I just ordered a new knight disc extreme to replace an old lk-93. I have been wanting this gun for years and had planned to use blackhorn 209 with cci/federal primers. 777 is too dirty imo. I have searched many forums and i know there have been some changes in the breech plugs to use bh209. I thought knight used to offer a long stem breach plug for loose powder but its no longer offered. I did see a vented one. This is the fpj full plastic jacket version. Im assuming Knight has opened the flash hole a little for this powder. Most of the forums info is from 2008 to 2014 discs. So is the current disc breach plug compatible (or optimized) for blackhorn or do i need to order the vent breach plug? My gut feeling says it will fire. Im sure Cuyagad(sp) would have the low down.

Also is the bare primer breach better and have any blow back?