Bullet: 158 gr
JSP
(Speer)
Diameter: 0.358"
Powder: IMR 4895 (Improved Military Rifle)
Starting Powder:
Max Powder: 45.0 gr
Primer: CCI 200
Case: REM
Trim Length:
Cartridge Overall Length: 2.800"
Starting Velocity:
Starting Pressure:
Max Velocity: 1,988
Max Pressure:
DO NOT REDUCE <br />Note: COAL is less than minimum; may require single loading
Source: https://reloadingdata.speer.com/downloads/speer/reloading-pdfs/rifle/35_Whelen_158.pdf
Printed from Shooter's Reference on 10/30/2025: