Easy with that cleaning rod
I read the Top Shots question from David Proctor (February, 2019) regarding his Model 2 Brno which all of a sudden lost accuracy and thought I’d add my two-bob’s worth as I had a similar problem with mine some years ago.
After trying a number of things to fix the problem, most of them listed in Paul Miller’s reply, I discovered that during an over-enthusiastic cleaning session I had pulled the cleaning rod and jag too violently back through the muzzle and damaged the rifling, not badly but enough to seriously effect accuracy. I had the muzzle re-crowned and problem solved. Subsequently, I’m more particular with my cleaning routine now.
Graham Pattie, via email
01 July 2019