I recently bought a box of PolyCase 9mmP RNP (Round Nose Polymer) ammunition and was surprised to see that the headstamp was simply “9X19mm” at the bottom of the hst. After some digging and some help, it turned out to be Truelove and Maclean Inc of Watertown CT. The company was established in 1944 making complex deep draw and light gage stampings. The business evolved over the years and branched out into other areas. For the past 15 years their strategy focused on critical components for the automotive and consumer/industrial markets both domestic and international.
I called them and they said their principle customers were automotive, but they had very recently branched out into making cartridge cases. It was a cold call, so the marketing individual I spoke with was hesitate to disclose a lot. He acknowledged that they had sold cases with their generic headstamp to PolyCase, and that they had made cases for “3 or 4” other loaders with their respective headstamps, but understandably did not want to disclose the names of their customers. My impression is that the cases were not necessarily all 9mmP. I hope they will open up a bit. I think I convinced him to retain a few examples of each case produced in a box in his desk drawer. Maybe he will eventually release the old ones but at least they will be out there for somebody to find eventually.
I recently picked up a well made unheadstamped brass case from a Georgia loader. A company had given them some trial cases but the guy couldn’t remember who they were. When I asked the T&M guy he said they had made unheadstamped cases early on and passed out 20 to 100 to loaders on marketing trips. He didn’t admit that the guy I had gotten it from was one of the companies he had visited, but did say that the case was probably theirs. I called the source of the cartridge and he said that the company who gave him the cases had given them a briefing that talked about their automotive experience with drawings and stampings and his recollection was they were in the North East. I think it is likely the unheadstamped case is from T&M also.
Perhaps those of you who pay a lot of attention to headstamps and handle a lot may recognize the letter style on the headstamp below in another 9mm or other pistol caliber. If so please let me know!