For me there wasn't an underlying reason other than asctetics. Kirby may have, and I believe it was more of a bedding surface and usable barrel dia.(rigid) for him in suggesting it, but I didn't. Just asctetics for me was enough of a reason. He gave us alot of alternatives/suggestions when doing this project. They made sense so we did them, if it worked out that it also made the gun look better, we were all in. So as far as I know it wasnt a space for chamber issue.