I have over 1000 rounds through my R-93 LRS2 in .300 Win Mag and have never had a malfunction. Love the gun.
I had mine recalled for the non stainless steel pin.
What is the Problem?
The R93 trigger assembly uses stainless steel pins for corrosion resistance. We have learned that a small number of non-stainless steel pins were inadvertently used in some R93's. Note: the UIT, CISM, and LRS/LRS2 are not affected by this recall.
What could happen?
An accidental discharge from the off safe position may occur if an R93 with non-stainless steel pins is used and the pins have corroded due to moisture. In this situation, once the firing pin has been cocked (into the off-safe position), the rifle may discharge.
BTW IT WAS ONLY ONE GUN THAT HAS BLOWN UP.
The DEVA report on the Austrian accident has been posted at
www.waffen-online.de, go to "Diskussions-Forum", then "Jagd", thread "deva report zu r 93...".
Before our english-speaking friends come back and ask for a translation, I attempt a short summary:
A Blaser R93 in .300 Win.Mag. burst on the shooting range, after several shots with reloads. Parts of the lock were propelled rearward, causing serious injury below the eye of the shooter.
The reloaded ammo was tested at the Vienna proof house, and showed on average only a slight over-pressure (ca. 100 bar above the max. of 4300 bar, proof loads are 5590 bar).
The case causing the accident showed primer perforation and complete head separation in (to my opinion) untypical fashion: ca. one half of the separation occured directly at the bottom (or the belt) of the case, this of course caused significant gas escape to the rear.
The reloaded cases were not examined for any further flaws, like metal defects, or stretching due to improper headspace. It is also not mentioned, how often these cases were reloaded.
The destroyed R93 had a lock guide or rail system ("Verschlussführung") made of plastic.
DEVA attempted to simulate the accident with a similar rifle. The ammo used for this test was well inside max. pressure, but was prepared for case ruptures:
- primer perforation: no effect
- annealing: no effect
- a ring cut above the case bottom: still no effect, as the remaining case wall above the bottom still sealed the gas
- drilling a small hole in the case bottom, to direct gases backward: lock was instantly destroyed, lock parts were propelled backwards.
Conclusion: in case of gas escape the R93 with plastic lock rails is unsafe. Owners of such rifles should have replaced these parts by aluminum parts.
In a second test a R93 with such alu parts was used. Here the lock system held, no gas escape with cases prepared as above. Only when pressure was increased the almost 8000 bar, the barrel burst, leaving the lock intact.
The DEVA report did not include any further speculations on the possibility of similar accidents with the alu lock rail system (this is obviously standard since several years).
However it is stated that the R93 straight-pull lock has no back-up system to prevent bolt blow-back, in case of a gas escape or mechanical lock failure.
I copied this from HuntAmerica.com from Tue Sep 18 2001