Alex,
This is from the book. Recommended Loads: Knight Rifles are designed to perform best between 80 and 120 grains of Black Powder FFg, Pyrodex 'RS' or 'Select', pellets or equivalent.
Idaholewis , What I have used with plunger style gun is the MUZZLELOADER SCOPE PROTECTOR from Thompson Center Arms with a part # of 7339 which is made for a 1 inch scope