I'm running out of my favorite 6.5 Grendel powder, IMR 8208 XBR, and can't find it anywhere. H335 has been readily available, so I was using that for my 223 loads and saw that this powder gives some top velocities for 123 gr bullets in 6.5 Grendel. So, I took a second mortgage on my house and bought an 8 lbs jug of it. Worse case I would just use it for 223, but I was hoping I can use this also with my 6.5 Grendel. I loaded a bunch up using new Starline brass for lower charges and several times shot and annealed Nosler and Hornady brass. (I was told that you should "break in" new brass at lower charges for longer life.) Despite the variety of brass (each group was shot with same stamped brass), everything shot spectacular. I had 2 sub-1/4" groups with the best at my highest charge tested (29gr) using 123 gr Hornady SST bullets. The COAL was approximately 2.25" (only recorded CBTO using Hornady 350 comparator, but from the notes I took, 2.25" should be close).
[ATTACH=CONFIG]18879[/ATTACH]
3 shot group, 0.21 MOA, 2612 fps (muzzle speed with Magneto Speed), SD 5.6, ES 11.
I'll be fine tuning this load and hopefully forget about having to find IMR 8208 XBR powder.
[ATTACH=CONFIG]18879[/ATTACH]
3 shot group, 0.21 MOA, 2612 fps (muzzle speed with Magneto Speed), SD 5.6, ES 11.
I'll be fine tuning this load and hopefully forget about having to find IMR 8208 XBR powder.

