I am currently conducting a study on potential subclass carryover on consecutively manufactured pistol slides with my graduate advisor and fellow AFTE member, Mr. Deion Christophe. This study seeks to further expand on previous works and provide additional research into the investigation of subclass and individual characteristics that may be viewed on the breechface. We are currently seeking ten consecutively manufactured pistol slides for macroscopic examination of the breechface markings on cartridge cases. We’ve made contact with Springfield (XD .40 S&W), Ruger (LCP .380 Auto); however, as of yet we have not received any confirmation as to procurement or purchase of these items. We are aware that Tom Deeb (Hi-Point Pistols) would more than likely be willing to assist in this research, yet we would like seek manufacturers that have not been thoroughly researched.
Through this examination, it is expected that the study will indicate whether breechface markings can be linked back to their respective pistol slide or if misidentification by a firearm/tool mark examiner is possible. We will utilizing a sample size of 1000 cartridge cases fired by these slides in a later validation study which may assist in developing error rates along these lines of examination.
I’m reaching out to examiners who have conducted previous research on this topic and anyone that may be in contact with manufacturers potentially interested in assisting with this project. It would be extremely benenficial to the project if the manufacturers allowed us to tour their facilities and observe the machining process of the firearms. Any and all assistance, suggestions, and comments are welcomed.