| .500 Linebaugh | 
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 | 
| Type | Handgun cartridge | 
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| Place of origin | United States | 
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|
| Designer | John Linebaugh | 
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| Designed | 1986 | 
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| Variants | .500 Linebaugh Long or .500 Linebaugh Maximum | 
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|
| Parent case | .348 Winchester | 
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| Case type | Rimmed, straight | 
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| Bullet diameter | .510 in (13.0 mm) | 
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| Neck diameter | .540 in (13.7 mm) | 
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| Base diameter | .553 in (14.0 mm) | 
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| Rim diameter | .610 in (15.5 mm) | 
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| Rim thickness | .065 in (1.7 mm) | 
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| Case length | 1.405 in (35.7 mm) | 
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| Overall length | 1.755 in (44.6 mm) | 
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| Primer type | Large rifle | 
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|
 | 
 | 
| Bullet mass/type | 
Velocity | 
Energy | 
 
| 435 gr (28 g) L.B.T-L.F.N Buffalo Bore | 
1,300 ft/s (400 m/s) | 
1,632 ft⋅lbf (2,213 J) | 
 
| 525 gr (34 g) L.B.T-L.F.N Buffalo Bore | 
1,100 ft/s (340 m/s) | 
1,410 ft⋅lbf (1,910 J) | 
   | 
| Source(s): http://www.buffalobore.com | 
The .500 Linebaugh (13x35mmR) is a .50 caliber handgun cartridge designed for use in revolvers.