CZ 52 Rifle ammo %&$#%*!
Dave Bostock
I thought I'd solved by Czech rifle problems with the replacement of the
crumbling crosspin that holds the firing pin, I posted about it and a
recomendation not to dry fire. That solution just distracted me from
more carefull consideration of an ammo problem which has again rendered
my CZ 52 rifle useless in less than 50 rounds.
OBSERVATIONS
*brass case aym 52 headstamp, no primer crimp
normal fired primer appearance, no problem.
*steel case zv 61 headstamp, no primer crimp,
normal fired primer appearance, no problem.
*steel case zv 64 and zv 79 headstamps, 6 mark primer crimp,
from a full but unsealed tin purchased from Century, all 15 round boxes
same light green color, some were torn open with loose rounds inside of
shipping box. Normal fired appearance of these rounds is a
bright brass perfect circle around the primer dent but not concentric
to the firing pin dent or the outer edge of the primer. Unfired
apearance of these rounds is an all black primer in a green laquered
steel case.
THE PROBLEM-Some of my 64 and 79 cases show perfect circular holes in
the primer where that bright brass perfect cirle normaly appears. edges of
these holes are sharp right angles at the inside and outside surfaces of what
remains of the primer. The berdan anvil portion of these cases is plainly
visible thru these holes. Leakage of powder gases and fouling rushed
thru my bolt - around the firing pin, finally siezeing my firing pin in the
bolt and cooking the light spring that surrounds the firing pin inside
the bolt, powder dirt was visible on the hammer face from these primer
failures.
WHO ELSE HAS HAD THIS HAPPEN, WHAT WERE YOU ABLE TO DO ABOUT IT?
--
Dave Bostock dea...@dc.seflin.org South Florida, USA
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dave Bostock
Correction/update - All the faulty ammo headstamps were zv 64, faint
stamping, strange 4, laquer coating, bad light, and 45 yr old eyes
looking at 64 upside down looked like 79, I have edited my post below for
this correction. Century requested I return the ammo and they have
agreed to pay return shipping, it's expensive and troublesome for
me to return an item. If Century refunds rather than replaces this ammo
I'll have to find some without these troublesome primers, please e-mail
or post your experiences with any 7.62x45 ammo identifying the year, so
far summarized from the quoted post.
VZ 52 - brass case, no primer crimp, tan box - ok
VZ 61 - steel case, dark green laquer, no primer crimp, grey boxes - ok
VZ 64 - steel case, dark green laquer, 6 mark primer crimp, lt. green box
bright brass circle appears around firing pin dent, intermittantly
this circular brass "plug" blow out, fouling the firing pin.
Dave Bostock (dea...@dc.seflin.org) wrote:
: I thought I'd solved by Czech rifle problems with the replacement of the
: crumbling crosspin that holds the firing pin, I posted about it and a
: recomendation not to dry fire. That solution just distracted me from
: more carefull consideration of an ammo problem which has again rendered
: my CZ 52 rifle useless in less than 50 rounds.
: OBSERVATIONS
: *brass case aym 52 headstamp, no primer crimp
: normal fired primer appearance, no problem.
: *steel case zv 61 headstamp, no primer crimp,
: normal fired primer appearance, no problem.
: *steel case zv 64 headstamps, 6 mark primer crimp,
: from a full but unsealed tin purchased from Century, all 15 round boxes
: same light green color, some were torn open with loose rounds inside of
: shipping box. Normal fired appearance of these rounds is a
: bright brass perfect circle around the primer dent but not concentric
: to the firing pin dent or the outer edge of the primer. Unfired
: apearance of these rounds is an all black primer in a green laquered
: steel case.
:
: THE PROBLEM-Some of my zv 64 cases show perfect circular holes in
: the primer where that bright brass perfect cirle normaly appears. edges of
: these holes are sharp right angles at the inside and outside surfaces of what
: remains of the primer. The berdan anvil portion of these cases is plainly
: visible thru these holes. Leakage of powder gases and fouling rushed
: thru my bolt - around the firing pin, finally siezeing my firing pin in the
: bolt and cooking the light spring that surrounds the firing pin inside
: the bolt, powder dirt was visible on the hammer face from these primer
: failures.