Does any one have a SR1911? I'm curious because I noticed on the breach face opposite the extractor on mine there is one little section of it that is raised several thousandths of an inch higher than the rest. I notice , when inspecting brass , that it is leaving an indentation on the back of the cartridge after fired. This is on factory cartridges. The space where it's raised is in a spot where it looks like it could be a defect. The has not given me any problems as far as feeding an accuracy. It's been great for both. I'm just wondering if this is just on mine or all of them.