Ordered 1K rounds from Sportsman's Guide for just over $0.30/rd. and was finally able to shoot some five shot groups at 60 yards.

#1
AR misc parts build. 16" 1:7. Bushnell 1-4 FFP AR Optics.
4"-6"
This rifle shoots 0.5"~0.75" at 100 yards with handloads or AE223GTV.

#2
Bushmaster ORC 16" 1:9. Bushnell 4.5-18 AR Optics
1" with an occasional random flyer.

#3
Savage 12 LRPV 1:7. 6-24 Vortex HS-T
0.75" with an occasional random flyer.

No feed or extraction issues.