It is a standard NRA precision pistol (formerly conventional pistol) target.
Thanks for the compliment!
I have a tool that can compensate for the size of the picture. So, if you have a B-6 sized target, the NRA standard target for timed 25 yard shooting, here are the measurements:
X ring ......................1.695 in
10 ring .....................3.36 in
9 ring .......................5.54 in
8 ring .......................8.00 in
7 ring .....................11.00 in
6 ring .....................14.80 in
5 ring .....................19.68 in
Using those measurements, I measured your group:
A 1.878" group at 25 yards, standing off hand, is impressive even if taking your time. Doing it under time pressure, even if 10 seconds seems generous to some, is really amazing shooting. You should consider joining the US Olympic team. No joke, that's a gold medal target.
Also, consider trying this:
Rastoff's Challenge- Dropping the Gauntlet I'd love to see you give it a go.