Yeah, theoben did change their breach blocks. very early ones were different - narrower as you said - maybe that was when they were using wobley barrels ?
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
Pete, I thought fitting a German barrel to you BSA would be against all that you held sacred! Don't do it!!
Plinkerer and Tinkerer
I shot a 35 once
With my TX200 from about 35 yards
Got a good group on the butt
Pete
I travel alone