I have had a lot of success with the XTP sabots in my inline NEF .50 cal. I use Barnes sabots in my Hawkens Carbine percussion rifle. It has a 1 in 24" twist that handles these sabots perfectly. Nice Flintlock. I am still trying to decide if I will get on also. It seems like it should be fun to shoot.
Here in Va. it is in the midthirties and it is too cold for meto goshoot. Good thing I don't live by you guys!!!