This past weekend I was finally able to shoot my 556K after the long wait. I noticed something strange with the ejection of both of my AR's when running suppressed. The casings were being ejected between 1 and 2 o'clock, however as I shot through each 10 round magazine, the ejection distance would decrease. Eventually after about 5 rounds the casings were landing on the bench a few feet from the rifle. The ejection pattern obviously indicates plenty of gas (I'm running non-adjustable gas blocks) but the ejection distance was strange to me. The ammo was 55gr Federal .223, 55gr Independance M193 5.56, and 55gr Hornady .223. Does this sound normal?
Rifle 1: 12.5" BCM with H2 buffer and JP extra power carbine spring (I have a softer Tubb Precision flatwire buffer spring I could try)
Rifle 2: 16" Midlength BCM with H2 buffer and standard spring