[fabsroman]

Here's an update.

I adjusted the barrel yesterday. Took it off, lined it up by looking through the magazine well and making sure that the bolt fully contacted the barrel. So, the barrel fit wasn't an issue today. I even cleaned the chamber and inside of the receiver really well.

Today, I went to the range and started out with 100 of the CCI High Velocity copper bullet rounds. Had a failure rate of about 20% on those and I was fairly happy with that, even though I shouldn't be. Then, after shooting those, I tried the same rounds that gave me problems last week, the CCI Standard Velocity lead bullet rounds. The failure rate on those was about 60%. I got so disgusted that I didn't even finish the last 20. Just chucked all the unfired rounds into the trash can.

Could it be the firing pin spring that is causing the problem? If so, I can probably just replace the spring. Probably wouldn't hurt to replace the spring and see what happens.

Now, I am extremely happy with the new Green Mountain barrel. At 25 yards, the maximum range at this indoor range, I was shooting under an inch and I was only using the bipod on a shelf that I had to semi-stand up to shoot at. Kind of an awkward shooting position, but the barrel shoots circles around the crapola Butler Creek carbon fiber bull barrel I had. That thing was shooting 1 foot groups at 50 yards and it was pretty frustrating. I am going to join an outdoor range with a 200 yard range, and I am hoping to get this firing pin problem fixed so that I can try the gun out at 50 yards and not get sick. Plus, at the outdoor range, I get to use my own ammo, so I can start using the Velocitors. The indoor range requires us to use its ammo, and the selection truly sucks.