I believe the story goes this way. In the 50's and early 60's Bob Deitmeyer and Harley Bair were making the reloaders. Bob Deitmeyer developed the reloader and Harley Bair who owned a machine shop on North 48th Street Lincoln Ne. manufactured the reloaded for him. Hense the name DL360 or DL100 (Deitmeyer Loader). They sold them through Western Gun located at 4700 North 56th Street Lincoln NE. Harley Bair changed a few things and market them under the Bair name, (really didn't take off) as most wanted the Deitmeyer loader. They then changed the name to Pacific and sold a ton of the Pacific DL-105 loaders. Most reloader in that ere were a one stage loader until the developement of the DL360 which is the predisior of the 366. Hornady purchased the rights and marketed them under their name even with the Pacific name plate on them, still being manufactured in Lincoln Ne. Eventually they moved the operation to Grand Island NE. and eventually dropped the Pacific name. A lot of the hornady parts will work on all models of the Pacific and DL loaders. My Pacific DL-105 (purchased new in 1970) has made a lot of shells and still is going strong. Recently I purchased a used 366 off of Ebay and with a little WD40 and steel wool and a few new parts (powder and shot bushings and a 8 point starter as it had a 6 point) have it up and running making shells. I have not had any experience with other reloaders but I wouldn't even want to try any other. From comments posted on other threads you won't find a better company to work with. The service and friendly willingness to help you out has continued throughout the years as it was Bob Deitmeyer's desire to provide excellent customer satifaction.
Dale Z
Lincoln NE.