Zastava Mauser

35 shooter

Well-Known Member
Thanks guys!! Yea, pretty excited for sure. It's a super accurate 3 shot hunting rifle right where it's at. It has a sporter weight bbl., but i think a bit more work on the free float will turn it into a 5 shot nail driver.
Looks like the Yugoslavians know how to hammer forge a good bbl.

I used 3 coats of BLL and had not one speck of lead in the bore and hardly any powder fowling to speak of. One dry patch and the bore looked like it had never been fired.

Btw, with the noe 315 clone bullet, it turned in a .653" group @ 100 yds. with 22 gr. of 4759 and a 1.226" with 42 gr. of aa4350....that load should be close to 2300 fps?

Ben was right about this bullet for sure....as usual!
Thanks Ben!
 

fiver

Well-Known Member
2150-2200 fps. with the 4350.
that's a middle of the road 300 savage load with a jacketed bullet.
 

35 shooter

Well-Known Member
Okay thanks fiver. I was just guessing by Larry G's loads with the xcb bullet in his 12 twist .308. That will be a fine hunting load if it holds up.
Four out of 7 loads were 1.2 or less @ 100 yds. today. Good indicator some of those will hold up.
 

35 shooter

Well-Known Member
Forgot to say the day didn't start out so well. I drove 50 miles one way to a public shooting range that is deep in the woods on national forrest land.

Someone had burned all the wooden shooting benches down to the ground.
It was all cooled down and no smoke anywhere. Looks like it was done in the wee morning hours on sat. night.

No one was there and there were no construction or closed signs...i believe it was arson, but don't know for sure yet.
I didn't have my portable shooting bench with me, so had to come back home and look for a place to shoot today.
 

fiver

Well-Known Member
it'll do fine.
I'd bet he used a tuft of Dacron to help settle the load down.
that was one of the loads I worked on with him for the XCB rifles.
 

35 shooter

Well-Known Member
WOWIE! Bet that's got you excited! Good shooting! Glad all your hard work is paying off!
Lol, "hard work"? I've been reading all this 30 cal. stuff you guys have been posting for 3 years now here and that other site.

Pretty easy since i'm just standing on all your shoulders and just taking in all the advice and experience.
Of course the original wood stock did hold me up for awhile...should have fixed that months ago.
All the good advice you guys gave about the feed problem made that go easily too.

I can tell the mauser action is already smoothing up a bit with just the little use it's seen so far.
Your right... i'm excited...first mauser for me. I'm like a kid with his first BB gun.

Thanks for all your help and support.
 

35 shooter

Well-Known Member
Think i'll try 21 and 22 gr. of 4759 again, along with 21.5 gr.
41 and 42 gr. of aa4350 shot so close in group size i'll try them again too, along with 41.5 gr. and a couple of hotter aa4350 loads.

Can't wait for another range trip with this one!
 

35 shooter

Well-Known Member
Spent the last hour and a half fileing out the left side of the forend channel.
That "should" take care of the 4th shot outlier as the bbl. heats up. Wish i had a heavier small rasp, that Ramline stock is pretty tough...should be a good thing though.

My 6x leupy is set in warne qd rings on this rifle and i ordered another set of warnes this week for my old 10x leupy so i can switch back and forth between them for load work and hunting.

This rifle is equipped with iron sights, so a good reciever sight will complete the dream of a super versatile package for all occasions.
Range trip tommorrow!
 

35 shooter

Well-Known Member
Fileing out the left side of the forend a bit more did eliminate the bbl. heating up and kicking the 4th shot to the right.
Lol it did'nt keep the wind from catching me on the same 4th shot a couple of times though.
Oh well, it was tough conditions today, 15 to about 20m mph angling crosswinds and switching from left to right almost constantly.
I did'nt drive 50 miles one way just to turn around and go home though.
Just did the best i could doping the swirling winds....i know you western guys have to deal with that more often than i do.
I think it actually turned out pretty good considering.

Changing the stock definitely changed the harmonmics on some of the 4759 loads and i got 4 and 5" vertical strings on 21 and 21.5 gr., but 22 gr. shot well.
Also shot 43 and 44 gr. of aa4350 with the same vertical stringing. I did not re shoot 41 and 42 gr. from the other day. I'm hoping it does like the 4759 and comes in again a bit higher up....that would be some serious speed i think.

First 3 shots with 22 gr. 4759 went into .911" and the wind caught the fourth(called) shot and openend it up to 1.682". Too hard headed to get off the trigger with a good group going.
 

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35 shooter

Well-Known Member
Also shot my 35 whelen with some near max loads of aa4350 and the noe 360230 fn bullet. That same wind caught the 4th shot (called) again.
Dang it...the first 3 were in .269" the 4th went a bit right for a 1.025"
This was 59 gr. of aa4350 and 60 is supposed to be max for a 250 gr. bullet.
It should be a rock solid 2300 fps., but haven't chronoed yet. 60 gr. is supposed to be somewhere around 2375 fps. if i remember accurate arms data right.
I tried 59 1/2 gr. , but it vertical strung about 3". I'll try 60 next time, but doubt if that will be enough to bring it back in.
Pretty happy at 59 gr.
 

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fiver

Well-Known Member
that is about 250 fps of vertical stringing. [4350 load]
drop the load back down to the 42 or so level and use a tuft of Dacron.
I seen the same stringing with H-322 and the filler tightened groups up as tight as the rifle could handle.
 

35 shooter

Well-Known Member
that is about 250 fps of vertical stringing. [4350 load]
drop the load back down to the 42 or so level and use a tuft of Dacron.
I seen the same stringing with H-322 and the filler tightened groups up as tight as the rifle could handle.

I probably should have tried that in the whelen as well with aa 4350 as it didn't shoot well at all untill just before compression at 59 gr.
60 is supposed to be compressed with a 250 gr. lyman bullet according to accurate arms data.

Definitely looking like aa4350 likes 100% and plus case fill if not using a filler.
I don't mind that in the whelen as i was trying to beat my imr4350 load at 2200 fps.

I'll try some with the filler in the .308. starting at 42 gr. and give it a go...Thanks Fiver.
Heck, i need to start over with it anyway since i changed things on the stock.
A filler would tighten up those lower 4759 loads as well (or it did in the whelen with 4759), but if it holds up well with 22 gr. and no filler i'll be happy.
 

fiver

Well-Known Member
I usually avoid fillers too but when I see the potential of a load but with the vertical like that I give it a try before moving on to another powder.
the holes are too up and down but show the potential of what would happen if they weren't.
you'd still have the flyer...:p but the potential for great is there.
 

35 shooter

Well-Known Member
fiver, if your going by the first target, those were 4759 loads of 21 and 21.5 spread across the middle. I turned that target 3 times and the top group was the 22 gr. load. I think there was 2 in the white and 2 in the black vertical on each of those other 2 loads.

The aa 4350 loads were on another target, but also vertical, though not as bad as the 4759. Just making sure you didn't think the ones showing were the aa loads.
They were in line within about 1/2" wide and about 3 to 4" vertical.

Those 2 4759 loads were worse at about 4 to 5" vertical. I think all those loads would benefit from a filler for sure.

The top group on each target was the best i did today with the .308 and the whelen too. I shot 4 shot groups with everything just looking for the accuracy nodes.

I think your right and the potential is there with the filler...we'll see eventually.
 

fiver

Well-Known Member
3-4" vertical is more like 150 fps, the filler is still a good idea.

me and Littlegirl done a pretty good test [OMG about 10 years ago I think Dawn was about 14 at the time]
where we used 3 different barrel lengths and the same cartridge. [7.65 Argie]
we used the same loads [H-322] and worked a ladder up, then shot everything on the same day. [over the chrono-graph]
you could clearly see the vertical stringing on target and on the screen.
so we switched primers and tilted the barrel and shot them again, which gave us pretty much the same results.
then we matched those loads with a filler and re-shot the tests and immediately the velocity variations went away as did the stringing.
Littlegirl done the whole write-up over on the boolits site.
anyway the point is if you got a chrono and see some vertical stringing just putting 3-4 of them over it will quickly tell you if it's a velocity variation or barrel harmonic timing.
 

Pistolero

Well-Known Member
For what it's worth, RE the feeding from the mag issues:

I have a pair of Chilean 1912/61 (IIRC) Mauser 98s which have been factory converted
to 7.62 NATO, reportedly with cut down surplus '03 Springfield barrels. Both feed fine
from the magazine, no probs. They were originally 7x57 and the "/61" is the conversion
in 1961 to 7.62 NATO. One is a four groove and one is a six groove barrel, makes me
think of High Standard's six groove '03 bbls and the normal pre-03A3 four groove barrels.

The six groove is a particularly good shooter, with ordinary Portugese surplus ammo it will
reliably put 5 shots into a group you can cover with your hand at 200 yds, 100% stock, with
all the ineffectiveness of the sights and stock triggers that this implies.

Bill