The 8.5mm Mars is an experimental centerfire pistol cartridge developed in the late 19th century based on necking down the .45 Mars Long case. The bullet has two deep cannelures, and the case is crimped into both. The case mouth is chamfered on the outside to fit flush into the forward cannelure. This elaborate bullet seating was necessary to withstand the violent feed mechanism of the Mars Automatic Pistol. The cartridge headspaces on the shoulder adjacent to the neck. The case has a thin rim and deep extractor groove in comparison to most rimless pistol cartridges. There was a very similar 9mm Mars cartridge firing a 156 gr (10.1 g; 0.36 oz) bullet at 1,400 ft/s (430 m/s). The Mars cartridges were publicized as the most powerful handgun cartridges through the early 20th century; but fewer than 100 pistols were made and manufacture ceased in 1907.[1]
mars, experimental, centerfire, pistol, cartridge, developed, late, 19th, century, based, necking, down, mars, long, case, bullet, deep, cannelures, case, crimped, into, both, case, mouth, chamfered, outside, flush, into, forward, cannelure, this, elaborate, b. The 8 5mm Mars is an experimental centerfire pistol cartridge developed in the late 19th century based on necking down the 45 Mars Long case The bullet has two deep cannelures and the case is crimped into both The case mouth is chamfered on the outside to fit flush into the forward cannelure This elaborate bullet seating was necessary to withstand the violent feed mechanism of the Mars Automatic Pistol The cartridge headspaces on the shoulder adjacent to the neck The case has a thin rim and deep extractor groove in comparison to most rimless pistol cartridges There was a very similar 9mm Mars cartridge firing a 156 gr 10 1 g 0 36 oz bullet at 1 400 ft s 430 m s The Mars cartridges were publicized as the most powerful handgun cartridges through the early 20th century but fewer than 100 pistols were made and manufacture ceased in 1907 1 8 5mm MarsTypePistolPlace of originUnited KingdomProduction historyDesigned1899ManufacturerKynochSpecificationsCase typeRimless bottleneckBullet diameter8 41 mm 0 331 in Neck diameter9 10 mm 0 358 in Shoulder diameter10 60 mm 0 417 in Base diameter10 70 mm 0 421 in Rim diameter10 40 mm 0 409 in Rim thickness0 90 mm 0 035 in Case length26 00 mm 1 024 in Overall length36 80 mm 1 449 in Ballistic performanceBullet mass type Velocity Energy139 gr 9 g FMJ 1 550 ft s 470 m s 740 ft lbf 1 000 J Source s Textbook of Automatic Pistols 1 MUNICION ORG 2 See also Edit8mm caliberReferences Edit a b Wilson R K Textbook of Automatic Pistols pp 236 237 Plantersville SC Small Arms Technical Publishing Company 1943 8 5x26 Mars MUNICION ORG Retrieved from https en wikipedia org w index php title 8 5mm Mars amp oldid 983037304, wikipedia, wiki, book, books, library,
