6.5 Grendel

[John hunter]

I have a upper with a 20" Shelen barrel. I need a good starting load for 123 Gr.
A-Max and IMR XBR 8208. thanks

 

[MudRunner2005]

According to Hodgdgon, starting load is 25.5 grains, Max load is 28.5 grains.

I used their online reloading data center.

http://www.hodgdonreloading.com/data/rifle

 

[brentc]

I know it's not 8208, but I found a fantastic load for mine with AR Comp. 27.7 grains in a Hornady case with a CCI 450 at 2.250. Five shot groups cluster under an inch at 220 yards. My barrel is a SAAMI chambered Lilja 19". I found the CCI 450 is the key. I tried 41s and my groups opened.

I now only run 8208 in my .223 Wylde and NATO chambered ARs. It's a great powder.

What chamber spec do you have?

 

[John hunter]

It is a 20" Shilen I ordered from Midway
I'm sure it is SAMI, I've only fired about 20 rounds
of the Hornady SST which it doesn't seem to like much
so I'm going to try A-Max and see what happens

 

[MudRunner2005]

It is a 20" Shilen I ordered from Midway
I'm sure it is SAMI, I've only fired about 20 rounds
of the Hornady SST which it doesn't seem to like much
so I'm going to try A-Max and see what happens

I think he's asking if you have a Grendel, or Grendel II chamber.

 

[Tamarac]

I've had my best luck between 27.0 and 28.0. For me its been so forgiving of a powder that its hard to pick out the best powder charge in that range.