I have a Niedner Hornet on a small rolling block action. When I got it years ago it had the front end of a Hornet case stuck in the chamber. No matter what load I tried the case broke in two just in front of the web leaving most of the case stuck in the chamber. Since Niedner was sporadic in marking calibers I just assumed it was a Hornet. Reaming to K hornet solved the case breaking issue. With the knowledge gained from this forum I now know it might have been an R2 maybe???????????????

gbehrman