I have recently had an interesting AH rifle come into my collection . The action is an AH hammer gun dated to 1887 and the barrel group is made by Fraser and addressed as such on the rib . The serial number of the action is different than the barrel group , the barrels are fluid steel and nitro weight , chambered in 400/360 Fraser . The fit and finish of the barrels to the action is perfect . The rifling is not Henry rifling and shows signs of moderate use . It seems that this was a custom re-barreling of the old AH with "new" nitro barrels by Fraser in his favorite caliber . Does anyone have any shooting experience to share with such a combination ? I have some photos I could e-mail if needed . Thanks , Jim