Im interestred in buying a varmint upper for an AR-15 chambered 6mm PPC. I saw this on (www.model1sales.com) and reserched the round. Ballistics looked good and since its .243 it'll be legal to take deer with here in CT. My only problem is ammuntion...I could not find any, just reloading data. I am not a handloader so does anyone know where i can buy this ammo from factory? Also, does anybody know of other AR-15 uppers that are chambered in something bigger than 5.56mm and accurate? I looked into the 6.8 SPC but decided it wasnt as fitted for long range work as it was deigned as an assault rifle round.