The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

Help needed in identifying the problem please, those who visit other forums, if you have heard of this before please point me in that direction.

Please no "you should not have bought a Hatsan" comments, not on this post.

The Gun is a good 4 years old, is of the old design and is a semi auto in 12 gauge. Designed as a Sec 1, not converted. (That is a knew stock not the original for this shotgun).

Over this weekend the gun has started slam firing. It is firing a second shot as soon as the bolt is back home, but so far only the one second shot - it has not gone full auto.
On one occasion it fired a second shot when I released the trigger from the fully pulled back position to normal position. This only happened the once.

It is not happening every time and not always on the first shot.

The gun has been apart and looked at by a group of very experienced Sec 1 semi auto shooters, but unfortunately they are not familiar with this gun.

There is no damage to the firing pin or the firing pin spring - nothing sticking out to contact the primer.
The trigger mechanism appears to be all correct but I can not help thinking that this may be where the problem is.

Any thoughts?

As a side topic, the loading gate on this model was always a bad design requiring a button to be de pressed for every shell loaded. The new Gate / trigger mech is a better design and dose not require this to be done, working more like a Remi 1100. Should anyone know if the knew assembly can be put in an old gun I would be interested.
I know both Chuck and myself contacted Hatsan when they first changed but I got no feed back and I don't think Chuck did either.



DM

PS - We were lucky to have few shooters on the range today and I was able to shoot without anyone else on the point. I was supervised at all times and safety was the name of the game. Once all obvious avenues were explored we called it a day.

Seriously...an experienced shotgun smith...sounds like trigger group.

Talk to Normanb on GT?

Baldie on here does a lot of PS and obviously knows his way around a firearm.

A strange one Dave, especially as it only fires one second shot, occasionally. As firing pin all in order and no protrusions, was the ammo OK? No high primers above the base? Presuming not.

It has to be something to do with the fire control unit. Perhaps, for what-ever-reason, the hammer is not resetting itself and following the bolt back to battery. Taking the trigger mech out of the gun and checking it manually may not replicate this.

Can you manually hold in the bolt release button, (you'll not like this bit!) dry fire the trigger and the manually pull the bolt back, keeping the bolt release depressed, so the bolt returns forward under it's own steam. Perhaps do this a number of times ( a lot) to make sure the hammer doesn't follow.

Also, inside the top receiver, are there any "strange marks" inside? Just thinking is the bolt travelling backwards straight? Any sort of tilt in the bolt when moving then not pushing the hammer all the way down to reset as it's not straight?

And for the record, I have a 20 bore Hatsan semi. It's outstanding! More reliable than my Remy ever was.....

Not to familiar with semi shotguns but could it be that the trigger sear is worn and allowing the firing pin to release when its not ment to?

Sub-Moa wrote:Not to familiar with semi shotguns but could it be that the trigger sear is worn and allowing the firing pin to release when its not ment to?

Wlcome to the forum, Sub-Moa ...do join in!

:)

Welcome to the forum Sub-Moa.

Hi Sub-MOA, tell us a bit about yourself, don't be shy.

Thanks guys, I am confident that it is the trigger mech, have sent an email to my RFD to contact Edgar Bro's to querie a price of a knew one - or possibly even a knew SG!

DM

Have you tried popping the entire trigger mechanism out for a thorough clean? I know mine gets a bit mucky back there after a while.