I wasn't asked, but never one to miss an opportunity to rant
MWT typically starts about 2/3 down the barrel, and extends to where the choke constriction begins, where pressures are about 10% of breech pressure (very close to eyes and other important body parts)
Simply reporting MWT, as most dealers do,
is in no way adequate. If the dealer runs a gauge down the barrels, why not at least report end-of-chamber and 9"??