83107 Posted June 7, 2022 Report Share Posted June 7, 2022 I am far enough along with my build to have an update. I ordered a preassembled upper that is Aero but have a WMD BCG. I assembled everything to make sure it all fit. I found the charging handle was too tight on the last 1.25" of travel. The BCG was also tight going into lockup. I had to take about .002 off of the little top nub on the charging handle so it would go in smoothly like it should. I have a set of diamond files and used the finest one to just take a little off at the time and do a test fit. The BCG got a lot of lube and I just kept working it in and out till is started getting easier. I think it smooth enough not that it should cycle when fired. I am still waiting for the plastic vice block to fit into the mag well so I can set it up vertical and set the scope. More news to come if the mailman ever gets back to work and delivers my stuff. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 7, 2022 Report Share Posted June 7, 2022 Did you lube the gas rings on the bolt? Quote Link to comment Share on other sites More sharing options...
83107 Posted June 7, 2022 Author Report Share Posted June 7, 2022 7 hours ago, 98Z5V said: Did you lube the gas rings on the bolt? No. I did not. Easy enough to take it apart again and do that. Thank you for the reminder. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 7, 2022 Report Share Posted June 7, 2022 10 hours ago, 83107 said: No. I did not. Easy enough to take it apart again and do that. Thank you for the reminder. That's very often the most resistance in a brand new .308AR BCG. When you hear of "breaking in a BCG", that's the only internal thing that "needs broken in" - the seating and sealing of the gas rings, just like piston rings on a new engine build. Also, firing the weapon is much, much different than hand-cycling it. We, as humans, cannot replicate the force required to cycle the weapon, simply by hand. We can manipulate the weapon, but we can't replicate the cyclic operation. Quote Link to comment Share on other sites More sharing options...
83107 Posted June 28, 2022 Author Report Share Posted June 28, 2022 Update! Went to the range yesterday. I sure enjoyed getting to fire my new gun. I topped it off with a Vortex 4-12 diamonback sight so my old eyes could see the target. The 308 really shoots nice. I worked on the scope adjustments but did not get it dialed in before my time ran out. I did have an issue that I don't have an answer for yet. I had four failed to fires. It was always the first shot in the clip. The bolt locks back after the last round as it should. I drop the clip, insert a new clip, and press the bolt release button. This only happed four times and not every new clip. Ideas are welcome. Other than that, the gun seems to work well. I have to take some photos of my shells so I can get some input on the marks that I have. This thing really kicks the shells out hard. I am suspecting that I may have some tuning to do. Hopefully photos tomorrow. Quote Link to comment Share on other sites More sharing options...
83107 Posted June 28, 2022 Author Report Share Posted June 28, 2022 I have some not so clear photos. There is a small pit or dimple on every cartridge. Most also have the bar or strike damage. The shooting bench I was using had a plywood side so every shell ejected hit the wood then bounced. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 29, 2022 Report Share Posted June 29, 2022 That's from the shell deflector on the upper receiver... Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted June 29, 2022 Report Share Posted June 29, 2022 I put a patch of heavy textured grip tape on my shell deflector, seems to help. Quote Link to comment Share on other sites More sharing options...
83107 Posted June 29, 2022 Author Report Share Posted June 29, 2022 The deflector is nice and shiny from being struck. Grip tape sounds like a good idea. Quote Link to comment Share on other sites More sharing options...
83107 Posted August 20, 2022 Author Report Share Posted August 20, 2022 Update. Have been to the range twice since the first round. The gun is breaking in nicely. I am really enjoying shooting it. My groups are getting better but I am not shooting very accurately. It has been a long time since I was shooting regularly. Quote Link to comment Share on other sites More sharing options...
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