I don't know of any forums on "transitional" target rifles John; which is a shame really, although it's my main interest converted target rifles don't generate much interest on the forums, or even in my club!
Thinking about it I reckon it's more of a Commonwealth thing, whilst we shoot the Palma matches with America the commonwealth games are very much Canada, Australia
, New Zealand, Kenya and the Caribean countries so why would Americans have much interest in something they don't take part in?
Tell me more about Knott, who when and what did he/they produce please?