You might consider just reading this thread.
Title says it all really.
I have a VST 18g (and love it), however I actually bothered weighing how much beans I was using per shot and it was closer to 20.5g. I just fill basket, lightly tap to settle grounds, flatten it off with my finger to all edges (not applying any down pressure, simply pushing the beans around), and tamp.
I'm a fan of the 'if it ain't broke, don't fix it', and I have no problems with my shots, the pucks look just peachy, however technically, should I be adjusting my grind and using less beans per shot? If so.. huzzah, more coffee per kg!
just had a read -- glad to see it's normal!
thanks, interesting thread.
what do you guys generally use to measure the weight? I have a set of digital scales, but its only accurate to 2g, so not all that useful. Cheap is good too
Go to ebay and can fine small cheap ones.