Redhawk: That certainly is different from how I treat my barrels and might be part of the solution. I know there is a debate as to whether you can "season" a new allow rifle barrel with bore butter. I guess if it works for you I certainly would not change it. I mentioned that I have all three breechplug face designs. Flat with a very small dimple at the touchhole. Partly concave with a flat ring around the concave portion and fully concave with no flat section. None of these seem to get rid of the crud ring for me. I think the concave with the flat ring around it is the latest and probably what the Omega comes with now. The concave section is supposed to help ignition of loose powder and the ring is supposed to prevent crushing pellets so you can shoot either. My .25ACP conversion has the concave with the ring shape.
Try some of the New Win Triple Se7en 209's. See if they work for you.
Here's What Winchester says about their new offering:
Winchester Ammunition has introduced a new primer specifically designed for use in muzzle loader guns that use a 209 size primer.
The new primer is called the Winchester® Triple Se7en® Primer. It was designed specifically for Hodgdon Triple Se7en® and Pyrodex® pellets but also works great on loose black powder and black powder substitutes.
Most of today’s modern muzzle loading in-line rifles are designed to use a size 209 shotshell primer. These primers deliver a hot flash, which gives a consistent ignition of the black powder or pellets being used. The down side to these hot primers is the chance for build up of a fouling ring in the barrel of the gun which hinders follow-up loading for second or multiple shots.
Winchester’s Triple Se7en Primer is a clean burning primer that reduces fouling ring buildup, allowing muzzle loader shooters easy second shot loadings.
The new Triple Se7en Primer has a unique look with a black cap to distinguish it from other 209 primers. These primers are clam packed 100 per package with clearly marked graphics to separate them from other primers.
The new Triple Se7en Primer from Winchester is the natural choice for any muzzle loading shooter who uses 209 primers.