just the #60 if it will work. I say to adjust the headspace by backing it off until it lightly touches the primer and then measure the amount needed. I know with the #60 ring in my Optima i was able to adjust it perfectly out to .016 which gives a nice firm hold on the primer.

Head space how to:
http://gandersmuzzleloadingblog.blog...pem-clean.html

O ring,
http://frontiermuzzleloadin.powergui...ustment-part-2