Originally Posted By Chris_1522:
6 grains under a 124gr Rainier FP drives it to 1150 FPS average from my CZ-75B.
6.8 under a 115gr Berry's RN drives it to 1237 FPS average from the same gun.
It also cycled a Finnish KP-44 much faster and more consistently than Wolf.
Zero pressure signs.
ETA: Will be trying a heavier 124gr load in the future. I believe Alliant's data goes to 6.4 under a 124gr. Gold Dot. A Gold Dot would be loaded considerably shorter, and thus typically operate at higher pressures, than a RN bullet of similar construction would.
Reload with confidence.
I have loaded to MAX OAL with considerably more powder than that & it was safe in my custom Glock race gun. In fact I loaded 124s past 1330 FPS with Power Pistol. Reason: the rules required it (USPSA Major). Without a reason to load that hot though, you should do as I say & not as I do. Don't do it!