Well, it's been a little bit over 9 years since I did this project, time to update with some pics!
Yesterday getting ready to sight in my Sig M18 with its Sig Romeo 1 Pro red dot sight and then do some fun shooting with my new dueling tree and steel plate targets:
Pic including the pad and concrete shooting bench:
Closeup of the pad; still no cracks and/or movement even with last winter's weeklong 0-10 degree freezing event
:
Some dirt stains from where leaves collect:
Tabletop hasn't changed:
Thanks for looking!