Bullet: 150 gr
(Barnes)
Diameter: 0.277"
Powder: IMR 7828 SSC (Improved Military Rifle)
Starting Powder: 63.5 gr
Max Powder: 69.0 gr
Primer: FED 215m
Case: Norma Precision AB
Trim Length: 2.539"
Cartridge Overall Length: 3.280"
Starting Velocity: 2,853
Starting Pressure:
Max Velocity: 3,113
Max Pressure:
*A 1:9.5” or faster twist is recommended for the 150-grain TSX. *Some of the early German-made Weatherby rifles had 1:12” twist barrels, which will stabilize only 110-grain TSX bullets.
Barrel: 24" with 1:10" twist.
Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/270-Weatherby-Magnum.pdf
Printed from Shooter's Reference on 12/06/2024: