Bushnell Red Dot at 100 Yards

Bushnell Trophy 3 MOA Red Dot
Bushmaster XM-15 with a JP trigger
16.5" fluted barrel with thousands of rounds through it
Cheap Herter's ammunition
100 yards from a rest at the bench.
58 year old eyes with no corrective lenses.

Six inch target:

I am actually surprised that the group was so small