Are there any NR rifles\ sub guns that are chambered in 762x25?
IIRC, the CZ52 pistol was designed to shoot the hot SMG ammo. I have one and have shot some of the stuff that came in stripper clips. There was a bit of a panic a while back that the stripper clipped ammo was a bit too hot for TT33's. Not sure what came of that.
That's a myth that Czech surplus 7.62x25 is hot, it is and very similar to Soviet military surplus. One commercial brand is hotter, S&B if I'm not mistaken.
Czech BXN marked stuff is hotter than any other comblock x25 ammo. And definitely hotter than soviet ammo. Generally 1750 fps for BXN vs soviet 1400 fps. This is well known fact. This was done because czech army were forced to adopt x25 caliber and due to this their firearms were designed for hotter load to function reliably.
So no myth there its just plain truth.
The Czech m48 ammo will Chrony out of my pistol in the high 1400fps to low 1500fps range. It is SLOWER than new S&B commercial 7.62x25mm ammo that guys shoot to be "easy" on their prized pistol.
I have found higher velocity in Hirtenberger and Bulgarian 7.62x25mm than the M48 round. Not all lots, but for sure in some
A few years ago I shot some Czech 3 52 BXN ammo through a VZ24 SMG and a CZ52 pistol.
The ammo averaged 1836 fps from the SMG and 1573 fps out of the pistol.
As for CZ52 - design known to be less robust than TT-33.
Many times it was mentioned on reloaders and collectors forums, that there's no such thing as "hot SMG czhech 7.62x25", that S&B is more powerful, and that CZ52 is prone to break (especially with S&B).



























