I bought one of these kits at Cabelas and I was impressed. I shot 30 times and pulled the breech plug on my Encore and it wasn't that bad, just wiped it out and kept going. Basically all it is, is a brass bushing milled to 209 primer size specs and you insert a small rifle, large rifle primer into it. They are reloadable. Worked great with Pyrodex pellets. The whole poing of them is the fouling of the breech pug using 209 primers is that the hot primer going off through a small hole causes all the breech plug fouling. I also shot the Kleenbores and there was a significant amount of fouling compared to the Variflame system. You can read the write up about them on
www.prbullet.com. I thought is was a gimic thing, but what the heck. Anyone else tried them and if so, what was your take on them. Cabelas sells them for about $24.00 for the kit which includes 10 reloadable/reusable primer housing. 100 CCI400 primers cost 1.95.