Seafire,
I might be concerned about the bulkiness of RL 15.5 in the 6 ARC. It is a very bulky powder. I had not thought to try it in my 6 ARC but I will give it some thought.
EDIT: AR Comp is looking very good in mine (an 18" AR) with the 103 ELD-X. I am slightly exceeding Hornady factory velocities at sub-MOA, and I have read great things about the temperature resistance of AR Comp, so I may have found my load.
Cheers,
Rex
Last edited by TRexF16; 02/09/23.
