While researching my Britannia video, which also covers some of the history of early bell target, I found a record that said in the National Air rifle championships of 1908, out of 940 competitors 936 used a Lincoln Jeffries BSA underlver.
https://youtu.be/hVYnb4fDzU4
I think BSA had the market pretty much tied up.

Still prefer my Britannia though.

Matt