[soundguy]

I think i'd also have to say .308 as well.

762x39.. i'd not feel safe it would drop a moose at any long range unless you are a sniper.

the 762x54r is a great round.. hard to find in non milsurp.. so unless you relaod AND have a custom gun conversion.. I'd count it out.

If you say.. got a ruger mk1 in it, and used commercial new ammo or hand loaded ammo.. then that would throw it inthe running.. just based upon performance.

otherwise.. you can walk into a walmart and buy 308 ammo.. and 308 rifles are all over..

and ditto onthe other comment about 2000 yds.. that's a long way.

if I was routinely taking 1000-2000 yd shots.. I think I'd skip all 3 of those calibers.. especially if taking large game...

maybee 300 weatherby mag.. 375 H&H 338 lapua etc..