16Bore - nice work. Have your dad setup for production while you do the business plan. Next thing is the rings start selling like gangbusters, you plan the IPO and go public and make money ala Bill Gates. Sell out to Warne, Talley or whomever pays your price. Take the money, share it with dad and enjoy life. Betcha didn't think the idea would work out like this...LOL. BTW - I'd like a pair myself for my 6.5 Swede Tikka. PM me with contact info. Homesteader.