Left the red dot on the upper and shot some five shot groups at 50yds, benched, pack, no rear rest:
Top: CCI Green Tag, 1.35", .85"
Left: Wolf Target, 1.45", 1.55"
Right: Fiocchi sm340, 1.5", 1.0"
Left: Winchester. 333, 2.76", 1.5"
Right: Remington, 1.64", 3.5"
A person could probably get sub 1" consistently w/ the match ammo if using a scope and a solid bench/prone position.
I did a five shot string from; offhand(green), kneeling(yellow) and prone. CCI Green Tag @ 50yds:
Spent several hundred rounds off the timer working on first shot and tgt transition speed:
The Remington bulk ammo is nothing but a pain in the ass, multiple failures(fire, chamber, extract) about 100rds fired. The Winchester had one failure(stovepipe) out of about 100rds fired. The other ammunition was failure free, about 50rds of match ammo.
I like this Spike upper:
Works well for speed, transitions and accuracy drills.
Not good for malfunction drills and reloading drills.