If everything goes well, by the end of this week I will have a .300 BCK upper I will pick up from TNT Weaponry at the Expo Center and most reloading tools and components. 1. Seems that AA1680 is the favorite propellant for sub-sonic loads, but I do not have any. Who carries it locally? Any vendor who frequents the PDX gun shows? 2. If I can't get any AA1680, what about AA5744 as a plan B? I have a 2-3 lb of AA5744 (extruded), a bit faster and bulkier than AA1680 (ball). Has anyone tried it with 220gr SMK? Me thinks it should work fine on a pistol length gas system. 3. Id like to experiment with .309 cal 200-240gr cast bullets. Problem is, I dont do cast and have no intentions to take up yet another hobby. Does anyone know who has them? I know of a couple of vendors who have gas checked bullets which are almost as expensive as match jacketed bullets. Thats not what I want. I am looking for the typical bullet used for .30-06 at under 1800fps that can feed reliably on the AR platform.