|5 mm/35 SMc|
|Place of origin||USA|
|Designer||Michael McPherson and Byrom Smalley|
|Parent case||6mm BR|
|Bullet diameter||.204 in (5.2 mm)|
|Shoulder diameter||.4598 in (11.68 mm)|
|Base diameter||.4709 in (11.96 mm)|
|Rim diameter||.4728 in (12.01 mm)|
|Rim thickness||.0157 in (0.40 mm)|
|Case length||1.556 in (39.5 mm)|
|Overall length||2.03 in (52 mm)|
|Primer type||small rifle|
|Source(s): Superior Ballistics|
5 mm/35 SMc is a high performance 5 mm (.20 inch) cartridge. Designed by Michael McPherson and Byrom Smalley and like all of their other designs carries the "SMc" designation as well as being patented.
SMc cartridges were developed in an attempt to produce an efficient cartridge combining low recoil, low heat, and high velocity. The 5 mm/35 SMc has produced velocities in excess of 4,800 ft/s (1,500 m/s) shooting a 30-grain (1.9 g) molybdenum disulfide-coated Berger bullet from a 28 inches (71 cm) Pac-Nor barrel, far higher than its commercial counterpart the .204 Ruger.