Free: Contests & Raffles.
209 is not legal in Washington to hunt with. I would go with the #11, that is what I use. Welcome to the world of Muzzleloading. Many fun times ahead of you.
It's unfortunate that you only have a 24" barrel... with 28" barreled muzzleloaders in 2009 I watched someone take a 350 class bull at 241 yards through the spine and then in 2010 from the same blind I watched someone else take a 300 class bull at 212 yards straight through the heart... there is no general distance for a muzzleloader... PRACTICE!!! you'd be amazed what you can do