I have come into possession ( thru my friendly scrap dealer) of a small quantity of fired .338LM cases, BALL AND BLANK!
Headstamp (1200) T (0600) 338LM, Nickel Plated Boxer LR primers, Uncrimped.
Ball case, primer flattened; Blank case primer slightly flattened, but not as obvious as the Ball case.
The Blank Case is approx. 4mm longer than the Ball case, with an 8-segment star crimp; also the “Neck” is reduced to about .30 cal about half way along the "Real "Neck, as well.
Obviously dropped off by a serving member, as this ammo is restricted to ADF Sniper teams and some Police SERT selected marksmen ( Police are NOT “Snipers”).
Any clues as to manufacturer…Brass is of Lapua Factory quality, and “T” is obviously NOT “Tula”…could it be “Thun” (CH) thru a connection between NAMMO and RUAG? or even “Troisdorf”? ( Old RWS-DWM facility, now RUAG?).
First time I have seen Blanks being made or used in a purely Sniper Rifle ( training potential Snipers in Firing technique, etc???) Unless they are also using a Semi-Auto (Sniper) Rifle in this calibre, with appropriate BFA fitted. Blanks are Blown “full out”, so initial pressure must be sufficient to operate mechanism without back pressure to crush or reclose crimp ( as happens in Assault Rifles and MGs.).
Any help appreciated.