The smallest sd and es I’ve chrono’d

Wow.

How many shots? And what cartridge/bullet/powder?
3 shot group. Looked like a node when I shot a ladder. 7prc 175gn ablr retumbo cci250 adg seated 0.050

68.0gn retumbo. First time I shot the 3 shot group
0.752” 2740fps avg sd 12.6 es 28.5
Felt like I pulled a shot so reloaded it.

Shot it again today.
1.680” 2712fps avg sd 1.8 es 4.3
 
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