I’m after a qr seat clamp for my inbred, I fancy a hope or salsa one but neither seem to do a 29.8 mm, so I was wondering if the 30 mm one fits fine and clamps tight enough, surely .2 mm is neither here nor there.

30mm is fine. I’ve been using a salsa one on my inbred for the last 3 years without any problems. Still got a nice smooth action.

As sqwubbsy says, 30mm will work fine although I’d recommend the O-O CNC QR as per here…

http://www.on-one.co.uk/i/q/SCOOCNCQR/on-one-cnc-qr-seatclamp

Used one for yonks and they work very well. Currently being used on my PA

I have the above for sale if you like – bought it and it didn’t work well on a bike that needed a 30mm clamp 😮
While the .2mm isn’t much, in this case it meant that it wouldn’t tighten properly – as far as I remember…