Striker bossing combo and question

I know barrage > 2x drain/FF is the best dps, but sometimes you don't want to use that much pot

Is barrage > CSB > barrage really better than barrage > CSB > drain/FF? There's a little delay after CSB before you can use barrage again.


And yes barrage > CSB works perfectly, but I'm just wondering if spamming drain would be better than weak CSB in between barrages.