Hey just wondering if anyone else has had any issues with their m305 and Chinese ammo? I took mine out today and I loaded it, fired it, round ejected forcefully but a new round wasn't chambered, seems the rifle is functioning fine save for this issue and I tried 2 mags, any thoughts?
Issues with shorty m305 and Chinese ammo?
- Thread starter canukstik
- Start date
Rocket Surgery
CGN Ultra frequent flyer
sold by the same vendor
- Location
- Kitchener,Ontario
I have no problems with mine.The green box Norinco 7.62x51 in my 305 works great.
Big_red_truck
CGN frequent flyer
- Location
- Labrador , the big land
I guess it's a common problem. Take a look at this video. gas ports probably aren't lined up.
http://www.youtube.com/watch?v=Jcq1Fz1ljpY&feature=fvsr
http://www.youtube.com/watch?v=Jcq1Fz1ljpY&feature=fvsr
RememberTheSomme
CGN Ultra frequent flyer
- Location
- Nova Scotia
Failure to feed after a positive extraction can be many reasons. If your mag is fully seated, and you can fully retract the op rod handle and chamber a fresh round manually each time, usually means a short stroke if the bolt goes forward with no cartridge in front of it. This can be caused by ammo that is under powered or has a gas pulse cycle that is way out of spec for the auto loader in question due to charge weights or burn rates, outside autoloader requirements.
Having said that, the Norinco Green Box 7.62X51 I've tested in my 22" Rifle appears to duplicate M-80 ball spec exactly. How the Chinese produce this velocity match I'm not sure. If it meets NATO spec however, and I read alot of this was made for customers requesting NATO ball,... then it should be using powder burn rates and charge weights within the spec limit for all automatic gas systems that are designed around NATO ball ammo.
Where you have a shorty, ....sometimes there's less dwell time in the barrel to produce acceptable gas pressure to fully retract your rifles action fully to the rear, unlike that produced in a longer rifle barrel of 22".
Check to make sure your action is relatively smooth and not binding in anyway that would take energy away from the rearward travel all the way back, allowing the bolt to get behind and strip a fresh round from the magazine on it's way forward.
If the action is smooth and you get no obvious binding, then try a different ammo brand. If the rifle appears to be "Short Stroking " with that, you may need to enlarge your gas port in the barrel. Maybe the gas port may be obstructed slightly already, and with a shorter barrel, this may cause your problem.
Anyhow let us know if it fully retracts on it's own, or does it go forward on an empty chamber.
Having said that, the Norinco Green Box 7.62X51 I've tested in my 22" Rifle appears to duplicate M-80 ball spec exactly. How the Chinese produce this velocity match I'm not sure. If it meets NATO spec however, and I read alot of this was made for customers requesting NATO ball,... then it should be using powder burn rates and charge weights within the spec limit for all automatic gas systems that are designed around NATO ball ammo.
Where you have a shorty, ....sometimes there's less dwell time in the barrel to produce acceptable gas pressure to fully retract your rifles action fully to the rear, unlike that produced in a longer rifle barrel of 22".
Check to make sure your action is relatively smooth and not binding in anyway that would take energy away from the rearward travel all the way back, allowing the bolt to get behind and strip a fresh round from the magazine on it's way forward.
If the action is smooth and you get no obvious binding, then try a different ammo brand. If the rifle appears to be "Short Stroking " with that, you may need to enlarge your gas port in the barrel. Maybe the gas port may be obstructed slightly already, and with a shorter barrel, this may cause your problem.
Anyhow let us know if it fully retracts on it's own, or does it go forward on an empty chamber.
Pull the cylinder out and jab the back end of a drill bit through. M14.CA has the drawings for the rifle on their web site
If I read the prints right, .076
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Same thing with my 18.5", tried my reloads and no problem. Same thing on 2 other 18.5", always thought the Norc ammo was hot, guess not. Just took out my 308 Garand, same thing. I wasted quite a few rds on my 18.5" Sage before trying my reloads.
- Location
- Parksville Vancouver Island
OMG!
Really thatz why your sage was short stroking at the range that day???
Man I was puzzled about that for like ever touch157
