G/Day Jeff, I see the logic in your formula , there is of coarse the known unknown to take into account

Sights from NECG

Scope mount from Special Interest Arms

Here's a couple of examples of my Leatherwork. Top photo is an Armguard / Knife Sheath with a tooled Charging Bull Elephant. I made the Capping knife from a broken circular saw blade

2nd is a Back Quiver featuring native Australian leaves and flowers, some of my homemade self nocked arrows and one of my Selfbows. I made it from Brigalow

I don't have any phto's of the fancy lace on Butt stock cartridge holder I made to swap the rifle for. I must ask my mate to email me some photo's of it. My Leather tooling skills have improved from the 2 examples above. It's a mood thing though - I do sell leather goods from time to time and I must be in an arty mood to motivate to make them.

I using Pine Rivers Gunsmiths to assemble this Lithgow for me, Alan Murray is doing the Smith work. They have done the little Gunsmithing I've needed done since the mid 90's, mostly trigger jobs, scope mounts etc and I've been very happy with their work. I was also recommended to contact Alan by a Kiwi mate of his, Nelson from Status Guns who I first contacted for information about this calibre. At the time I did not know they new each other and had already pretty much made up my mind to speak to Pine Rivers Gun shop about this project.

regards Jacko