Grinding / vibration / chain tension

I think Sheldon's "tight as you can get it without binding" advice is probably the least helpful bit of fixed gear lore out there.

You're better off with "loose as you can without chain drop".

I might just be a bit over cautious. My old chainring was terrible and even when it was very tight at one point it was so slack at another point it threw the chain halfway down a fucking massive hill. Made me fairly worried about the chain being too slack. Guess I'll just have to keep adjusting and testing.