Reference / Paper · 2011
The C.I.P. cartridge and chamber sheet for the 7,5 × 54 MAS (dated 07-05-14, revised 11-05-25). The MAS FR-F2 dive quotes its figures for the French service cartridge of the FR-F1.
7,5 x 54 MAS C.I.P. Country of Origin: FR TAB. I Date 07-05-14 Revision 11-05-25 CARTRIDGE MAXI G 1 Lengths L1 1) L2 1) L3 1) L4 L5 L6 r2 H2 H1 m in L6 P2 L2 P1 L1 L3 S r1 α δ e min β f E R G 1 G h F r2 α1 H1 α L2 R1 Lengths L1 L2 L3 1) = = = Breech R R1 R2 R3 r = = = = = 1.40 12.34 3.20 10.50 0.80 41°11'9" 0.30 45° Junction Cone = α* S* = r1 min = r2 = 40° 58.32 2.00 3.20 Junction Cone = α 1)* S* = r1 max = r2 = 40° 58.32 2.00 3.20 Collar H1 * H2 1) = = 8.66 8.62 Collar H1 * H2 1) 8.70 8.66 Projectile G1 1) G2 F L3+G 1) = = = = 7.84 67.58 Pressures (Energies) Method Transducer Pmax = 3800 bar PK = 4370 bar PE = 4750 bar M = 25.00 EE = 3250 Joule E Notes: Dimensions in << mm >> Dimensions and Tolerances for Proof Barrels see Appendix CR 1. 12.39 12.25 11.30 = = = = Commencement of Rifling G1 1)* = 7.90 G 1) = 13.58 = 90° α1 * h = 0.38 s = i 1)* = 0°42'58" w = Barrel F 1)* Z 1) = = 7.57 7.85 Grooves b N u Q = = = = 3.70 4 270.00 47.17 Miscellaneous Dimensions Fe 1)3) = 0.15 delta L = Scale 1.02:1 42.73 46.37 54.32 76.00 P1 L1 L3 S r1 m ax P2 -0.20 -0.20 Powder Chamber E = 3.20 P1 1) = 12.30 -0.20 P2 * = 11.35 P1 P2 1)* i H2 Case Head R = R1 = R3 = E = E1 = e min = = δ f = = β 42.79 46.42 54.00 Powder Chamber E1 R1 = = = = = = CHAMBER MINI 1) Check for safety reasons 3) Headspace on Shoulder * Basic dimensions Reproduction forbidden as well as in the form of extracts without approval of C.I.P. mm²