TT-33 Ammo problems.

[.223Rem]

I have 2 different types of surplus 7.52x25.
I don't know much about the ammo because I bought it off a CGNer. The ammo was packed 40 rounds in a box and all the boxes look the same but the ammo in side is different.

The problem is one type shoots like crap and the other seems fine. I was shooting at 25 yards, sitting down resting the gun on a railing so I was pretty solid. The first stuff shot as to be expected- big group, but at least on the paper. The second type was all over the place. In 16 rounds I had 5 in the snow 3 to 6 feet in front of the target and I think some above and beside the target frame. (paper was on a piece of plastic 2.5 X2.5 feet). So the rounds were going WAY off target. I know it's not the gun because I've shot new ammo at indoor ranges and never had a problem. I think it was key holeing because I found a slug stuck in the wood frame at a 45 degree angle from where I was shooting.

Has anyone ever noticed this big of a difference in ammo? maybe one type is just plain bad? Let me know what you think.

The first type seems to shoot fine. It looks like this:

The second (bad stuff) like this:

 

[pomelum]

C####h 1953 and 1952.
ive shoot the '53 type, at 25-30feet all shot (8) in the same hole 1"big, all touching.
didnt have time to test any other ammo, it was a lended gun at the range.


have you checked if the silver one is coated of is it straight iron?

 

[sunray]

There's no straight iron in any bullet jacket.
Key holing means the bullet hits sideways and is usually caused by undersized bullets. Measure 'em. Should be .310".

 

[.223Rem]

I thought the bullets might be undersize. I'll measure them at work, but it seemed fine by gently setting a round into the muzzle end of the gun.

 

[zywina]

Both are CZHEC ammo, the copper plate has a little more velocity then the cooper-nickle ammo I found, but I did not find the accuracy any real difference at any range up to 25yrds with my Polish Tok?
I find most people grip to low when shooting a Tok for the first time, as an example at any yardage past 13yards if I hold 6oclock all go into the black of a bullseye target,yet when my friends shoot it they hold centre and the bullets are nicking the bottom centre of the same target at the same range. My friends and I did a test this week to see that those who held the gun low shoot low, as for myself I grip the gun high and put them all in the black ? Weird but true!
Maybe your guns barrel is oversized a little more than my Poilish Tok, what condition is your gun and barrel?

Good luck Dale Z!

 

[Adamlxlx]

The tok is an inaccurate gun to start. Meant to shoot bodies not targets lol. It all seriousness though i have both those types of ammo. I am gonna comparr them next weekened and see if i get similar results.

 

[.223Rem]

I know it's not intended to be a tack driver of a gun, but I don't think it should be burying slugs in the ground lol.
My gun is one of those never issued Polish Toks. The gun and barrel are both in perfect shape.
Next time I shoot I'll watch my grip, but this is far from my first time shooting this gun. I was also alternating between one mag of good ammo and one mag of bad stuff in order to rule out mistakes I may have been making.
Tomorrow I'll bring a few rounds into work and measure them.

 

[pomelum]

The tok is an inaccurate gun to start. Meant to shoot bodies not targets lol. It all seriousness though i have both those types of ammo. I am gonna comparr them next weekened and see if i get similar results.

its the people that shoot them that are innacurate.
ive seen an old guy hit the bulleye at 600feet with a snubnose revolver, and another shoot a tokarev with the same result.

 

[.223Rem]

Well, I measured some rounds today and found both types are right around .307" +- about .0005"
However the silver bullets were out of round .003-.004.

I can only assume they were slightly off balance and thus not spinning properly.

 

[lejarretnoir]

I've found Czech Surplus and S&B Commercial bullets to mike .307".
IMO, all undersize for Tok barrels which usually run .311-.313 bores in about 6 barrels I've miked including Polish Toks.
Handloading for these should really tighten up accuracy with proper bullets. Slug your bore.

 

[gewehr76]

Each ammo lot will shoot differently in one particular firearm. 7.62mm is .300 on lands and .310 on grooves of any russian speck firearm. As for ammo its generally .308 diameter bullet that has flat open end so when fired, its swells to fill the grooves to .310 or what ever the groove is.
The ammo manufacturers were all using same techniques to make bullets so uniformity was the same.
G76