Some factory TC barrels will have the accuracy for small targets at 500 yards, but I wouldn't gamble personally.
I would contact MGM and have them build you a 15"-16" Encore barrel in either 243 Win, 6.5x47 Lapua, or 260 Rem.
If you want more of a laser then the 6-284 or the 6.5-284.
I would go with a 1-8 twist for all of these barrels.
For Yotes I would look at the 105 A-Max or the 95 grain Berger hunting (not match) VLD in 6mm.
In the 6.5x47 Lapua, 260 Rem, or 6.5-284 I would use the 123 A-Max for yotes and the 140 A-Max for deer. I have just never used the 123 A-Max on deer or antelope so I can't recommend it.
The 130 grain Berger in 6.5 is awesome on game.
Some of the set-ups I mentioned will take you well beyond the distances you are desiring and will shoot flat and do well in the wind.
Get a forend that has the hangar bar system in it.
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Originally Posted By: crowpopperwell the places i coyote hunt i can get up to around 500 yards distance with 90% under 300
as for deer basically under 275