... If you get a small supermarket cut it make dry out at that temp...
This, in particular caught my eye, because I'd always read the main difference between small butts and larger ones was
cook time. So that said, I shop at grocery stores and they always seem to be about 5-8lbs (2.3-3.6kg).
I've only done a few, have taken them to 190 or 200 F, sometimes foil wrapped sometimes not, and usually cooking at somewhere around 230-260 F.
They pull apart "OK" but never quite as easily as I know they should. So the dryness thing ... I may search for larger cuts and see what happens.
Then again, I often forget to rest it in a cooler or whatever, too, so that's probably part of my problem.