Morrowind and Oblivion had them at 25% and Bretons at 50%, with Bretons knocked down to 25% in Skyrim, I wonder if maybe 10-15% would be appropriate for orcs? I realize Berserking is arguably THE best activateable ability in the game but it doesn't benefit spellcasters very much other than the flat damage reduction, and I'm a svcker for consistency.
