Depending on your budget & uses, I would check these sites. Contact the firm or holster maker first for orders or available products.
www.usgalco.com www.lawmanleathergoods.com www.bianchi-intl.com www.blackhawk.com . Many like these brands too; Simply Rugged, Kramer Gun Leather, El Paso Saddlery, Tex Shoemaker.
Bianchi markets the top rated field holster; HuSH, designed by handgun hunting writer, Dick Metcalf. It works as a shoulder or belt holster, with or w/o scopes.
ClydeFrog