I just discovered the Berger EOL Extreme heavy hybrid 170 grain .277 cal bullet, today. Apparently it's a limited run bullet. They're over 1.5'' long and a 1-8.5'' twist is recommended, but I saw a thread on longrangehunting.com where the OP shot them out of his .270 weatherby, and apparently they went into the target straight, so they seem to be stabilized at the velocity he was pushing them at. The G1 BC is supposed to be over .7
There's also 200 grain bullets available here and there, which will stabilize in 1:10 twist barrels because of their relatively short length for their weight. I don't see it very useful unless you're going after elephant or something. IIRC they are solids.
I believe Barnes also makes a 120 grain solid, for anyone interested in solids for the .270