Same thing here, buddy. It really depends on the tobacco though, and it's moisture content.
Though it doesn't really matter, so long as you develop a cake in the bottom half. To do so just smoke half bowls, and then you won't pour out good baccy either. However if you still can't smoke to the bottom of a half bowl, then it's likely a plumbing issue and your draw needs to be engineered better. But otherwise it doesn't matter really. Just make sure your baccy is dry enough(play around with drying times), otherwise what happens is moisture collects in the bottom of the bowl and soaks the tobacco (is the unburnt stuff dry and crisp, or wet?). also moisture can travel up the shank (a condensation of sorts) and cause gurgling. That could also be a pipe issue, though running a cleaner down the stem and shank should solve that easy enough.