This is a cat. So it does not really have standard specs, die settings, etc., unless you or I try to fix a set guideline. Now you do have dies that you can buy off the shelf, but that is marketing. I doubt that the setback of the shoulder will create a situation where the dies are unusable, could happen, but doubt it.
Actually, if the body is longer, the shoulder is easier to "bump" with the die, a process I do not subscribe to or endorse, by the way. You might not be able to size the base, but that should not be a problem. Neck sizing, only requires 1/2 the the diameter of the bullet in length. So you have over .100 before the shoulder is touched. A .100 setback of the shoulder in the chamber would be huge.
By the by, Eben Brown uses or used Bulberry barrels for many years. Actually since about a year after he bought the BF company from Bert Stringfellow. The first BFs were made with Douglas barrels. I have owned a few BFs. Eben is a bit fancier these days, since he moved out of his basement, he calls hisself E. Arthur Brown... More befitting a Yankee gunmaker from Minisotaaa, don't ya know
Ed