"Paul Tomblin" wrote

I tend the leave the prop at 2300 all the time, because our club charges
by a 2400 rpm "tach hour". I don't think there is any harm in running at
a low MP.

Lugging the engine hammers the bottom end bearings, but I don't think I would
consider 15 - 17 a harmful "lugging" pressure.
--
Jim in NC