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The basic service round for the MAS-36 was the 7.5x54mm M1929C. The "C" designation identifies the cartridge as featuring a 139-grain full-patched spitzer, while the Balle "D" cartridge carried a 190-grain boat-tail spitzer. Military specifications of the Balle "C" round call for the 139-grain spitzer to be driven close to 2,700 fps from the 22.6-inch barrel of the MAS rifle. Chamber pressures are supposed to be down around 40,000 psi.
Ballistics - between the .308 Winchester (7.62x51mm
NATO) and the .30-06 Springfield (7.62x63 mm).
New Production Ammo -
Reloading Dies can be found at Midway USA.
Reloading components uses .308 bullets.
Brass - Very difficult to find.
If you use .284 Win to make 7.5 MAS it will require that the case head be reduced .020" and the primer pocket be recut. It can be done.
If 6.6x55 Swede is used, simply pass the brass thru a full length 7.5x54 MAS die, check length, chamfer and load. It can be done easily.
30-06 brass works well too. There'll be a slight bulge in front of the case head after first firing, and some fairly serious case length reduction will be needed, but with a power case trimmer or a mini tubing cutter it's no biggie. I like using U.S. GI brass because I have about 150 pounds of it left from a garbage can full I was given in the 60's.
Powder - IMR 4064 and H4895
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