5 mm/35 SMc

Infobox Firearm Cartridge
name= 5 mm/35 SMc


caption=5 mm/35 SMc cartridges
origin= USA
type= Rifle
service=
used_by=
wars=
designer= Michael "Mic" McPherson and Byrom Smalley
design_date= 2004
manufacturer=
production_date=
number=
variants=
is_SI_specs=
parent= 6 mm BR
case type= bottlenecked, elliptical shoulder
bullet= .204
neck=
shoulder=.4598
base=.4709
rim_dia= .4728
rim_thick= .0157
case_length= 1.556
length= 2.03
rifling= 1-12
primer= small rifle

is_SI_ballistics=
bw1=32
btype1=BT
vel1=4650
en1=1535
bw2=39
btype2=BT
vel2=4250
en2=1564
bw3=
btype3=
vel3=
en3=
bw4=
btype4=
vel4=
en4=
bw5=
btype5=
vel5=
en5=
test_barrel_length=
balsrc= [http://www.superiorballistics.com/new_varminting_load/my_new_varminting_load_010.htm Superior Ballistics]

5 mm/35 SMc is a high performance 5 mm (.20 caliber) cartridge. Designed by Michael "Mic" McPherson and Byrom Smalley [http://www.superiorballistics.com/superior_ballistics_inc_web_site_006.htm Biographies] . "SBI". URL accessed March 3 2007.] and like all of their other designs carries the "SMc" moniker.

Description

SMc cartridges are an attempt to produce a more efficient cartridge. In other words, a cartridge that has low recoil, low heat, and high velocity. The 5 mm/35 SMc has produced velocities in excess of 1463 m/s (4800 ft/s) (30 grain (1.9 g) molybdenum disulfide-plated Berger bullet from a 28 inch (711 mm) Pac-Nor barrel), far higher than its commercial counterpart the .204 Ruger.

SMc cases have proven to be very difficult to produce. With the advent of the WSM case family based wildcat cartridges the SMc has ceased to be a viable high velocity cartridge.

ee also

* 5.56x45
* .204 Ruger
* .20 Tactical
* 5 mm caliber

References

* [http://www.superiorballistics.com Superior Ballistics]