03-15-2018, 06:28 PM
24.0gr of H322 is a starting load per Hodgdon's data under a 123gr SMK.
Work the load up using Hodgdon's data as your reference (contained in the Grendel Handbooks as well).
Work up over a chrono in .3gr increments. 26.6C gr is the max listed by Hodgdon's under the 123gr SMK.
Your action will start to cycle with bolt hold-open once you get a little more above 24.0gr, I suspect.
Be very careful with RL10X. I would not use RL10X under a 123gr, or even a 100gr in Grendel. It's best left for 90-95gr cup/core bullets in my opinion.
Work the load up using Hodgdon's data as your reference (contained in the Grendel Handbooks as well).
Work up over a chrono in .3gr increments. 26.6C gr is the max listed by Hodgdon's under the 123gr SMK.
Your action will start to cycle with bolt hold-open once you get a little more above 24.0gr, I suspect.
Be very careful with RL10X. I would not use RL10X under a 123gr, or even a 100gr in Grendel. It's best left for 90-95gr cup/core bullets in my opinion.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com