13b20
I just got to the gunline in June from service battery, so my field firing time is a bit limited with these paladins.
I'm an M-109-A5 kinda guy myself. The most I've seen is a 548 catch on fire and someones hand not being faster than the breach.
As for the tube, we , it seems , punch the tube twice a week.
Top has a technique he has us use, bore brush + two green pads with a cup of breakfree down the tube, then
the usual in in out and so on. The bad thing is you have to dry punch like five times?
I guess , it does work well though?