I bought some of these today.I usually use winchester primers,but these say they can be shotup to 20 times in between cleanings.Even have a bore scope pic on this link here to show you what it means.They cost almost twice as much as winchester primers,but if it makes cleaning easier I'll go for it.It says..
Accuracy and velocities equal to standard shotshell primers
We'll see.I will be shooting my gun next weekend,and will tell you about them.In the mean time have any of you tried them yet?
http://www.remington.com/ammo/blackpowder/bpammo.htm