I have been out with a named archer thrall and while they use the leg cripple shot repeatedly, to no effect on critters, they only use the power shot one in 100 times it seems. I gave them 100 star metal arrows and they only fired one power shot before running out. I was watching for it as best I could. You can hear it too usually.
Well, just seems like this is their most effective shot and they are a full named archer. Wouldn’t they be using the power shot more?