That’s what I figured. Like Flap said, you’re exactly the same weight you were back in July. That’s at least three months of zero weight gain… which means zero size increase. Like, where did you think the muscle going to come from?
You didn’t answer the question about your strength progress in the 8-10 rep range, but the fact that you’re not gaining any bodyweight makes it a moot point.
It’s right around whatever your current calories are. So… fix your diet.
I don’t know what this means.
Like Hostile said, put yourself through 20-rep squats. You’ve said your max is around 245, so try squatting 185 for 20 reps, taking 2 or 3 breaths between every rep and not racking the bar until you’re done. Do it twice a week for the next 4 weeks, and add 5 pounds each week (not each workout).
But the bottomline is that you need to eat more. There’s no point in changing your training if you don’t increase calories significantly. Over-focusing on your training without fixing your nutrition is just going to waste even more time. What, exactly, did you eat yesterday?