That 100 yard group is pretty amazing consider three different bullets were used. 8 shots into what, about 2.5"? And that's using those puny plastic things.

Meant to add that I think you will like the #11 system better (with the cap bolt installed). Still gets pretty cruddy in the action but it hasn'tstopped my shooting sessions. If you use the 11s with the primer bolt -it might do so pretty quickly.

Now just try it with some of the big boolits for which it was really designed.