I recently bought a mannlicher mod l with a 23 " barrel, it was grouping into 2" at 100 yards.
It has a predator 8 on it & i wanted to shorten the barrel down to 20" i found out about b&n on sd & contacted mike, we arranged a day for the work to be done & i took the rifle to him to cut,re-thread & re-crown. I have set it up with some hornady 58 grain v-max moly .243 ammo.it is now shooting 1" at 200 yds off the landrover bonnet very happy with the quality of the work & the result :-d