Often found to be too explosive in high power rifles, at such moderate speeds the Ballistic Tips provide both expansion and penetration - this combination with excellent accuracy and a high ballistic coefficient. Another favourite pick for such an exercise would be the 180-grain (12 g) Nosler Accubond or the 200-grain (13 g) Nosler Ballistic tip traveling at 2,200–2,350 ft/s (670–720 m/s).
#338 spectre full
A full power load with fast powder can push a 165-grain (10.7 g) Barnes bullet to a muzzle velocity of 2,520 ft/s (770 m/s). 338 based on the 7mmBR case offer meaningful supersonic velocities. Currently this is the 300-grain (19 g) Berger Hybrid Open Tip Match (OTM) with a BC of 0.818 and a length of 1.820 inches (46.2 mm). Of course the silent, subsonic loads should be loaded below the speed of sound with preferably the heaviest and longest bullet the. To ensure terminal performance at subsonic velocities, heavy bullets for the caliber (250–300 grains (16–19 g)) are desirable. This allows the firearm to be suppressed relatively easily. Subsonic loads are often designed to avoid the turbulent transonic zone (~900ft/s - 1350ft/s or 0.8 to 1.2 mach) entirely.
#338 spectre crack
Ī subsonic cartridge is designed to fire its bullets at velocities slower than the speed of sound (1128 ft/s at 70 ☏) to avoid the sonic crack caused by the bullet breaking the sound barrier, which contributes in large part to the overall noise produced when using a firearm. 221 Remington Fireball case, simplifying conversion of firearms chambered in 5.56×45mm or its commercial counterpart. 260 Remington, 7 mm-08 Remington, etc.) is a relatively simple task. 308 Winchester (or any cartridge based on the. 338 Whisper from a rifle previously chambered in. 308 Winchester cases share the same case head dimensions, conversion to. 338 Whisper is based on the 7mm BR Remington case, necked up (enlarged) to take a. 338 Whisper are mainly limited to subsonic velocities. Unlike the smaller caliber cartridges in the Whisper family, loads for the. In the Whisper family, a group of cartridges developed in the early 1990s by J.D. JSTOR ( May 2008) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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