Thread: 6.5 Grendel and BM8208

Hi, first time posting on ballistics so any help appreciated. So i have been working up loads slowly form around 26.5gr to 28.1gr in .3gr increases of BM8208
I am using Hornady brass, CCI 450 small rifle magnum primers and Hornady 123gr ELDM projectiles. Rifle is Howa Mini 6.5 Grendel 16inch heavy match barrel and DPT suppressor.
All groups were around an inch except the 28.1gr load which narrowed right down to 1-/4 to 1/2inch groups and chrono was 2350 lower range loads to 2430 at the high loads of 28.1gr.
At 28.1 there are definitely ejector swipes but no flattening of primers. The coal is 2.260 at 28.1gr load and is compressed a little bit.
It seems on a lot of Grendel forums 28.5 grams with a 123gr projectile is the excepted safe limit.
Does anyone here have experience or comment?