I don't see why a #11 cap would not work with either of those. I have used a #11 and musket caps with both out of my remington and they worked. 777 does sugest using a 209 primer with the pellets, but I have shot the pyro and clean shot pellets with a musket cap and it worked fine.

I actually prefer the musket caps myself. They are just easier to work with for me..

Paul