Thanks everyone for the great replies, they are much appreciated.
Smahon03, I dye my leather with Fiebings Professional Oil dye. Then I whip-stitch the holster together, wet the leather and form it to the gun. Once this is dry I give it a good coat of Fiebings Tan-kote. After that is dry I use Fiebings Antique Finish. I wipe a good coat on and make sure it is in all the tool impressions and then immediately wipe it off with a paper towel and let this dry. Next I coat it again with Tan-kote and when dry I lace it up again and give it a third and final coat of Tan-kote. This gives the antique finish a good sealant and the holster good overall shine.
Hope this helps. Any other questions, I'll be glad to answer.