Re: Velocity or Energy
I have to agree, but what about using a 125-150 bullet in .308 running it at high velocity. I know that Barnes makes a smaller weight mono metal bullets. They have a 110, 135, and 150 grain bullet. Run them with a 24" or longer barrel with a healthy dose of H4895, IMR 4064, H335, IMR 4895, CFE223, Benchmark, XBR8208. All of these produce phenomenal velocities with light .30 cal bullets. I looked at some load data on the Hodgdon site and they are claiming 3350fps with the 110 TSX. That will get you out to you prescribed distances. If you want a little more weight, go with the 135's. That would get good penetration with weight retention. With my playing with Alliant Power Pro 2000MR, you should be able to get the 150's over 3000fps.
Not to mention the lighter bullet would reduce recoil too. I remember loading 110 Hornady V-max in my .308 was a joy to shoot.
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it.  But small is the gate and narrow the road that leads to life, and only a few find it.
If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger
Friends don't let friends develop canonitis!
arguing over the internet is like the special Olympics....even if you win, you are still...special!