Sellier and Bellot brass

[denton]

All the S&B brass I have ever seen is Boxer primed. And I have had the same problem as you mention. Opening the hole up a few thou is easy enough to do.

Boxer primed cases have a single flash hole in the middle of the primer pocket, and can easily be reloaded.

Berdan primed cases have two flash holes on either side of the center of the pocket. They are almost impossible to reload.

The peculiar thing is, Berdan was an American, and his system is used primarily in Europe, and Boxer was a European, whose system is used primarily in the US.