dbarnhart
July 17, 2011, 04:21 PM
While at the range today testing the first 45ACP round loaded on my Hornady LnL-AP I had two Failure-To-Feed incidents. The slide would not go all the way forward. I ejected the rounds and set them aside so I could bring them home with me.
When I came home I gave these two rounds a careful examination to see if I could determine why. The COAL was fine on both, but the diameter at the case mouth was about .005 larger that the rest of the rounds I checked. My first thought was bad bullets but I pulled them and they measured .451.
Then I noticed that of the 100 rounds I fired today they were the only two with an AMERC headstamp. Compared to several other cases I measured these two AMERC cases have a case wall several thousands thicker.
I also removed the barrel from my Colt Combat Commander and tried dropping cartridges in to the chamber. A normal round made that nice 'tink' sound and seated as it should. The AMERC rounds would stop short of seating fully.
When I came home I gave these two rounds a careful examination to see if I could determine why. The COAL was fine on both, but the diameter at the case mouth was about .005 larger that the rest of the rounds I checked. My first thought was bad bullets but I pulled them and they measured .451.
Then I noticed that of the 100 rounds I fired today they were the only two with an AMERC headstamp. Compared to several other cases I measured these two AMERC cases have a case wall several thousands thicker.
I also removed the barrel from my Colt Combat Commander and tried dropping cartridges in to the chamber. A normal round made that nice 'tink' sound and seated as it should. The AMERC rounds would stop short of seating fully.
