Improving the boy's Zastava M85 7.62x39

jbmauser

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Last winter my son turned 12 and I presented him with his first hunting rifle, a Zastava M85 in 7.62x39. He was on the fence about hunting so I didn't want to spend too much on a rifle then have to resell it due to lack of interest so when I found a shop still listing them at the old price of 499 I grabbed one. I had of course done a fair bit of research on them and knew what I was getting into as far as possible issues but for 525 shipped to my door I wasn't expecting a whole lot.

As typical for these the metal finish was pretty darn good. Nice bluing and polishing on the barrel, receiver, trigger guard, etc. The bolt is a little crudely finished and was pretty rough at first but has since smoothed out considerably. It doesn't bind or anything so good enough.

Some of the issues I noticed right off the start weren't too serious and didn't affect usage so I loaded up a bunch of reduced loads for practice and 50 max loads (worked up to of course) using 150gr Sierra's for hunting. Any way after shooting about 200 rounds of reduced loads, 40 of the hunting rounds and harvesting his first buck it was time to do some repairs and improvements.

The trigger was pretty bad right out of the box and I adjusted it immediately but the other issues I let slide for a while were the horrible inletting and a poorly functioning ejector. I have examined several Zastava center fire rifles with wood stocks and the poor inletting around the front of the action is a common theme. It was so poorly fit that after the couple hundred low recoil rounds and less than 50 full power rounds, the wood behind the recoil lug was completely broken off and was just a large chunk of wood floating around in the stock. Rather than trying to glue the wood back in place, I just removed it, drilled some holes in the stock to provide a good mechanical lock and reinforcement and filled the entire area with Acraglass. I bedded the action and first 2" of barrel then free floated the rest of the barrel.

The ejector was an easy fix. It was a simple matter of the hole in the stock for the ejector box screw not being aligned properly causing the screw to apply upward pressure on the ejector box and blade assy. This caused the blade to bind in the receiver slot. A few seconds with a drill bit to elongate the hole resulted in snappy reliable ejection every time.

A set of Talley Lightweight rings to replace the cheapo ones I installed originally and we were off to the range to test the results. Accuracy with the 150gr Sierra loads before the bedding and free floating ranged in the 3-4" mark with no groupings going under 3". My son fired off 5 rounds of the reduced recoil rounds for practice and then I shot a 3 round group with the Sierra loaded ammo. Below is the result:
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I know one 3 round group isn't concrete evidence it's going to shoot like this all the time but it never even came close to this kind of accuracy before so I was pretty happy with the results. We will be doing a lot more shooting in anticipation of spring bear season and I plan on working up a load using some 130gr Woodleigh's so we'll see how it does over time but I'm pretty confident it will shoot consistently better than before. Overall the rifle is a pretty decent little hunting rig if you're willing to do some fine tuning.
 
My stock recoil lug let go as well so you are not alone. I used glue and 4 headless screws to put it back in place and also bedded it. Not like anyone is making replacement stocks for these so you kind of have to go full bubba lol. Can't see any of the crack/screws as I cleaned it up a bit. Holding for now...
My extractor also was crappy, leaving many spent casings in the chamber that I would bring a cleaning rod with me to the range to push them out. This was with factory brass cased S&B and PRVI...yanked the extractor and gave it a bend...seems OK for now. Sako Vixen extractors seem to be an easy fit if you can find one.
Rear base holes were drilled off center pretty bad, good thing it has irons...no way I was going to spend $$ getting that sorted by the Smith. Plus it's too rough, with a teeny wee bolt, not much I can say good about the example I got here.
And these were $375 to the door, new.
I'd dump this one in a second but would feel way too bad for the new owner...lol.
 
Nice job. You shooting .308 or .310 bullets through it?

Mine shoots 308 pills better, 125gr SST specifically, will put 3 or 4 almost touching at 100 with the irons but then it's south if the barrel gets too warm.
I have a pair of M70's, and one Z5 in 22mag. The rimfire is actually really smooth operating, but will only feed 3 rounds. The M70's are not the smoothest '98 I've come across, but they are not the worst. All seem to have QC issues but shoot well enough.
I still don't know if I NEED a bolt 7.62x39...it's kind of nice, but I have SKS rifles already. I may get a Howa Mini at some point, never been surprised by those rifles(Howa/Vanguard), just well built accurate and smooth with great triggers.
 
They aren't known for their fine inletting as has been mentioned. The time and money spent bedding it would rectify that, but not doing it doesn't seem to prevent them from shooting well.
 
They aren't known for their fine inletting as has been mentioned. The time and money spent bedding it would rectify that, but not doing it doesn't seem to prevent them from shooting well.

I hope I gave you the good one of the 2 I had... mine's been a pain lol
 
I have a 7.62x39 Remington 799 which is an M85 barreled action in a Remington laminate stock. The extractor eventually broke but discovered that a Sako Vixen uses the same extractor and was fairly easy to fit a new one with a bit of filing. Works just fine now and got a spare just in case.

LOP was a bit short and with the hard plastic butt plate the rifle had an annoying tendency to slip around when shouldered. I fitted a Pachmayr pad to replace the plastic butt plate and solved both issues.

No issues with the inletting. Remington done good with that.

This rifle gets lots of use. Great for off hand practice with inexpensive milsurp ammo. Capable of fine accuracy with the right handload.

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7.62x39 Remington 799 with Weaver V3 1-3x20mm
 
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JB, I have a couple of insetted semi finished stocks for the Sake A1. The m85 is I believe a copy of this action. PM if interested.
 
My stock recoil lug let go as well so you are not alone. I used glue and 4 headless screws to put it back in place and also bedded it. Not like anyone is making replacement stocks for these so you kind of have to go full bubba lol. Can't see any of the crack/screws as I cleaned it up a bit. Holding for now...
My extractor also was crappy, leaving many spent casings in the chamber that I would bring a cleaning rod with me to the range to push them out. This was with factory brass cased S&B and PRVI...yanked the extractor and gave it a bend...seems OK for now. Sako Vixen extractors seem to be an easy fit if you can find one.
Rear base holes were drilled off center pretty bad, good thing it has irons...no way I was going to spend $$ getting that sorted by the Smith. Plus it's too rough, with a teeny wee bolt, not much I can say good about the example I got here.
And these were $375 to the door, new.
I'd dump this one in a second but would feel way too bad for the new owner...lol.

Sounds like a nightmare. So I’m guessing the few in the EE for 550$ aren’t good deals? Where was the 375 to the door price?
 
Assuming handloads, 1 MOA should be possible from just about any bolt action these days. For powders IMR 4198,H4198 ,RE#7 + Win 748 are all great. I believe AA 6180 was designed for the 7.62x39 . I use .310 123SP's on deer and get good results with .311 Sierra 150gr SP as well.All out of a CZ527 carbine.
 
Sounds like a nightmare. So I’m guessing the few in the EE for 550$ aren’t good deals? Where was the 375 to the door price?

I don't think these rifles are a nightmare by any means. Some do have issues but if you have a bit of skill and am willing to tinker a bit they can be great for the money. Last week he used it to take his first bear. A smaller boar but it didn't go far and he was super happy.

They are made with old school manufacturing techniques so they aren't perfect but they have a lot of high quality features and the metal finish is pretty decent.
 
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