I took my new Bergara 300 AAC Blackout barrel to the range for the first time. I shot through about 35 rounds of hand loads without problems. These were 147g surplus .308 bullets, 223 converted brass with CCI-400 primers.
I then proceeded to shoot a different load. These were 110g Sierra bullets, Remington 300 AAC Blackout Brass with (unknown) primers that were included with the newly purchased brass. I had to remove the primers to size the new brass and then re-install the primers. Shooting through about 20 rounds, five of the rounds would not fire on first attempt. I would try a second firing and these five would fire OK. Then I got to one round that would not fire. I tried 4 or 5 times, cocking the hammer and firing. No go. Then after letting it rest a little while I tried opening the chamber and it would not fully open. The barrel and frame would only open to about 1/8 gap. I then removed the barrel pin, took off the barrel and took out the round. With the round removed, I put the barrel back on at the range and continued to have a problem with it not wanting to open.
The extractor is on an angle as shown in the photo below.
Since getting home I have removed the barrel again for inspection. The photo taken below. I now put the barrel back on and the action will now open and close OK. The extract rest on an angle when it is pulled out fully.
Questions:
A) Do these symptoms point to any particular problem?
B) If this kind of problem is known, is it something I can take apart and fix?
C) Are there instructions on how to take apart the internal components of an Encore barrel?
