Cartridge: 9mm Luger
Bullet: RMR 124gr MPR
Primer: CCI-500
Case: Mixed
Powder: Winchester 231
COAL: 1.091″
Springfield Hellcat Chrono Data (3″ barrel):
Ambient Temp. 78F
Charge Wt. – Measured Velocity
4.5 – 1068 fps
4.8 – 1111 fps
5.0 – 1131 fps
5.2 – 1155 fps
5.4 – 1188 fps
Caution: These loads are hot in my gun. I have settled on the 5.0 gr. load for my personal use. I have not seen any pressure warning signs in my gun, but for reference, my +P Federal 124gr factory ammo measured 1030fps out of my CM9 (different gun, looser chamber, same barrel length).