Hi fellows,new here great site. I bought a used mk85 20"blued barrel 50cal walnut stock.It all takes the #11 caps.My question here is can you tell me what twist barrel it has and for those that have one of these what have you found to be the best sabot / bullet combo.I Like and have lots of pyro r.s. powder on hand and have 320 real bullets and370 t/c maxis and 430-240 and 300 grain x.t.p.and green hornaday sabots.This gun has a sieral number in the 297xx range if that helps.This gun also has the good williams ajustable open sites.Thanks for any help and have a great day.donnyb60.