Congratulations on getting a Knight Muzzleloader. They are an excellent rifle. I have a old model Knight Wolverine II LK-93 which still uses the #11 percussion caps so as far as the next things needed to shoot the rifle I really could not help you.

As for a projectile I would suggest some Knight RED HOT sabots in 260 grain I believe they are. Also the 250 grain Barnes Expanders will shoot real well out of your rifle I am guessing. If you want some cheaper projectiles then get some 240 grain Thompson Center Mag Express XTP. They shoot excellent out of my short barrel Wolverine.

As strange as this might seem, this little Wolverine will also shoot patched round ball if I keep the charge around 60 grains. The accuracy with the patched roundball will amaze you to say the least if your rifle is anything like mine. It makes a great plinking load. I use the .490 diameter.

Good luck with your rifle...