I knew about the bolt and just so happened that there was a magnum short action bolt for sale on the Hide, so I snatched it up. I've seen other rifles running on Surgeon actions run both before, meaning a standard boltface caliber and swapped to a magnum caliber. But your right, a quick call to Surgeon won't hurt. Any advice on whether to run SAUM or WSM? Is 1:8 to fast for the 180's? Thanks