308FAN Posted April 24 Report Share Posted April 24 10 hours ago, 98Z5V said: Needs a 0.090" gas port diameter - or very, very damn close to that. Outstanding! Thanks, for the help. I was going post my troubles in another category. I didn't want to clog up an info thread. Quote Link to comment Share on other sites More sharing options...
Leaflike92 Posted May 22 Report Share Posted May 22 Criterion Barrel, SS Nitrided, .308, 16" barrel, rifle length gas, 15.25" tube, .094 gas port that is ~3.03" inches from center of hole to end of the barrel. Wanting to reliably run m80 ball. First post. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted May 22 Report Share Posted May 22 51 minutes ago, Leaflike92 said: Criterion Barrel, SS Nitrided, .308, 16" barrel, rifle length gas, 15.25" tube, .094 gas port that is ~3.03" inches from center of hole to end of the barrel. Wanting to reliably run m80 ball. First post. What is your gas block journal diameter? What size gas block is needed? Doubt it's 0.625", but it could be 0.750", 0.875", or 0.936". Back in the day, when it was Kreiger/Criterion, they made that profile barrel custom for Fulton Armory, it used a 0.936" gas block journal, because it needed a 0.105" gas port. Quote Link to comment Share on other sites More sharing options...
Leaflike92 Posted May 22 Report Share Posted May 22 (edited) It's .750 diameter. Was planning on putting a Wojtek click adjustable block on. Edited May 22 by Leaflike92 Quote Link to comment Share on other sites More sharing options...
98Z5V Posted May 22 Report Share Posted May 22 (edited) 7 minutes ago, Leaflike92 said: It's .750 diameter. Was planning on putting a Wojtek click adjustable block on. You can try that gas port size out, but I'm pretty positive that it's going to be too small, and you'll need to go up. Start a new thread on the build section, on your gun specifics, and go from there. No sense cluttering this thread up with the data, that may or may not be useful to this thread in the future. Edited May 22 by 98Z5V Quote Link to comment Share on other sites More sharing options...
Leaflike92 Posted May 22 Report Share Posted May 22 1 minute ago, 98Z5V said: You can try that gas port size out, but I'm pretty positive that it's going to be too small, and you'll need to go up. Thank you for the response, I've been reading though the forums a lot recently and it's clear to me that you are the community expert when it comes to things like this. I had the same hunch that it would likely be too small based on what I've read about manufacturers drilling these ports too small. Quote Link to comment Share on other sites More sharing options...
Dr. LeVar Burstin Posted Friday at 04:17 AM Report Share Posted Friday at 04:17 AM 16” Douglas 308WIN barrel. KAC E3 gas system (13.125” gas tube) .750” journal. Had Compass Lake drill a .086 gas port. Should be slightly over gassed? Running a Superlative AGB. Haven’t shot it yet. Kinda waiting on the AEM5-30 to clear. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted Friday at 04:26 AM Report Share Posted Friday at 04:26 AM 8 minutes ago, Dr. LeVar Burstin said: Kinda waiting on the AEM5-30 to clear. Interesting that you got one - how long has it been on order? Quote Link to comment Share on other sites More sharing options...
Dr. LeVar Burstin Posted Friday at 02:40 PM Report Share Posted Friday at 02:40 PM (edited) Pre-ordered the AEM5-30 thru Capitol Armory late March of 2021. Cleared F3 late January of this year, been pending since early February. It’s the chubby guy on the left: Edited Friday at 02:41 PM by Dr. LeVar Burstin Quote Link to comment Share on other sites More sharing options...
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