I purchased the barrel in November, 2014. I loaded 16 different bullets from 55 gr - 77 gr with a dozen different gun powders for this barrel. While I did get several good groupings with a few loads, I could never get repeatable groups.
The smallest 5 shot group was in the .4"s, but most would shoot 1.5" - 4" groups.
Talking to Seekins was a waste of time, and it wasn't until I wrote a negative review on the site that I purchased the barel from that Seekins wanted me to send it back to them.
Seekins never shot a single round out of that barrel, but told me that it was in spec, and shipped it back to me.
Just to satisfy them, I purchased 4 different match grade factory ammo 75 - 77 grain and shot it in the Seekins, my RRA, and a ARPerformance barreled AR that I built. The RRA and ARP shot great as they always do, while the Seekins shot like crap, again. The Seekins barrel sets on a shelf in my shop now.