I've come across two model 1910s this week that aren't chambered in 9.5x57ms. One is in .300 Savage and the other supposed to be in 8mnm Norm. The .300 Savage was "customized" by Engel & Troesch of Boston Massachusetts. I haven't received a reply about the 8mm norm yet. First two photos are of the .300. You can just make out the .300 Savage engraving pen on the left side. The last two photos are of the 8mm Norm.