I just started a bowl of Sutliff Sweet Virginia in the Peterson Pub pipe with 9mm filter. It still burns faster and hotter than 507-C but the thicker bowl doesn't get as warm and the system takes the bite out of it. I am able to taste more of the flavors in the tobacco and the really strong oriental-like and pine nut flavors are a bit more muted making it a more enjoyable smoke ... so far... its going to take awhile to reach the end. Much less bite in a system pipe though.