5 mm/35 SMc

5 mm/35 SMc
5 mm/35 SMc cartridges
Type	Rifle
Place of origin	USA
Production history
Designer	Michael McPherson and Byrom Smalley
Designed	2004
Specifications
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)
Rifling twist	1-12
Primer type	small rifle
Ballistic performance
Bullet weight/type Velocity Energy 32 gr (2 g) BT 4,650 ft/s (1,420 m/s) 1,535 ft·lbf (2,081 J) 39 gr (3 g) BT 4,250 ft/s (1,300 m/s) 1,564 ft·lbf (2,120 J)
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" moniker as well as being patented.

Description

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.

Although it is a wildcat cartridge, rifles chambered for 5mm/35 are available from the custom shop at Savage Arms.

The patents for the cartridge are US 7210260 , US 7086336  and US 2003079639 .

See also

• 5.56×45mm
• .204 Ruger
• .20 Tactical
• 5 mm caliber

References

• Superior Ballistics