Hey Pete, based on my experience with the Sauer 100 and several other 270's I would resize my cases, chamfer the case mouth, stick a Fed 210M primer in, and load it with 1gr less of H1000 than the Hodgdon site recommends as max under a 150 gr ABLR and head to the range. I would expect sub-moa somewhere around 30 rounds down the tube. But that's me. You should start low...:-). Good luck Mac