That is the number to the custom shop. Just to be sure.
Factory tapered barrels are supposedly .725" for 24" with sights.
Tapered barrel .725" =factory 24"
Heavy barrel .850" =factory 26"
Straight bull .995" = oh yeah!
Custom shop uses different labels for different barrel profiles, ie; their tapered is the same as a factory heavy or vice versa, I recommend calling them as I'm not sure which way they go on that one.