I want to order a Kibler Colonial Rifle Kit in the near future, but I am somewhat conflicted as to what caliber to order. All of my black powder experience has been with a .75 caliber Brown Bess Musket. This will be my first BP rifle. The Colonial Rifle kit is available in .50, .54, and .58 caliber. What do you see as advantages and disadvantages of the different calibers? Thanks for your help!