M305S now a single shot with case jam!!!
- Thread starter hatman1793
- Start date
hatman1793
CGN Ultra frequent flyer
Update: with some sage advice & hands on help from a fellow gun-nut user, "Yomomma" the problem was resolved. The single shot was due to the gas piston being jammed in its travel through the fitting. The piston was forcibly removed, cleaned, along with the housing and put back together. A big shoutout to Yomomma for his help.��
Update: with some sage advice & hands on help from a fellow gun-nut user, "Yomomma" the problem was resolved. The single shot was due to the gas piston being jammed in its travel through the fitting. The piston was forcibly removed, cleaned, along with the housing and put back together. A big shoutout to Yomomma for his help.
Just an interested bystander idly reading these posts (but with lots of experience with SLR gas piston actions going back to the FNC1A1) ... and I am delighted that you got this sorted out. Yomomma knows his stuff for sure!!
But I cant help looking at your original post which said :
"My M305S long barrel ran fine with the steel cased, non corrosive ammo. Got some military brass cased "SB 78" ammo and it shot fine, too, for a bit.
Believe that the SB78 is corrosive so two times ago, stripped the rifle down, cleaned the barrel with some Windex to neutralize the corrosive action, oiled & re-assembled it. FYI my only non-factory modification is installation of the Black Freather recoil spring guide road.
Next range outing the rifle turned into a single shot and the cases would not eject, but stuck and had to be forcibly removed. Again, stripped, cleaned and oiled the barrel for the next outing. In between, advice was offered that the chamber might be the problem. I suggested the gas port was plugged but advice claimed not. Copper wire brushed the chamber, and also used the hard nylon one that was in the cleaning kit.
Next range outing proved the same. Single shot only & the brass cases had to be forcibly removed.
What's going wrong? Some expert advice would be helpful...thanks..."
FWIW ... the advice offered that you had a chamber problem was correct based on your comment "had to be forcibly removed. Many SLR's can be fired with the gas completely turned of (eg the piston inoperative) and the spent casing can be very easily removed by the extractor when the action is opened manually. People knowledgeable about this action (and other similar actions) having read your word "forcibly" would quite naturally (and correctly) diagnose a bad chamber or bad ammunition. Had you said that the spent casing had to be manually ejected -- without the adverb "forcibly" .. most folks would have homed in on the gas piston pretty quickly.
