Boss are building a 22hornet double rifle for me. They have agreed to add a set of 410 barrels. My thought was can we paradox, rifle choke or fauneta the barrels. I only want the traditional British gun trade style. I do own a 28 bore paradox and this got me wondering about the 410. I think if we can’t find a British example I will not move forward with the idea. Bwanabob I agree with your statement on R&D costs. My problem is time. It is a 10 year exercise and I don’t have the 10 years spare.