I'll find one for ya.....it's basicly a challenge for all riflemen to try.
20 rounds
20 seconds
20 inch group
1000 yards
No machine rest guns, can be fire from a sand bag or bipod etc w/ a scope off a bench or prone.
Can ya do it.....I'm about 6000 rounds into my learning the trick with the 6.5 Grendel on an HBAR flat top w/ a free floating dront handguard, harris bipod and a J stock w/ and accupod and a fixed power chuck of leaupolds best glass in size 16X...........It's a bitch ! Gotta learn to walk that first cold round , wind, mirage etc etc.....
What do ya think ?
I think I can't do 20 rounds in 20 minute into 12" at 600 with a M-14. (That is shooting clean 200-*X) There is no way I can do what you are talking about.