Does adrenaline stack

If I use battle rage and an axe that gives me double adrenaline on hit does that stack togethe?

Yes they do, although Battle Rage and a Furious mod wouldn't be my top choices for gaining adrenaline.

What whould be you choice for gaining adr?

I like 'for great justice'. No linked attribute, so you can put points elsewhere, and still get full benefit.

Skills like hundred blades and cyclone axe that hit multiple targets are also very useful to gain adrenaline.

"To The Limit!"