The small ring BRNO 98 is very strong in both commercial and military form. A friend has a G33/40 actioned custom sporter that is on its second 257 Weatherby barrel. The said action has not been Rehardened. The small shank design leaves plenty of metal in the front ring. The Czech’s had the best hardening process of any of the pre-war mausers. There are soft ones out there, but they are few and far between, especially after the mid 30’s.