Below is one of my M5 builds that I'll use this coming season. It's chambered in .308, doesn't weigh that much, and with a 16" barrel, easy to use in a tree stand.
Light bullets in my 308 guns is all I need to accomplish all I want.
The Barnes 110's and 130's specifically. Damn accurate and love their close range (<400yds) trajectories.
A lot of "unexpected" powders work great with these lighter bullets also. --- SAWMAN