One “LIVE” Cartridge not a Box: .510 Whisper Wildcat, by Lehigh Defence, no longer produced! Produced with new Peterson .338 Lapua Magnum brass cases with “PTLΩ 19” Head-Stamp and Lehigh Defence, 725 grain, SCF (Subsonic Controlled Fracturing) projectile.
History of the .510 Whisper Wildcat Cartridge:
The .510 Whisper is the creation of J.D. Jones of SSK Industries.It was created by shortening a .338 Lapua case to 1.875″ long and necking it out to accept .50 caliber, 750 grain projectiles for suppressed rifles.With a muzzle velocity of 1050 feet per second, test have proved accuracy out to 600 yards
