I am thinking of building one also. Machining a knuckle would not be too difficult for this old retired machininst. As most have read my posts on stock duplicating, I have been on a project of building pattern stocks for rifles. I can duplicate rear stocks for a try gun, so if anyone gets to the point of building a try gun, maybe I can help out.
I recently received a book "Gunfitting" by Michael Yardley. Ordered it from Amazon. This book has photos of try guns and a chapter describing how to use the try gun. I highly recommend this book for anyone fitting shotguns!! Very well written, many photos, and even has chapters on fiting the rifle stock and managing recoil. Yardley is a gunfitter/stockmaker/shooting instructor in in Britain, so he is well learned in the London Tradition of fine gun fitting.
John, I would love to see photos of your try gun:
I have a true/professional try gun. It has an adjustable comb, adjustable butt both for length and pitch, also it is adjustable at the nuckle
Regards
John Boyd
