And for us dummies, What is DMR and CQB.I feel like if you're just looking for plinking ammo or ammo for inside of 400yds you won't notice much difference. Where I have seen differences as ES and SD on your velocities. Basically clean consistent pockets help with less vertical stringing at long range.
I do clean for my DMR loads but for anything meant for CQB it's a useless gesture in my opinion.