The improved rifle case, pioneered by P.O. Ackley, steepened the shoulder angle and fire-formed most of the taper out of the cartridge case body to increase internal capacity.
Gun test: Bighorn Arms TL3 in .224 Valkyrie
RifleShooter - Toronto Public Library - OverDrive
RifleShooter - Toronto Public Library - OverDrive
Creedmoor Sports CSR-1 Rifle An Official Journal Of The NRA
Confessions of a Lazy Handloader - Shooting Times
7 Top Modern Long-Range Cartridges - RifleShooter
Improved Rifle Cases Benefit the Serious Handloader: The His - RifleShooter
Remington Model 8 Proved the Accuracy of Self-Loading Rifles - Firearms News
While everyone else is going shorter… buck the trend with this dumb 24” build. : r/ar15
Precision Reloading Guide Part 2: Case Preparation - Shooting Times
May, 2015
RifleShooter - Toronto Public Library - OverDrive
RifleShooter - Toronto Public Library - OverDrive