.25 WSSM

.25 WSSM

Infobox Firearm Cartridge
name= .25 WSSM


caption= 25 WSSM cartridges loaded for an AR-15 magazine. For comparison, a 2 3/4" shotgun shell & 5.56mm NATO cartridge are included
origin= USA
type= Rifle
service=
used_by=
wars=
designer= Browning / Winchester
design_date=
manufacturer=Winchester
production_date=2004
number=
variants=
is_SI_specs=
parent=.300 WSM
case type=rimless bottlenecked
bullet=.257
neck=.305
shoulder=.544
base=.555
rim_dia=.535
rim_thick=.054
case_length=1.670
length=2.36
rifling=
primer=large rifle
is_SI_ballistics=
bw1=75
btype1=VMax
vel1=3775
en1=2374
bw2=85
btype2=BT
vel2=3547
en2=2375
bw3=100
btype3=BT
vel3=3264
en3=2366
bw4=115
btype4=BT
vel4=2999
en4=2297
bw5=120
btype5=SP
vel5=2985
en5=2375
test_barrel_length=
balsrc= [http://data.hodgdon.com/cartridge_load.asp Hodgdon Online Reload Data]

The .25 Winchester Super Short Magnum is a third member of the Winchester Super Short Magnum (WSSM) cartridge family created by Winchester and Browning. It is the largest caliber of the WSSM's and is the most capable of handling large game such as deer and wild boar.

It is a necked-up version of the .243 WSSM, [* [http://www.chuckhawks.com/25wssm.htm The .25 WSSM by Chuck Hawks] ] which is in turn a shortened .300 WSM (Winchester Short Magnum). The WSSM cartridges are based on ballistics design philosophies that are intended to produce a high level of efficiency. [ [http://www.browning.com/products/features/detail.asp?ID=2 Browning WSSM info] ]

Like other WSSM cases, the .25 is short and fat, which is designed to be more efficient. However, short fat cases with an abruptly angled shoulder and have been criticized by some as being difficult to feed properly in some rifles. [ [http://www.benchrest.com/forums/showthread.php?t=17770 Benchrest.com Forums] ]

Unlike the other WSSM rounds, the .25 is a magnum in name only, based on the case it uses. Performance wise it is almost exactly between the .257 Roberts and the .25-06 Remington, making it well suited for medium to large game. [ [http://www.chuckhawks.com/25caliber_cartridges.htm The Overlooked .25 Caliber Cartridges by Chuck Hawks] ] Performance is far less than other .25 caliber magnum rounds as as the .257 Weatherby Magnum. In fact, ballistically it's almost identical to the improved version of the .257 Roberts, which P.O. Ackley said was his favorite choice for an all-around cartridge. ["Handbook for Shooters & Reloaders vol I, Book by P.O. Ackley"; Plaza Publishing, 1962, ISBN 978-9992948811]

ee also

* .223 WSSM
* .243 WSSM
* .257 Roberts
* .25-06 Remington
* Winchester Super Short Magnum

References

External links

* [http://www.browning.com/products/features/detail.asp?id=73 The Experts Agree - The WSSMs are Winners! - Browning]
* [http://www.chuckhawks.com/25caliber_cartridges.htm The Overlooked .25 Caliber Cartridges by Chuck Hawks]


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