Board Thread:Warhammer 40k General Discussion/@comment-211.26.90.25-20130827133032/@comment-8257990-20131017205257

20mm Grendade? I would put it a tad more powerful than that, condidering Bolters are known to penertrate Power armour then tear a big chunk out of that entire section of plating, that's no small feet as Astartes armour (on average, not counting these small anomalies) is pretty difficult to tear apart like that.