I've had good luck with the Lothar Walther 16" barrel I used for my franken AR build.
My 16.5" LW is the most accurate barrel I own and shows why one should never give up on an ammunition type.
I shot Aguila SV and subsonic from my CMMG heavy taper barrel for a couple of years after testing a dozen different types and finding those worked very best. Nothing by Federal gave promising results, so I assumed Federal was rubbish.
Vascar2 wrote good things about LW barrels in Spike's builds, so I bought one.
I tested at 50 yards with a Barska 1.5-6x euro. The rubbish Federal Gold Match Target put five rounds into a dime sized hole, then did it again. Always looking for something cheaper, I wondered if Federal Automatch would work well enough to be the regular stuff for this rifle. It threw some fliers, but also sometimes printed that same dime sized group. Weirdly, some old American Eagle HV, the stuff that was put in 40 round boxes back in the 90s to frustrate the innumerate like me, also did very well in offhand use.
The LW 10.5" shows the same preferences, but I've yet to put it on a bag with the big scope.
Lothar Walther left the market after CMMG changed the shank and collar depth. The fix is trivially simple for customers, but my sense is that they didn't want to sell a barrel that comes with an explanation.