Disclaimer.......I is not a leather guru, I just blunder my way through. But here's how I did it.
I started with a block paper pattern and tinkered till it was a bout right, then put it onto card, made any adjustments and traced off onto the leather. I used veg tan leather (this one is a little thick, but I wanted to use it up). I scored the inside of each line to be folded and wet the leather to mold it round the gun, when it was almost dry, I unfolded bits then I used a leather fork to create the stitching holes, lined up the holes and stitched with waxed thread. I glued the front section with eco leather glue, once it was dry I used a damp sponge with eco flo water based leather dye and rubbed it in......It needs one more layer I reckon and some carnuba wax to seal it.


