Argentine 105 x 371R Case heastamp


#1

I acquired a 105 x 371R Case made by Fábrica Militar Fray Luis Beltrán in Argentina.

Can anyone (Fede?) explain what the bottom line of the case headstamp stands for?

The headstamp reads:

L O T - 7 - F L B - 76
OB 105 / 14 / 24,5 FMK 3 MOD 0

The primer reads:

PP FMK 3-MOD 0-LOT 3
FLB - 11 - 76 - FLB

Thanks for any info.


#2

Hello Falcon,

LOT - 7 - FLB - 76 = Lote 7 Fray Luis Beltrán 1976
OB 105 / 14 = Obús Calibre 105 mm L14 = OTO Melara Pack Howitzer Model 56 Caliber 105 mm
OB 105 / 24,5 = Obús Calibre 105 mm L24,5 = US M101A1 (M2A1) Howitzer Caliber 105 mm (in motorized carriage)
PP FMK 3-MOD 0-LOT 3 FLB - 11 - 76 - FLB = Estopín a percusión FMK 3 Mod. 0 Lote 3 = Percussion Primer FMK 3 Mod. 0 (US M28B2 equivalent)

These are two loadings of this round contemporary to that case (projectiles made by Fábrica Militar “Rio Tercero”):


#3

Thanks for the very detailed reply Fede.

Am I correct that “14” and “24.5” are the barrel length of the guns in multiples of 105mm (calibres)?


#4

Falcon, yes, you are correct, in artillery terminology the prefix “L/” indicates barrel lenght. The OTO-Melara barrel is 14 calibers long, which means 105 mm x 14 = 1470 mm.


#5

So what does the “F” in front of the “MK” represent?


#6

Falcon, the “FMK” designation was used for ammunition developed in Argentina and the “MK” for local productions of foreign designs. The “F” indicates “Fábrica Militar” and the “MK” indicates “Mark”, but note that this is “MK” and not “Mk” like as in British practice.


#7

Thanks Fede. Excellent information.