I agree with RockyMtnMt, and J E CUSTOMS.
Although both answers differ somewhat, thats exactly what I would consider a ''max range ballpark'' on an elk with a 308win.
Im not about to tell anyone they need a bigger gun, cause Id hunt elk with a 22lr if it was legal, and that was the only rifle I had. Id just limmit my shots to headshots only at about 10paces
There is alot of ''grey'' in the L/R shooting world especially concerning targets with an ability to soak up lead at times, with cartriges on the ''lighter side'' of the scale. IMO 500yds may be pushing it, but its doable. Id rather get closer if I was using a 308, but you on the other hand, may want to push it further. In the end its all up to the shooter. When conditions are right, theyre right, let er rip. But I can tell you from personal experience that even at alot closer range than that, and with a bigger cartrige, if you even slightly botch the shot you feel lower than dirt, and it can take days to find your critter. Go with your gut, and youll do well, be it 400 or 600yards, whatever. When its right its right, and when it isnt, get closer.
Listen to your gut and youll be satisified, and have an elk in the freezer.
"Its not Rocket Surgery.....'
GOD,GUNS,&GUTTS MADE AMERICA, LETS KEEP ALL 3!winmag
"I have No idea why that cop made me ride in the back seat, when I Clearly called Shotgun!"