Fellas, I used to be all set with a Marlin Cowboy and an H&R barrel and a set of Lyman dies for this caliber, but no longer. I have ordered a new H&R Target Classic, however, and plan to resume casting and loading for this cartridge. While I am aware that the H&R and the Marlin have had some chamber dimension issues, I never had any problem with the Lyman dies and either of these guns, but have heard very good things about the new RCBS legacy die set in .38-55. Anyone have any thoughts, experience, advice?