M305 Owners - Could you please share your experiences with slam firing and doubling?

I never experienced it, with factory, fl sized reloads, or surplus. It basically should not happen in these guns if the receiver bridge is in spec, it stops the forward movement of the firing pin as the bolt slams the cartridge into the chamber.
 
If you load from the mag you should be good to go

Have heard of problems with Fed primers
Have heard of problems of loading one in the chamber and letting it slam home
 
My nork slam fired once .Sat down on my picnic table ,put a mag in released the bolt and the rifle fired.Thank god it was pointed down range and there was no damage to the rifle or me.It was federal factory ammo and the primer was pierced on the empty case. I put a usgi bolt with usgi guts in it and never had another issue...don't know exactly what caused it, my guess was maybe an out of spec firing pin
 
Had a guy next to me whose m305 was doubling frequently. The trigger assembly looked fine and it passed the trigger follow test.

It seemed to be a technique issue in the way he was holding the benched rifle (he is a right forced to shoot lefty due to physical issues) and the fact that he was not following through on his trigger pulls.

He changed his technique and did not experience further doubling for the balance of the range session.
 
A loose hold on the trigger hand can cause "doubling"
So can many other issues like
Crud in the bolt jamming up the firing pin
Out of spec or damaged safety bridge
Broken or improperly fitted trigger parts
Poor stock fit
And the list goes on.
The same goes for slam fires

If your rifle is doing either, and it's not the way you are holding it causing the problem.... It is unsafe and needs a full inspection/correction
Other causes could be ammunition related, such as high or soft primers.
However, if. You are using a quality factory load, these occurrences seem to be very rare
 
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45ACPKING

Are you familiar with using the second segment of your finger, as opposed to the pad of your finger, to pull the trigger? I've used this technique on heavier C7/AR15 triggers in order to gain more leverage and pull the trigger back to the point where it is just about to release. In your opinion, could this technique cause doubling (or triples) in an M305?
 
"...slam firing and doubling..." The former is caused by improperly loaded ammo. Usually high primers. It has nothing whatever to do with the rifle. Highly unlikely to happen with factory ammo.
The latter has several causes. A worn or broken sear, sometimes a broken firing pin and, occasionally, the safety coming loose on some rifles(happened with a C1A1, one time, on my range. Senior cadet had one double and jam when the safety worked itself loose. Asked him why he did that. Not often if at all with an M305.) Also loosely holding an M305/M1A can cause you to pull the trigger twice under recoil. It's called failing to follow through. Really means you let the trigger go too soon after the shot and, under recoil, pulled the trigger again. Operator failure.
 
A "limp wristed" hold on the trigger hand is the best way to get your m14 to "bump fire"
A lot of guys experience this and think the rifle malfunctioned.
A firm grip is recommended
This wouldn't explain a slam fire however
If your rifle is slam firing , there is a problem and potentially a serious one.

Remove bolt and shake it, firing pin should rattle freely
Inspect safety bridge and firing pin tang
Reassemble and verify in stock safety checks and verify there is no hammer follow
A failure of on or all of the above, WILL absolutely cause a slam fire or out of battery detonation.
IF it passes the above, ammo should be looked at as the potential culprit
 
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I've used loads that I probably shouldn't have, and Fed directly into the chamber before I knew that it wasn't considered cosher.
Not a problem other than a lost extractor that I'm now sure is due more to my ignorance than anything else.
Ivor
 
sunray said:
"...slam firing and doubling..." The former is caused by improperly loaded ammo. Usually high primers. It has nothing whatever to do with the rifle. Highly unlikely to happen with factory ammo.
The latter has several causes. A worn or broken sear, sometimes a broken firing pin and, occasionally, the safety coming loose on some rifles(happened with a C1A1, one time, on my range. Senior cadet had one double and jam when the safety worked itself loose. Asked him why he did that. Not often if at all with an M305.) Also loosely holding an M305/M1A can cause you to pull the trigger twice under recoil. It's called failing to follow through. Really means you let the trigger go too soon after the shot and, under recoil, pulled the trigger again. Operator failure.
Click to expand...

STOP GIVING UNSAFE "ADVICE"!

To say that a slam fire "has nothing whatever to do with the rifle" isn't just missleading, it's FALSE and allowing an unsafe condition to continue.



To the OP, sometimes grease, fouling can cause the firing pin to rest in a "forward" position, allowing a slam fire to occur. This is more often seen on SKS's that have been heavily used, and not cleaned in the firing pin hole or pin itself. It can also happen with soft primers, meant for bolt-action hunting rifles and not military style semi-autos that often don't feature firing pin springs and meant to shoot military ball ammo that tends to have thicker primer cups to resist damage.

That said, I've not experienced slam fires or doubling myself. Well...ok, shooting the old 9mm SMG in the 1980's was nothing but slam-fires...but for that weapon it was behaving as designed!
 
45ACPKING said:
A loose hold on the trigger hand can cause "doubling"
So can many other issues like
Crud in the bolt jamming up the firing pin
Out of spec or damaged safety bridge
Broken or improperly fitted trigger parts
Poor stock fit
And the list goes on.
The same goes for slam fires

If your rifle is doing either, and it's not the way you are holding it causing the problem.... It is unsafe and needs a full inspection/correction
Other causes could be ammunition related, such as high or soft primers.
However, if. You are using a quality factory load, these occurrences seem to be very rare
Click to expand...
Don't forget about those soft primers too budz ;)
 
Mine has been solid too. No slam fires. Even made a totally stupid mistake of dropping the bolt on a live round in the chamber once, with no ill effects. Not something I ever plan to repeat anyway. But nice that I didn't shoot my #### off.
 
Look up my thread. I single loaded a round. It slam fired and blew the bolt up in my face. Case head seperation at the same time. It was definitely operator error.
 
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