gearheart.. welcome to the forum. It is good to have you here.
As for the twist, they are much faster then that. Perhaps the rod did not spin with the rifling as you thought. I thought they were like a 1-24 twist or something like that. Normally they shoot conicals and sabots real good. But I do not own one, so I am only guessing. Perhaps you will be able to enlighten us with some loads from your rifle..