TOZ 78 Jammed - SOLVED

I

island

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Hi All:

I was shooting my Toz 78 today, fired perhaps 100 rounds, took my next shot, went to operate the bolt to chamber the next round - and the bolt handle wouldn't move. I made safe as best I could, then tried everything I could think of at the range. Nothing helped, so I've brought it home again.

I had fired the shot, so there was an empty cartridge in the chamber, but the bolt handle will only raise about 1/2 inch, then seems to "stop" against something. Can't see anything visibly wrong, and I don't want to apply more force than I have. The bolt does not appear to rotate at all when I lift the handle the 1/2 inch it will move. The silver "stud" at the rear end of the bolt is "in".

Any ideas?

Here's what the action looks like at the moment, in case it helps:

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It sounds like the bolt is locked, like when the safety is on but your safety is definately not on in the photo? Try wiggling your safety switch, and tapping the receiver maybe what ever locks the bolt when the safety is on has slipped and is locking when it should not be. I had a minor problem with my TOZ 78 but was able to solve the issue on my own. I tried calling Armurus about it but I don't think they ever understood the issue I had and in the end they lost patience with my attempts to communicate my problem and told me flat out " Too much talk for cheap rifle". Like I said it was a minor problem I was just looking for some advice but to their credit they were willing to deal with it if I sent the rifle back to them. I didn't think it was worth spending the cash on extra shipping though so I fixed it myself and it's been working well. I've read other posts saying they have lots of 78's in stock so I'm sure they can replace or repair your rifle for you.
Good luck! -C.D.
 
I'm speculating that the case split on the last shot, showering the internals with bits of brass. Do you remember any odd sounds? Was there any indication that things were getting stiffer, or did the bolt "go bad" on the last shot only?

Not sure if this can be done on a Toz. , but can you try cocking the piece manually? It might reset the internals and/or clear a bit of debris from a split .22 case.

Next, I'd try removing the scope, it might be bending something out of alignment (it really shouldn't... but you never know). Finally I'd try removing the barrelled action from the stock and have a look at the undersides of the trigger unit.
 
Thanks guys - I'm going to try a couple of those suggestions. No, there was no odd noise on the last shot, sounded just like normal - even hit the point of aim pretty good :) The bolt was moving very freely up until it wouldn't move at all.

Unfortunately, the second screw that holds the action in the stock is under the bolt, where you can't get at it until the bolt is removed, so I can't take the action out of the stock. I will fiddle with everything I can and see what happens!
 
Update: I got the thing apart finally, gentle but insistent tapping on the bolt handle loosened everything up. Nothing wrong with the cartridge, but I did find the bolts holding the trigger group to the action were slightly loose - this appears to have had the effect of jamming the bolt in the closed position, almost as if the safety were on.

After wiping the penetrating lube I sprayed everywhere up, it all appears to go back together properly. Won't have a chance to take it out to the range to make sure for a few days, but thanks to everyone with ideas and input, it looks like my favorite 22 is back in action!
 
Russian TOZ 22

Was wondering what ammo you are using?
I used to have a TOZ-17 and it did not like stingers at all. When stingers were fired in the chamber, upon inspection of the empty case there was a definite bulge in the case web area. And vipers as well as remington hornets worked fine, therefore, these became my hunting 22 ammo of choice in this rifle. This remained a mystery for a long time. What I now know is that at the time, russian firearms did not follow S.A.A.M.I. specs and stingers fell to the furthest side of 22 LR dimensions. It only became obvious in non-north american made 22 LR firearms......apparentely some 22 european handguns did not take well to CCI Stingers as well.
I am not sure if more recently made russian rifles still follow this manufacturing tolerance........
Is your chamber of match dimensions and if so perhaps hyper velocity ammo is a no-no? Due to the fact the longer than normal fired case
( quik-shot and stingers) could extend into the throat area and freeze the bolt into place?
Am I just whistling dixie? Can someone more qualified than myself add to these thoughts and ideas?
 
Hmm - I've checked the cases, and the Federal Bulk stuff I've been using doesn't seem to be bulging cases as far as I can tell. I'm pretty sure the loose bolts holding the trigger group on were the problem, as it acts almost like you've got the safety on.

I've never tried any of the hyper velocity stuff, just wal-mar dyna-points and federal bulk or federal game-shok.
 
I fired a couple of stingers in mine and it worked fine, but the bolt is a little harder to close, so i'd be inclined to believe the match chamber theory. So far I fired some of every type of 22lr ammo I could get my hands on, no hickups, no jams no split cases or hard extractions. Only had 2 or 3 FTF and all were clearly the ammo's fault (clear firing pin indentation, of the bad rounds, one didn't fire after about a half dozen hits to I chucked it, but the others fired on the 2nd or 3rd strike.
 
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