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.450 Bushmaster
Rifle cartridge / From Wikipedia, the free encyclopedia
The .450 Bushmaster (11.48x43mmRB) is a rifle cartridge developed by Tim LeGendre of LeMag Firearms, and licensed to Bushmaster Firearms International. The .450 Bushmaster is designed to be used in standard M16s and AR-15s, using modified magazines and upper receiver assemblies.
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Quick Facts Type, Place of origin ...
.450 Bushmaster | ||||||||||||||||
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![]() .450 Bushmaster (left), .223 Remington (right) | ||||||||||||||||
Type | Rifle | |||||||||||||||
Place of origin | United States | |||||||||||||||
Production history | ||||||||||||||||
Designer | LeMAG Firearms LLC | |||||||||||||||
Designed | 2007[1] | |||||||||||||||
Manufacturer | Bushmaster Hornady | |||||||||||||||
Produced | 2009–present[2] | |||||||||||||||
Specifications | ||||||||||||||||
Parent case | .284 Winchester | |||||||||||||||
Case type | Rebated, straight | |||||||||||||||
Bullet diameter | .4520 in (11.48 mm) | |||||||||||||||
Land diameter | .4420 in (11.23 mm)[3] | |||||||||||||||
Neck diameter | .4800 in (12.19 mm)[3] | |||||||||||||||
Base diameter | .5000 in (12.70 mm)[3] | |||||||||||||||
Rim diameter | .4730 in (12.01 mm)[3] | |||||||||||||||
Rim thickness | .0540 in (1.37 mm)[3] | |||||||||||||||
Case length | 1.700 in (43.2 mm)[3] | |||||||||||||||
Overall length | 2.260 in (57.4 mm)[3] | |||||||||||||||
Case capacity | 59.5 gr H2O (3.86 cm3) | |||||||||||||||
Maximum pressure (SAAMI) | 38,500 psi (265 MPa) | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Test barrel length: 20 in (508 mm) Source(s): Lynx Defense[4] |
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