouling of the action than brass cases would have.
Wolf’s 115 grain FMJ bullets are just like this ammo’s cases, for that matter, because they have bimetal jackets. The bullet’s copper-washed exterior conceals its primarily steel jacket. That steel is too soft to cause significantly faster wear to the barrel, and it keeps the bullet from deforming during ignition or penetration of soft tissue. Most importantly, it makes the bullet magnetic.
But so much steel does make Wolf’s ammo super friendly to the old checking account, which is why it has so many fans. Even this ammo’s Berdan primers are a little more economical than the Boxer alternative, though they are just as non-corrosive!
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