I use lots of Wolf in my AR, with one (1) ammo-related issue ever (stuck case).
People don't like it because the case is steel, the primers are berdan, so they aren't easily reloadable. Also they used to use a laquer coat to protect the firearm from steel-on-steel erosion and people said it would "melt" off the casing when the chamber got hot enough, then (I guess?) cool down enough to stick, which has supposedly caused extraction issues. I wouldn't know; the one stuck case I had was not laquer and may have been due to poor extractor tension. They moved to a polymer coating that is supposed to stay on the case even during high heat.
It does smell funny but you get used to it.