Initially, the boat tail had been omitted because the Soviet designers had assumed ( incorrectly ) that it would only make a difference at long ranges, when the bullet became subsonic, and the accuracy of the intermediate cartridge at these ranges was considered inconsequential.
32.
With developed handloads, the 8mm Remington Magnum is capable of driving a 220 grain boat tail bullet in excess of 3, 000 ft / sec, and delivers as much energy at 500 yards ( 457m ) as the . 308 Winchester has at the muzzle.
33.
The OF45 projectile can be fitted with different rear ends, for example various types of screw-on boat tails, or the OF61 base bleed projectile which weighs 42.86 kilograms, has a maximum muzzle velocity of 828 m / s and a maximum range of 29 km.
34.
Due to the shape of its long, round tail, the Series 1 Spider is sometimes known by the nickname of " Osso di seppia " ( Italian for cuttlebone ) or " boat tail " to differentiate it from the " Kamm tail " Series 2.
35.
This full metal jacket s . S .-schweres Spitzgescho?( " heavy spitzer " ) boat tail projectile had a ballistic coefficient ( G1 BC ) of 0.557 to 0.593 ( ballistic coefficients are somewhat debatable ) and was loaded in the " s . S . Patrone ".
36.
Further innovations by Nosler included new techniques of manufacturing bullet jackets that yielded more consistent expansion, better core bonding techniques to prevent separation of the lead core from the copper jacket, and the plastic Ballistic Tip used to provide the streamlined shape of a Spitzer boat tail, with the expansion of a hollow point.
37.
In January 2014, the U . S . Department of Defense annual testing report found that the older A191 or MK 248 Mod 0.300 Winchester Magnum service round loaded with aerodynamically less efficient 190 gr ( 12.32 g ) Sierra MatchKing Hollow Point Boat Tail ( HPBT ) bullets fired from the XM2010 demonstrated adequate performance and lethality.
38.
For these reasons, in 1926, the Ordnance Corps developed the "'. 30 M1 Ball "'cartridge loaded with a new Improved Military Rifle ( IMR ) 1185 propellant and bullet with a 9?boat tail and an ogive of 7 calibers that had a higher ballistic coefficient of roughly 0.494 ( G1 BC ), that achieved a muzzle velocity of and muzzle energy of.
39.
This ammunition was developed as a . 300 Winchester Magnum Match Product Improvement ( PIP ) and uses the 14.26 g ( 220 gr ) Sierra MatchKing Hollow Point Boat Tail ( HPBT ) very-low-drag bullet fired at a nominal muzzle velocity of 869 m / s ( 2, 850 ft / s ) ?15.2 m / s ( 50 ft / s ).
40.
This ammunition was developed as a . 300 Winchester Magnum Match Product Improvement ( PIP ) and uses the 220 gr ( 14.26 g ) Sierra MatchKing Hollow Point Boat Tail ( HPBT ) very-low-drag bullet fired at a nominal muzzle velocity of 2, 850 ft / s plus or minus 50 ft / s ( 869 m / s ?15.2 m / s ).
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