Sabotloader
You do have some traffic ideas. I bored the hole on the plug I converted to use a vent liner all the way like you said, Now I don't know if its the vent liner or the larger hole or both in combination but it makes a big difference. I have been using it along side the Endeavor which still has a stock BP to see how much difference it makes in accumulated carbon and its a BIG difference. When I have shot enough to get the Endeavor 's plug half full of carbon the Triumph with the same number of shot has only a little. It also made a difference the accuracy; the loads that were accurate before still are but I can go up or down 10 gr and still get a group of under an inch it shoots a bit higher or lower with more or less powder but it appears to be a most excellent combination with BH 209.