the chamber cast was a little awkward working around the extractor but I think it came out ok.
case length: 2.19-2.20 or 55mm
case diam at base: .4250 or 10.79mm
case diam at start of slight shoulder: .390 or 9.92mm
case diam at end of slight shoulder: .355 or 9.02mm
case diam at mouth: .3395 or 8.62mm

chamber neck: looks to be .265 or 6.74mm
bullet grooves .3185 or 8.09mm
bullet lands .3095 or 7.86mm