I can only give you my experience. Mine will shoot loverleafs at 50 yards, and about 1 1/2 inches at 100. The load is 150 gr. 777 and 250 grain Barnes polymer tipped sabot. However, I will tell you this: Mine is very finicky! Some bullets shoot great with 100gr of 777, and go all ove the farm with 150 gr. I have had groups open up and accuracy decease when I have switched from it's pistol configuration back to the Muzzleloader. That said, I have killed 11 deer with it in the last 4 years, and it is utterly reliable. It has gone bang every time from 100 degrees, to -20.
You will most likely need to experiment with bullets and charge weights, but hey, shooting is fun. Here are some bullets that have printed best for me:
250 Gr Hornandy LocknLoad sabot 100 gr 777
250 gr Shockwave, 100 gr 777
250 Barnes TMZ, 150 gr.
I'm sure that you will find others that work as well or better, but they will do the job! Good luck
K.K