I was wondering if the Chrono was reading low (LabRadar - definitely on the right settings). The factory ammo I shot - cheap Ammo Inc garbage - was running about 600 FPS and the box said 850. But then I ran the new 357 Mag 180 grain load from Lost River and got some crazy high numbers. ~1625 FPS out of a 6ā€ GP100 and ~1700 from a 7.5ā€ Redhawk.

My biggest uncertainty with the loading was definitely the crimping. Iā€™m using Hornady dies, and the instructions are a little vague and subjective as far as crimping goes.

Last edited by Ramsdude47; 01/20/24.