09-27-2021, 02:20 AM
I don't see too much wrong with the side pictures of those cases. The longitudinal scratch lines are either from the barrel extension lugs or new magazine lips. The line around the diameter down where the web joins the hollow part of the case could be how your dies squeeze cases, or it could be that the case is coming back out of the chamber while still pressurized. Notch 8 on the Sentry seems high but you do have a few different recoil parts and it could also be where the port is.
A 3 0"Clock ejection pattern suggests the pressure is high but not severely.
The A5 buffer you are using is a little longer than MILSPEC. I take it you are using the slightly longer VLTOR buffer tube that goes with it? The A5 assumes there is a problem of bolt bounce to start with, at least that's how they market it. Upgrading from a $16 spring to something 10 times the cost assumes a problem justifying the cost. With an AGB there is far less need to mess with the MILSPEC recoil system it supplies gas to.
Ejector wipes suggests early unlocking while the case is still under pressure. That is why I asked for the barrel length.
A 3 0"Clock ejection pattern suggests the pressure is high but not severely.
The A5 buffer you are using is a little longer than MILSPEC. I take it you are using the slightly longer VLTOR buffer tube that goes with it? The A5 assumes there is a problem of bolt bounce to start with, at least that's how they market it. Upgrading from a $16 spring to something 10 times the cost assumes a problem justifying the cost. With an AGB there is far less need to mess with the MILSPEC recoil system it supplies gas to.
Ejector wipes suggests early unlocking while the case is still under pressure. That is why I asked for the barrel length.