I just tonight noticed the existence of Federal production of their law enforcement HST load in .45 GAP caliber. After digging into this using some specific words in Google, I found what looks to be company data sheets showing it at least as far back as 2009, and Google search returns for “P45GHST1” as far back as Jan-2008, but I had never heard of it. Does anyone know if HST for this caliber was a very limited run, or just something sent out direct to the few law enforcement agencies who use that caliber? I had never seen it on Gunbroker or anywhere else, and it also has a different headstamp than the other Federal .45 GAP loads (Hydrashok) in both 185gr and 230gr.
Those 2 headstamps are pictured below with the “fat” and “skinny” letter versions of that headstamp with no dots between the GAP letters (I scanned them side by side, they really are slightly different), and the HST headstamp is seen further down with the dots in the letters. I just ordered some of that HST ammo, and I only have the website photos so far.