YES.
It will work.
Its slower than Varget, and faster than IMR 4350.
Load for Varget: 150-grain bullet, 45.0 grains = 50,000 PSI at 100% loading density
Load for IMR4350: 150-grain bullet, 46.0 grains = 40,000 PSI at 100% loading density
You do the math.
Basically, at 100% loading density (bullet touching the powder), you're going to be at about 45-46 grains of Leverevolution.
Probably gets around 2500 fps with a 150-grain bullet.
I don't think its possible to load enough Leverevolution into a .308 case to do the gun any harm. Biggest issue you will have is slow velocity. A 150-grain bullet at 2500 fps is nothing to sniff at, but you can definitely get more velocity with a faster powder, and still be within safe pressures.
The only reason why you aren't finding any "published" numbers for Leverevolution in the .308 is because the manufacturer would rather sell you a powder that will deliver better performance in the .308.
SAAMI max for .308 is 60,191 PSI.
Remember, its "LEVER"evolution.
Well suited to give good loading density in bottleneck-cartridge LEVER guns that are usually designed around lower-pressure cartridges.
A full case of Leverevolution with a 150-grain flat-base bullet in a 30-30 is almost right on the button for correct SAAMI pressure.
That Leverevolution is not ideal for .308, by no means signifies that it is incompatible, or that it cannot be used.
I would start with 45.0 grains, and a 150 grain bullet.
If it shoots acceptably, you need look no further.