Pro tip: weighing my beans before and after grinding showed me a real difference
I started weighing my grounds after grinding instead of before, and over about 3 weeks the numbers finally clicked. My usual 18 gram dose was coming out as 17.2 on the Breville, which is roughly 4 or 5 percent loss stuck in the burrs and chute. Now I just weigh after and adjust so the basket actually gets 18, and my shots are way more steady. Is a few tenths of a gram of retention enough to bug you, or do you just grind a touch more and move on?