Editing .475 Linebaugh (section)

{{Short description|Revolver cartridge}}
{{more citations needed|date=January 2013}}
{{Infobox Firearm Cartridge
|name= .475 Linebaugh
|image=<!-- Deleted image removed:  [[File:475 Linebaugh and 480 Ruger cartridges.jpg|200px]] -->
|caption=A .480 Ruger and a .475 Linebaugh cartridge 
|origin= United States
|type= Handgun
<!-- Production history -->
|designer= John Linebaugh
|design_date=1988
|manufacturer=
|production_date=
|number= 
|variants=.475 Linebaugh Long or .475 Linebaugh Maximum 
<!-- Specifications -->
|is_SI_specs=
|parent=[[.45-70]]
|case_type=Semi-rimmed, straight
|bullet=.475
|neck=.504
|shoulder=
|base=.504
|rim_dia=.540
|rim_thick=.065
|case_length=1.4
|length=1.77
|case_capacity=50.3
|rifling=
|primer=Large pistol
|max_pressure=50000
|max_cup=
<!-- Ballistic performance -->
|is_SI_ballistics=
|bw1=400
|btype1= J.F.N. Buffalo Bore
|vel1=1400
|en1=1741
|bw2=440
|btype2= E.W.N. Buffalo Bore
|vel2=1325
|en2=1714
|bw3=
|btype3=
|vel3=
|en3=
|test_barrel_length=5.5"
|balsrc= "Cartridges of the World"<ref name="cotw">{{cite book  | last = Barnes  | first = Frank C.  | editor = Skinner, Stan  | title = Cartridges of the World  | edition = 10th  | origyear = 1965  | year = 2003  | publisher = Gun Digest Books  | location = Iola, WI, USA | isbn = 978-0-87349-605-6 }}</ref>
}}

The '''.475 Linebaugh''' ('''12.1x36mmR''') is a rimmed revolver cartridge developed by [[John Linebaugh]] in 1986 in response to the scarcity of the [[.348 Winchester]] brass required to form his [[.500 Linebaugh]] cartridge.<ref name=":0">{{Cite web |last=Taffin |first=John |date=2017-10-04 |title=Reloading The .480 Ruger |url=https://gunsmagazine.com/discover/reloading-the-480-ruger/ |access-date=2022-11-17 |website=GUNS Magazine}}</ref> The cartridge is based on the [[.45-70 Government]] case trimmed to {{convert|1.4|in|mm|abbr=on}} and loaded with {{convert|.475|in|mm|adj=mid|-diameter}} bullets. While dimensionally similar to the older .45 Silhouette cartridge, the .475 Linebaugh is loaded to considerably higher pressures, resulting in significantly different ballistic performance.

The .475 Linebaugh was first announced in the May 1988 issue of ''[[Guns & Ammo]]'' in an article written by Ross Seyfried. In 1991, Linebaugh announced a {{convert|1.6|in|mm|abbr=on}} variant of the .475 Linebaugh for use in converted Ruger [[.357 Maximum]] revolvers. This cartridge is known as the .475 Linebaugh Long or .475 Linebaugh Maximum, and produces somewhat greater ballistic performance than the shorter round.<ref name=":1">{{Cite web |last=Prasac |first=Max |date=2017-03-10 |title=Big-Game Medicine: The .475 Revolver Cartridges |url=https://gundigest.com/gear-ammo/ammunition/big-game-medicine-475s-revolvers |access-date=2022-11-17 |website=Gun Digest |language=en-US}}</ref>