well it looks like the mods took care of all of that.
The omega being able to shoot bh209 wasnt planned, as ive said before, no one was ready for bh209 when it hit the market. When bh209 first came out it was supposed to be able to shoot in everything with a 209 primer, any brand of primer and that just wasnt what we got. Certainly not complaining though!
But when the company themselves designs a plug for a certain gun, you know they have done their homework and that is the plug to use. 60* transition taper from flash channel to flash hole creates a smoother operating plug to get the hot gasses into the powder.