123 ELD-X varget.

[45C]

https://postimg.cc/gallery/2wqfc3rdm/

[Bfglowkee]

While Varget works in the Grendel it is not ideal. Accuracy is solid but nothing spectacular and velocity is below average. I messed with 107s all the way to 129s and found it lacking in both categories when you compare charge weight vs other powders. If you want a good performing all around powder for your Grendel and useful in 223 and 308 as well I suggest AR Comp. personal opinion only but it does everything Varget does for me and better with very similar temp stability. I only load for bolt rifle.

[Rosecrans1]

45C....................What manufacturer or barrel manufacturer are you using and what barrel length?
I too have a very slow but very accurate pet load using 8208XBR and ELD-M's. (27.1gr 8208xbr/CCI450/ELD-M 123gr/Hornaday Brass). Nothing wrong with a slow but accurate load if you know it's limitations. Just keep searching for the faster long distant accurate load.
If you haven't tried 8208xbr, I would strongly suggest it and maybe Benchmark as well. Just stay in the context of the published load data.

[45C]