6.5 Grendel and 123 CC with 8208

[Silverjay]

Anyone running this combination? I read a lot about Amax's, but not much about the Noslers.

 

[bobke]

Start at 27 and work up to max at 28.5. Watch ambient temp, as well. All typical advice to pacing the process, in your gun. Well worth your time to identify distance to lands with each lot of 123CC's-they can vary between lot numbers by .010. I sort, Tip and point them with CFE223 with very good results.

 

[BLAMM]

I am running one very close to max but it is shooting lights out in my AR.

28.4gr 8208XBR
Seated .040 off the lands
Rem 7 1/2 primer
2595 fps SD 1.0

 

[Silverjay]

Thanks, load development next week.

 

[MrFrankZ]

I'm running 2580s with that exact load. Dead nuts on.

Sent from my LG-H871 using Tapatalk

 

[Silverjay]

Any pressure signs at 28.4 grains 8208? Ran it through Quickload and it calculates lots of pressure when loaded to 2.250". It is using the bolt max pressure of 52K.

 

[bobke]

What brand and length barrel? 5R? Twist? Any freebore? Distance to lands with 123Amax in your barrel? Gas length? Lots of variables can affect pressure. As noted-work up in your barrel. If you'll hit up 65Grendel.com, there are a world of reference points to review. 28.4 8208 can be very near max in especially hot temps, given all of the unknowns above, even as Amax is a pretty forgiving ogival shape.

 

[Silverjay]

Agreed, my confusion came when Quickload indicates hitting bolt pressure at 26.5 grains.