A mixture cap or pressure limit would be my preferred change.
Or, to be sneaky, saying that it has to fire an actual potato slug at X range (say about 10m). Excessive firing forces will cause disintegration long before impact.
I think I will take a crack at the other category. Main issue is keeping motivated without anyone to discuss with






 maybe have a crack at semi-auto....
 maybe have a crack at semi-auto....






 and
  and   just because!
  just because!  








 been featured on this site already though iirc...
 been featured on this site already though iirc...
