You might want to check out the Bianchi Ranger Hush System holster. Its a nylon front carry bandolier style holster, it has many adjustments and can also be used as a belt holster. They are made in many sizes and made wider for pistols with scopes. I have two of them for my Super Redhawk 7.5" barrel w/ 30mm red dot scope and my 5.5 Target Buckmark also w/ red dot. I like them alot, they serve me well in the field.
I got mine from Optics Planet, I think they run around $80.