jbar174
He said it was one of the original older guns
It really could be that he does have one of the older Knight Super DISC's, especially if it requires the ORANGE Disc, and if that is the case it might be a 1/20 twist rate and as I remember they were noted to overstablize a normal length .357 or .40 bullet. It may give him some grey hairs looking for the accuracy that he wants. That is the main reason that Knight switched to the 1/30 twist in the 45 cal.