It sounds like it is a non-filtered pipe, it also sounds like you might be drawing a bit to hard if you’re getting more than just an occasional piece of tobacco.
Take a pipe cleaner and insert it thru the bit, shank and into the bowl then load your tobacco, when you pull out the cleaner it should leave a small opening in the bottom of the bowl. This might help a little.
Something else you can try is to separate a few of the longer strands of tobacco and load them first, this will act kinda like a screen in the bottom of the bowl .
Hope this helps a little.
If I see a stick that made a noob nic sick,I put it on my list as a must try. (UBC03)