No 25-06's
No 280's
No 284's
No 6.5mmx55's

Not as favorites any way (let alone long range favorites).

And now we're talking of extending the range from the usual 50 to 200 yards on out to 600 yards?
At that range, all cartridges (including a "laser flat" 25-06)will be long in flight and dropping badly so the keywould bedoping the wind and figuring in the elevation drop AND having the bullet arrive with the goods to finish the job (with diminished velocity, energy, and penetration) andall of thiswith an INCREASED chance of the "holygrail of perfect bullet placement" being highly suspect (except on the internet of course).