Biggest thing I'm seeing here is depth (HB, I think the others have commented on the LB enough). It's actually not just the fact that you don't have full butt-to-ankles depth here, but I believe I've been seeing the same thing in your other videos. You seem to be consistent about not hitting that position. I'm certainly not about to scoff at that kind of weight for the squats, but you need to reinforce the movement pattern of the full ROM squat for your weightlifting.
Like George implied though, I'm more concerned about carry-over into your regular lifting than a not-quite-full ROM HBBS with 315lbs.