Hi [pilgram
As Der Ami stated "cerrosafe" chambercast best. Marked case helps if you have something close in dim. to chamber. If you do not have factory 9.3x72R loaded case and you are a muzzleloader/ reloader check the start of rifling by tapping soft round lead ball approx. .375 dia into chamber with wooden dowel. Mark the dowel when ball engages rifling Then tap back out with dowel from muzzle. Measure dowel and lead ball which gives you dim. from case rim to rifling. Bullet dia. in loaded shell should just be short of rifling. A 3/8 hardwood dowel tappered at end will also give approx. dim's. 9.3x72R dim's taken from factory RWS shell: bullet dia. .366, .384 at neck, .426 at rim., 2.827 long case. Don't let brush on drill engage rifling. After clean-up if you have oversize chamber, you may have to fireform and only neck size.
I think chamber dim's are almost unlimited. Fireforming and neck sizing best. You need to check bore dim's also before reloading or shooting factory. I have 8.6 that turned out to be 8.6x72R (.348 dia hornady bullet worked on deer).
wknito
