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renaissanceman

Cycling issues -- 20" Ballistic Advantage 308 barrel, rifle length gas (high frame rate video included)

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27 minutes ago, Matt.Cross said:

I wouldn't advise it. You need to keep changes to a minimum, drilling your gas port might cause issues you could've avoided. If the correct buffer and spring fix your issue, you're done. If not, drilling up is the next logical step.

Yep, one step at a time, but like you, I am a little impatient, and I would be tempted, but the voice of reason says to fix one issue at a time, you probably will be drilling up soon, but if its too much, then you'll be buying a new adjustable gas block... these gents will get you there, keep us in the loop, I for one am very interested to hear the "end of the story"!

Whoops! you've already got one of those, lol.

Edited by billymagg

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renaissanceman,

Do you know which gen PSA lower you have? I just picked up a complete gen 3 lower and was planning on using an aero upper - but now I'm concerned. I had heard they fixed some of their issues with gen 3, but perhaps not...

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27 minutes ago, Entebbe07 said:

renaissanceman,

Do you know which gen PSA lower you have? I just picked up a complete gen 3 lower and was planning on using an aero upper - but now I'm concerned. I had heard they fixed some of their issues with gen 3, but perhaps not...

my sugestion would be to get a psa upper to go with lower. psa has history of not playing well with other receivers 

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6 minutes ago, Entebbe07 said:

I'm new here and don't want to hijack further. But now I'm reading all the other PA10 threads and... Yikes.

I may still try for the aero upper so at least half my system is viable.

Welcome, and feel free to create a thread to discuss anything you want to about what you're working on and trying to accomplish.

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2 hours ago, unforgiven said:

Give back the PSA lower and get a Aero lower you will be happier.

No returns accepted I'm afraid. I think I'll proceed with the aero upper. When it inevitably doesn't work, I'll build out an aero lower to match.

 

Still curious to hear specific parts and how things resolve for the OP here. Could be I swap out the recoil system and get lucky.

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I finally got around to ordering the heavy buffer.  The first time the site's payment gateway was down, and then holidays hit and that was that.  

Looking forward to getting this thing running.  

Edited by renaissanceman

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On 1/13/2021 at 6:19 PM, renaissanceman said:

I finally got around to ordering the heavy buffer.  The first time the site's payment gateway was down, and then holidays hit and that was that.  

Looking forward to getting this thing running.  

I hear you, my 37 coil flat wire spring from Wilson Combat came in today, I tried to run my small frame 300 Ham'r on what used to be their hot set up 40 coil flat wire, and wasn't even getting it to lock back... so standard spring and H2 buffer, Bill asked me why I was running an H2 buffer, it wouldn't pick up the second round off the top of the mag.  any way, they are going to 37 coils, and have one for small frame and one for large frame.. I'll save that 40 coil for a spare for my large frame rifle. Thanks for giving us an update, I still think you are going to have to drill that gas port, but as the experts reminded us, one thing at a time, LOL.

Oh and Wilson has gone to a mid length gas port on their 18" 300 Ham'r barrels, as they were undergassed with the 13.25" intermediate length gas tube...

 

Edited by billymagg

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16 minutes ago, billymagg said:

Oh and Wilson has gone to a mid length gas port on their 18" 300 Ham'r barrels, as they were undergassed with the 13.25" intermediate length gas tube...

^^^  There's something else going on there, and it's not "under-gassed."  Midlength gas tubes are 11.750" long.  Armalite AR-10 "Carbine" gas tubes are 12 1/16" long...   Longer than AR15
"midlength" gas tubes...   The Wilson Intermediate gas system is a brand new animal, for everyone, at 13.250" long. 

If they "shrunk" the gas tube length, stating it's under-gassed at 13.25" - then there wasn't enough dwell time in that barrel config.  Gas port diameter needed to go up, on that 13.25" gas tube, to make it run right.  Or, keep the same barrel gas port diameter, and shorten the gas tube... UP the dwell time to make the pressure needed...

There's more to that story, and I wish I had both barrel configs, to see what it really is... Someone's not being told the truth, here...

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