Readers will note that some of the introduction dates I list differ from Houchins. This is based on Hunter Arms catalogs, ads and especially dated promotional statements that appeared in Sporting Life.
http://www.la84foundation.org/SportsLibrary/SportingLife/1898/VOL_30_NO_23/SL3023023.pdf Feb. 26 1898 Our famous Crown Steel (introduced in 1893 for the Pigeon Gun) barrels will now be put on our No. 2, $80 list gun regularly, with an option on the Damascus if preferred. After years of use on our No. 3 guns, we can cheerfully say that our Crown Steel barrels are a decided success in every way. In addition to this very important change we now offer you an entirely new design in engraving on this grade. It is neat and in keeping with a gun of this description In regard to our No. 3 gun, $100 list, we come to you with something entirely new in gun barrels called Nitro steel. For months and months we have been testing these barrels to fully demonstrate to ourselves their qualities, and the result is most satisfactory. This Nitro steel comes the nearest to the Whitworth fluid steel of any gun barrel ever offered to the trade.