Yes, this is what I got and that's the ammo I use.
https://faxonfirearms.com/faxon-match-series-20-heavy-fluted-223-wylde-rifle-length-416-r-stainless-qpq-nitride-5r-nickel-teflon-extension-ar-15-barrel/
PSA has 77 TMK back in stock. Picked up a 1000. Also 8 shot first 4 was zeroing it in with the 77. Second 4 was the grouping at 100. The 4 grouping was done under 20 seconds per shot. I would like to mention I had to rezero from 75 black tip to 77 TMK. Shooting out of a 20in wyde Ar-15. At 300...