Talk:Iron Shrapnel/@comment-24.156.7.207-20150415150041/@comment-172.15.16.99-20150528002806

It won't. When used, it'll cause the radial AoE it mentions, and it "clears" Iron Skin to do so. Accordingly, you'll have to press it twice (once to trigger Iron Strapnel, and again to reapply Iron Skin).

The key to this is the knockdown is NOT tied to the remaining health, only the damage. It is most useful as a CC ability you can trigger when your Iron Skin is almost fully depleated. Works especially well when Heavy Gunners start appearing in T2/T3 survival as a way to quickly knock them down (especially since they're gonna strip your Iron Skin off in a couple seconds anyway.)