Ok fjrst off. This is my first 1911. Kimber Pro Carry II. Bought brand new 2 weeks ago. So still never fired except factory test round. With a full mag, kimber, chip McCormick and Wilson Combat the gun jams. Now this only happens when theres 6 or more rounds in the mag. I cant for the life if me figure this ine out. Ive tried Corbon, speer gold dot and federal. Range ammo all with same results. The slide will nit close and the gun is not picking up a round. Please help.