Twist is approx. 1 in 48 - A 150gr load would be about 90 ft/lbs recoil - 200gr load would be 125 ft/lbs recoil. I'll try and work up to see if its tolerable.

UPDATE.....

I went to the range to test my newly acquired muzzle loader. I have reaffirmed my dislike of muzzle loaders. When I go to the range with a cartridge rifle, all I bring is the rifle and a box of ammo. When I finish shooting, I go home. Not the case with a muzzle loader. Look at the picture of all the crap I had to bring. And, after shooting for only 20 minutes, I had to spent the next hour cleaning everything. Below is the target showing the results.
I am not sure if the results is good or not, so comments are welcome. (also, the repaired wedge did fine)

http://www.buckstix.com/buckpics/bp8-2.jpg

[Linked Image from buckstix.com]

http://www.buckstix.com/buckpics/HOLLIS-TARG.jpg

[Linked Image from buckstix.com]

How to Hunt Wisconsin Whitetail Deer with a Cannon