jonathan18:
@ShinyChrome (and any others): have you managed to perfect single shots? If so, what's the secret to your success? I've tried and failed every time I think (and so gave up ages ago); googling this clearly I'm not alone. As that thread covers, I too find the Breville single baskets are difficult to get a proper tamp, and putting in more beans to bring the grinds over that lip resulted in over-pressurising. (Indeed, it'll be interesting to know people's typical weight of beans for a single and double shot generally; I've been fitting 22g in a double shot, which may be part of the caffiene problem!) This is one of the reasons I've added decaf to the mix, as it lets me reduce caffeine intake while still pulling decent shots.
I got these from Amazon when I got my Barista Express.
The funnel really cuts down on wasted coffee with the only down-side being that I need to manually press the button to start the grind as the funnel doesn't fit under the holder on the machine.
The tamper will level the grind using one side and then you can set how deep to press the grind down on the other side. It's made for a very consistent pressure and coffee content with every cup. You would need a different tamper for single and double shot potentially though.
I actually need to re-calibrate everything as the grinder isn't producing as much grind any more but this is now 2 years after getting the machine.