Originally Posted by
Grouse45
The BK92 and the Mk85 have square receivers and are only 24 inches long. Both the BK92 and the MK85 have only 120grn max powder charge. The Bighorn has a round receiver and a 26 barrel allowing for 150grn capabilities. The Bighorn is also considered a magnum muzzleloader.
That is inaccurate, I have an MK85 I have an 8" pattern at 200yrds open sights with the only load I fire is 150grain powder Barnes Spitfire T-EZ 250G with musket cap. Every shot is 150grains as I was instructed was maximum powder capacity.