Is there an existing range for civilians where we can shoot a course mimicking a .mil range to judge our proficiency?

I know there was a place in Summersville, SC, that did the modified 25m range for quals.

I suppose you could ask to run it by yourself.

High power/ service rifle is basically the old school military KD course qualification.

A modern USMC table 2 or Army pop-up course would be harder to find.

25 meter range with an ALT-C target and E-Type Silhouette and the scorecards and courses of fire will get you started.  

Duplicating the Army pop-up ranges would be a lot more difficult/expensive.

Or you could run CSAT Standards​.  They are what MSG Howe used in Delta.

The army qual is kind of crappy to be honest. The newer one is better that it’s all one qual and has mag changes. You can buy an alt c paper target and mimick it at 25. Honestly if you have the range that will allow it or private land the defoor carbine qual is great. 3 min cap B8 target start at 75 and :
Run to 100 prone 10 rounds
Run to 75 kneeling 8 rounds
Run to 50 standing 6 rounds
Run to 25 standing 4 rounds
Run to 10 standing 2 rounds

270 is passing you coul use a vtac or uspsa and do upper A zone and just do hits