What you want is a super jag. It's about 3" long and screws into the end of the ramrod. They are caliber specific, and usually come with the factory package. The end is cupped and will accomodate RB or the pointed projectiles.
watch that super jag i had one sap off in my barrel i thought that i broke a pellet
when i pushed down i did see that the jag was gone (still in my omega barrel)
WOWWEEE a 10GA single shot don't kick that hard think i had a lose tooth
the barrel and me were OK i found the jag stuck in the burm behind the 100yard target
just saying look at the end of you ramrod i still use a super jag but i tip the barrel
down before each shot now and look at the end of my ram rod