Bullet: 36 gr
Varmint Grenade
(Barnes)
Diameter: 0.224"
Powder: IMR 4227 (Improved Military Rifle)
Starting Powder: 15.0 gr
Max Powder: 16.5 gr
Primer: WIN WSR
Case: REM
Trim Length: 1.390"
Cartridge Overall Length: 1.830"
Starting Velocity: 2,726
Starting Pressure:
Max Velocity: 2,995
Max Pressure:
Barrel: 14" with 1:14" twist.
Source: https://www.barnesbullets.com/wp-content/uploads/2021/05/221-Fireball.pdf
Printed from Shooter's Reference on 12/30/2024: