Been obsessing over Type Bs for a long time. I’ve decided to admit I’ll never own one (any time soon at least). So I’m Going to attempt to build a look a like. I’m starting with a 1937 Portuguese contract receiver (oberndorf marked). I’ll not be D&Ting it for a scope but may D&T the rear ring for a receiver sight, not 100% on that though...

I’m Having Cameron Hatcher copy a Type A stock but leave me enough meat to form a forend schnabel (he doesn’t have a type B and as far as I can tell this is the main difference?). I’ll post more details as I go but my first point I need help with is the barrel profile. Grant Swan (of Allan Swan Barrels) is making me the 28” 7x57 barrel in 1:9 and throating it deep for a 175gr RN seated out to use up the 98 magazine space. However he’s waiting on me to provide barrel contour dimensions. He could use a Lother Walther Type E profile but as far as I know this is more of a type A profile, and i’d prefer to keep it more Type B. From what I can tell (google picture mostly) type Bs predominantly had a military style Knox, followed by a step, then the rear sight sleeve. Was the sight sleeve combined with a second step, or was the sleeve the step? I guess in a pinch I could have a second step and solder a NECG sight base on... some Type Bs seem to have a more modern style Knox and step less profile though, what was behind the difference?

Anyway my most pressing question is - is there anywhere I couldn’t find an original Type B 28” barrel profile? Or would someone’s who has one be able to measure the key dimensions? I would very much appreciate any help!