I did a little research before building my Hawken and 36" was maybe a standard lenght for them, but by no means can you say that there was a specific lenght, or one set stock architecture---if you look at Baird's book, there were many variations and different lenghts of barrel---and they were heavy. I built mine with a 36" Ed Rayl barrel and it holds great and shoots better than I can hold it. I would not cut off a Bill Large barrel, as Bill knew what he was doing and did it right---his barrels all shoot terrific (at least all the ones that I have seen shot).