LarryP Posted August 21, 2009 Share Posted August 21, 2009 I have been finding quantities of 9mm brass on our public Range and havent a clue of its brand. The head stamp reads: HP (+) L7 A 1 91 The plus sign is in a circle and the “A” is questionable it could be a symbol like an A without - “/\”. Also, there is a RED coating around the primer. The weight of the case is a little less then Winchester brass. I cleaned a dozen and loaded them. They’re tight. All primers went in okay, when I case sized them in my Loan Wolf Barrel not one came out when I flipped it. No problem in my stock Glock barrel. I Anyone recognize this Head Stamp? Thanks, LarryP Link to comment Share on other sites More sharing options...
Dale Rader Posted August 21, 2009 Share Posted August 21, 2009 Here is a good place to start. It may have the information you need. http://www.cartridgecollectors.org/headstampcodes.htm Dale Link to comment Share on other sites More sharing options...
Wayne Dobbs Posted August 21, 2009 Share Posted August 21, 2009 The cross in a circle means the ammo is loaded to NATO specifications. The cases marked "L7A1" are most likely Hirtenberger brand and that's some hot loaded 9 x 19 ammo. Link to comment Share on other sites More sharing options...
LarryP Posted August 23, 2009 Author Share Posted August 23, 2009 Here is a good place to start. It may have the information you need.http://www.cartridgecollectors.org/headstampcodes.htm Dale Very interesting, Thank you Dale Link to comment Share on other sites More sharing options...
LarryP Posted August 23, 2009 Author Share Posted August 23, 2009 The cross in a circle means the ammo is loaded to NATO specifications. The cases marked "L7A1" are most likely Hirtenberger brand and that's some hot loaded 9 x 19 ammo. Thank you Wayne. Hmmm...I think I'll save. Link to comment Share on other sites More sharing options...
Loves2Shoot Posted August 24, 2009 Share Posted August 24, 2009 I have a bunch of it. It is nato 9mm and is hotter for sure. We use it for shooting through the Uzi. The outside of the boxes read 50 rounds 9mm Ball L7A1 HP 20791 The inside reads SV3890 HP 90 Link to comment Share on other sites More sharing options...
joecichlid Posted August 24, 2009 Share Posted August 24, 2009 I have a bunch of it. It is nato 9mm and is hotter for sure. We use it for shooting through the Uzi.The outside of the boxes read 50 rounds 9mm Ball L7A1 HP 20791 The inside reads SV3890 HP 90 Hummmm I wonder if the stuff would make major? Joe W. Link to comment Share on other sites More sharing options...
JThompson Posted August 24, 2009 Share Posted August 24, 2009 I have a bunch of it. It is nato 9mm and is hotter for sure. We use it for shooting through the Uzi.The outside of the boxes read 50 rounds 9mm Ball L7A1 HP 20791 The inside reads SV3890 HP 90 Hummmm I wonder if the stuff would make major? Joe W. Doubt it... Link to comment Share on other sites More sharing options...
JimmyZip Posted August 24, 2009 Share Posted August 24, 2009 Saw old Isreali and Czech sub gun ammo make major through a 6" barrel BHP back in the pendulum days. It can be done. Link to comment Share on other sites More sharing options...
BLISH LOCK Posted August 27, 2009 Share Posted August 27, 2009 9MM L7A1 is +P+ high pressure ammo most boxes of this ammo i have seen are marked " not for use in pistols" Link to comment Share on other sites More sharing options...
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