5 mm/35 SMc
| 5 mm/35 SMc | |||
|---|---|---|---|
 5 mm/35 SMc cartridges |
|||
| Type | Rifle | ||
| Place of origin | USA | ||
| Production history | |||
| Designer | Michael "Mic" McPherson and Byrom Smalley | ||
| Designed | 2004 | ||
| Specifications | |||
| Parent case | 6 mm 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 caliber) cartridge. Designed by Michael "Mic" McPherson and Byrom Smalley[1] and like all of their other designs carries the "SMc" moniker as well as being patented and having a copyright.[2]
Description
SMc cartridges were developed in an attempt to produce an efficient cartridge combining low recoil, low heat, and high velocity.[3] 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, rifles chambered for 5mm/35 are available from the custom shop at Savage Arms.[4]
The patents for the cartridge are US 7210260, US 7086336 and US 2003079639.
References
- ^ Biographies. SBI. URL accessed March 3, 2007.
- ^ Johnson, Norman E (July 2006). "The 5mm/35 SMc Cartridge in a Custom Savage Model 12". Varmint Hunter. Retrieved 3 October 2010.
- ^ Mission Statement at Superior Ballistics Inc.
- ^ Madelon, Kimberly. "Varminter in 5/35 SMC". Rifle Shooter. Retrieved 3 October 2010.
- Superior Ballistics
- McPherson, M.L. (October 2002). "More Dope on the SMC Cartridge Line,". Varmint Hunter (44): 78–79.
- McPherson, M.L. (April 2008). "Progress of the 5mm/35 SMc". Precision Shooting Magazine.
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