In 2008 factory loaded .408 CheyTac 420-grain (27.22 g) lead core bullets with 955 copper jackets became available. The very-low-drag bullets are made by Rocky Mountain Bullets in Philipsburg, Montana and have a rebated boattail and a claimed ballistic coefficient (G1 BC) of 0.874.
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What is the CheyTac 375?
The .375 offers lower recoil, faster time to target, and many ammunition options including; ballistic tip and solid core. Precision Shooting magazine reported that CheyTac “in terms of flatness of trajectory…outperformed from 30 – 50%” competitors including .338 LM
What is the CheyTac cartridge casing design?
In the .408 CheyTac cartridge casing design particular attention was directed toward thickening and metallurgically strengthening the case’s web and sidewall immediately forward to the web to accommodate high chamber pressures.
What is the muzzle velocity of a CheyTac bullet?
For a typical .408 CheyTac chambered gun, shooting 27.15 gram (419 gr) Lost River Ballistic Technologies bullets (claimed G1 BC = 0.940) at 884 m/s (2900 ft/s) muzzle velocity, the supersonic range would be 1930 m (2110 yd) under International Standard Atmosphere sea level conditions ( air density ρ = 1.225 kg/m³).
What is the range of the cheyytac 419?
CheyTac LLC claims that the 26.95 gram (419 gr) projectile has a supersonic range of 2,200+ yards (2,011+ m) at ‘standard air conditions’. The average ballistic coefficient of the 419 grain (27.15 g) is 0.945 over 3,825 yards (3,500 m). Jamison International states the G1 BC of this bullet on their website currently (2009) at 0.940.
How much R25 in a 408 case?
If you put 131.5 grains of R25 in the 408 case with that bullet, you will get over pressure. That data is very HOT. Yup, that’s a very stiff load on the 419.
