Tacoma Sportsman just had their 600 yard range open for the day on Sunday. A lot of .50 cals and .338
Ended up shooting my 100 yard zero'd Whetherby Vanguard S2 30-06 hitting a 2ft gong a few times. A few AR-15s (.223) were grouping extremely well at that distance too. One guy iron sighted his 303 British (not sure what rifle it was... OLD) and hit the gong, then ran out of ammo. That was pretty bad-ass.
Good fun. Hopefully they open that distance more often.