Grey colored Czech ammo dates?

[Steiner]

So my 1959 dated cases have had the ammo where the case and bullet is grey. It's worked well. I have another two sealed cases dated 08/60 and 08/61. Just wondering if these production years are also full grey product? I'm curious if anyone knows the end date (if there was) on the ammo that was all grey.

So far any '68 and '71 dated cases I have seen have had the conventional green case and copper washed bullet.

 

[CanAm]

We have had in in many dates. 73 was very common.

 

[mikerock]

As I understand the all grey rounds are steel core.

 

[Stevo]

All the Czech M43 is steel core.

 

[mikerock]

Sorry steve, that is incorrect. Only the grey steel cased ammo is steel core. My friend pulled a bunch of bullets and cut them to see what teh grey ones are made of and they're all steel. The copper jacketed rounds are lead core which can be seen if you pull the bullet and look at its base. The lead is plainly visible.

At a loss at the moment to explain why some is steel and some lead, but the more logical theories are cost saving and pre-tooling for AP rounds.

 

[CanAm]

They are all steel core. Steel core is not AP BTW.

 

[Daehanminkuk]

They are all steel core. Steel core is not AP BTW.

run a magnet over the ammo.. M43 is mild steel core with a lead tail.
AP has got a Tungsten carbide core.

 

[CanAm]

run a magnet over the ammo.. M43 is mild steel core with a lead tail.
AP has got a Tungsten carbide core.

Correct, as I said.

 

[Steiner]

All the Czech ammo I've shot has been great. I was just curious.