I can't load an extra round in my SBE II. I can see where some dremel work could change that, but if I can't get the birds in three shots, then I probably shouldn't get them.
The whole loading system works pretty well once you get used to it. The only time it has ever been a problem for me was last Saturday. I was at the base of a hill and a pheasant flew up at the top of the hill. I was carrying the gun with my left hand and as I raised the gun to draw a bead on the bird, I hooked the bolt handle on my vest, ejecting the shell. By the time I hit the shell-release button and racked a shell into the chamber, the bird was gun. This was sheer clumsiness on my part, and hopefully I won't pull a boneheaded move like that again.