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QuickLOAD has a default database of predefined bullets, cartridges and propellants. The database of the more recent versions of QuickLOAD also include dimensional technical drawings of the predefined cartridges and for most cartridges photographic images. Data can later be imported or entered by the user to expand the programs database.
Miller twist rule is a mathematical formula derived by American physical chemist and historian of science Donald G. Miller (1927-2012) to determine the rate of twist to apply to a given bullet to provide optimum stability using a rifled barrel. [1]
This is a list of firearm cartridges which have bullets in the 12 millimetres (0.47 in) to 12.99 millimetres (0.511 in) caliber range. Length refers to the cartridge case length. OAL refers to the overall length of the cartridge. Bullet refers to the diameter of the bullet. Some measurements are in millimetres, while others are measured in inches.
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
The last brass case length was 1.050 to 1.100" long and was created exclusively for hand loaders so that both heel-base and hollow-base bullets could be used interchangeably (note that cartridges made from the longest brass cases and heel-base bullets are too long to fit most .41 Long Colt revolvers).
Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges.The initial testing was done in 2008 and tested the velocity of 13 common handgun cartridges as it related to firearm barrel length.
Typical factory-loaded .22-250 Remington can propel a 55 grain (3.56 g) spitzer bullet at 3,680 ft/s (1122 m/s) with 1,654 ft⋅lbf (2,243 J) of energy. [8] Many other loads with lighter bullets are used to achieve velocities of over 4,000 ft/s (1,219 m/s), while still having effective energy for use in hunting small game and medium-sized ...
A smaller-diameter portion of the bullet, the "heel", was crimped inside the case mouth, and the lubricant was outside the case, and exposed. [a] In contrast, the .38 Long Colt uses a bullet which on the outside of the cartridge case is only .357–.358 in (9.07–9.09 mm), the bearing surface and lubricant being entirely contained within the case.