M305S now a single shot with case jam!!!

I try not to offer advice on these rifles as much as I want to because even though I know enough to get by, and am trying to learn more about this platform, there are guys on here who have forgotten more about these rifles than I'll ever know. And we all appreciate the help we get from these people. I probably would have given up on this platform by now if it wasn't for all the help us noobs get here.
 
Thank you for your comments. A few things: the steel cases were lacquered & worked fine. All the stuck and forcibly extracted cases appear normal...no bulges, the feed into the chamber okay...the rifle cycles easily. The gas port & the gas system has never been touched or adjusted. The chamber appears fine..
The early SB78 cases worked fine. Looking inside one you can plainly see it's a berdan primer, hence the corrosive view. I could be wring but...
Still looking for a solution....
 
Both suggestions already were given with no response. I think you need to:

(a) check that the gas selector is turned on
(b) take the gas system apart make sure it isn't stuck or the gas port plugged

and go from there.
 
The stuck cases is rather weird...pretty curious to know what the problem is/was. If the gas port is unobstructed through all parts, the gas cylinder plug is screwed tight and cylinder is not loose...then dunno.
 
Not really, I shot before with the gas system off and had to put my foot on the handle to get the spent case out.

ALMAR said:
The stuck cases is rather weird...pretty curious to know what the problem is/was. If the gas port is unobstructed through all parts, the gas cylinder plug is screwed tight and cylinder is not loose...then dunno.
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Are you familiar with the " Tilt test " ? Remove op rod spring and see if everything is cycling back and forth correctly . Are you getting enough stiction on your piston so it drops down slowly ?
 
tiriaq said:
I do not know if 78 dated Czech ammunition is corrosive or not.
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Oh, now that's an angle I hadn't thought of. If, as you perceived, the OP statement that he was shooting "SB 78" means he was shooting Sellior & Bellot ammo made in 1978, then I would indeed expect the ammo to be corrosive.

However, if he means, as I perceived, that the brass is headstamped "SB 78", then that means he was shooting NATO spec cartridges made at the Santa Barbara arsenal in Spain, and I stand by my assertion that it is non-corrosive.
 
hatman1793 said:
Thank you for your comments. A few things: the steel cases were lacquered & worked fine. All the stuck and forcibly extracted cases appear normal...no bulges, the feed into the chamber okay...the rifle cycles easily. The gas port & the gas system has never been touched or adjusted. The chamber appears fine..
The early SB78 cases worked fine. Looking inside one you can plainly see it's a berdan primer, hence the corrosive view. I could be wring but...
Still looking for a solution....
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Curious. Earlier you stated that you stripped and cleaned the rifle twice. but you are stating that you never touched or adjusted the gas system?? Could you clarify?
 
45ACPKING said:
I think I'm gonna stop with the m14 advice on the internet.
There's Tony bens and tactical teachers for that, although I don't see them offer advice on these kinds of problems much.

Good luck, hope ya figure it out.
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Please don't stop! Guys like you, Barney, Tony, you guys are the ones who I've gotten a very large portion of my advice, tips, hints, tricks, etc, from. You guys are what inspired me to get really into the M14 pattern battle rifles. You guys inspired the "Damn these guns are so cool" and "what a marvel of engineering" type of thoughts.

Please dude, try to skim over the annoying crap! I know it is a real PITA sometimes, but please!

I feel I've learned a whole Heck of a lot, even made my own barrel vise and rebarreled my gun, with advice and tricks Deon you guys. But I'm certainly nowhere near as experienced as you all are. Guys like us need guys like you on this forum. We

Ok, I'm done now..... Lol. Sorry, I get a little emotional M14's.....
 
what I don't get is why some people run crap ammo through their expensive guns- or maybe not so expensive- but then again, I roll my own - always have- and steel casings with shellac is well documented- as far back as ww2 with german anti-tank guns- ie if you spend 500 or more on a gun why can't you spend 30 bucks for a box of 20 BRASS loaded?
I got my first m14 back in 75- a springfield- not an m1a - and a rcbs jr single station- used to take most of an hour to load for 1 magazine( back then mags were 20 rounds) and have never fired a steel case yet, nor do I intend to
the m14 et al can be a quirky platform and every rifle has it's own "problems- believe me, I know- I have 4 - some will feed 5 round mags, others insist on the full 20, they all take slightly different powder charges and some are jus downright cantankerous-and these are usgis , not 305s
 
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I swapped my Quadra Jet for a Holley 4150. The car would start and run fine before but now it won't even start. Whats the problem?

"It's got no gas"

"Oh I think the timing is out now."

"I think your valves need to be relashed."

"I think your muffler bearings need to be replaced."

"Can someone get me a can of current?"
 
t-star said:
what I don't get is why some people run crap ammo through their expensive guns- or maybe not so expensive- but then again, I roll my own - always have- and steel casings with shellac is well documented- as far back as ww2 with german anti-tank guns- ie if you spend 500 or more on a gun why can't you spend 30 bucks for a box of 20 BRASS loaded?
I got my first m14 back in 75- a springfield- not an m1a - and a rcbs jr single station- used to take most of an hour to load for 1 magazine( back then mags were 20 rounds) and have never fired a steel case yet, nor do I intend to
the m14 et al can be a quirky platform and every rifle has it's own "problems- believe me, I know- I have 4 - some will feed 5 round mags, others insist on the full 20, they all take slightly different powder charges and some are jus downright cantankerous-and these are usgis , not 305s
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Yeah and I got a TRW in 88. Used a single stage Lee 2001 press kit to load all my 7.62 win brass. Now I have 4.
Winchester
LRB
JRA
1988 SAI Super Match.

So I'm not as smart as you but I have been around these for a while. I agree on the ammo thing.
 
well since we're counting chickens, I also have 4- springfield,trw, h&r, and a really old first issue norc

when I was serving, there as an elderly sergeant by the name of smith( Schmidt, really) who used to man a pak 40 gun- he could tell u stories about those gddm steel shells- fire once, then have to manhandle the emplaced gun to the rear to extract the case- had to bang it out with a sledge and the cleaning rod- or swabber as he called it- claimed the lacquer was fusing the steel case to the sides of the chamber- not a fun experience when you're facing the business end of a sherman
 
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t-star said:
what I don't get is why some people run crap ammo through their expensive guns- or maybe not so expensive- and steel casings with shellac is well documented-
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OP was using brass as well as steel with same issue.


Some of us don't see the point in plinking with $2 bullets when $.50 are fine. I use surplus, steel or brass, that I find on sale for fun and volume shooting. When I do serious target or hunting I buy/use better ammo. Makes an afternoon of shooting a little more reasonable at $50 rather that $150+ per hundred rounds. Most boxes of 20 quality .308 rounds cost $30 to $60 each.

MR1 and SKS have never had an issue, yet, and the M305 is still being tweaked and tested. The only rifle I have that's ever had issue is the MVP 5.56. It loves the Barnaul but doesn't like the harder primers on the brass Chinese surplus. Sometimes a second try works but I usually just save these for the MR1. (Main reason I stopped shooting my 30-06 as a kid was the cost of ammo!)
 
Zen_Seeker said:
OP was using brass as well as steel with same issue.


Some of us don't see the point in plinking with $2 bullets when $.50 are fine. I use surplus, steel or brass, that I find on sale for fun and volume shooting. When I do serious target or hunting I buy/use better ammo. Makes an afternoon of shooting a little more reasonable at $50 rather that $150+ per hundred rounds. Most boxes of 20 quality .308 rounds cost $30 to $60 each.

MR1 and SKS have never had an issue, yet, and the M305 is still being tweaked and tested. The only rifle I have that's ever had issue is the MVP 5.56. It loves the Barnaul but doesn't like the harder primers on the brass Chinese surplus. Sometimes a second try works but I usually just save these for the MR1. (Main reason I stopped shooting my 30-06 as a kid was the cost of ammo!)
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I think the point of the ammo post was that you can hand load for a similar cost to cheap surplus ammo.

My hand loaded 308 ammo costs me about 27 cents per fmjbt bullet, 5 cents per primer, and 24 cents per powder charge. So my total cost for quality ammo is 56 cents, or so, after tax.

So I would tend to agree, if you can make great quality ammo for as cheap as the Norinco garbage, why not.

But some people can't. No room for reloading, no money for the tools, wife says no, whatever. It's also time consuming, and if you're just plinking at the gravel pit, and only care about being able to hit a steel gong at a hundred yards, then the crappy Norinco ammo does that just fine, and I don't believe it does any damage to the gun. Yes, laquer can build up, sure. Clean it. It's a gun. It needs to be cleaned on occasion. Easy peasy.
 
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Thanks for solving the mystery!
What caused it to seize? or did the piston just "cease"?? LOL.


yomomma said:
Ceased piston, easy fix.

The SB marked case with 3 star crimp and green primer sealant is Spanish Santa Barbra

Did some research on the S&B ammo. if it comes in blue boxes it is more than likely CORROSIVE.

(http://www.sportsmansguide.com/product/index/20-rds-308-winchester-147-gr-ammo?a=524682)

You need to strip down the gas cylinder and clean after every time you shoot.
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