SolidBuilt Posted November 13, 2022 Report Share Posted November 13, 2022 I opened up the gas port on my Aero Precision M5.... it was running flawlessly while I had it set up with the Yankee Hill flash suppressor/ Superlative arms adjustable gas block, 16" Wilson combat Recon barrel / JP polished spring and 3.4 ounce buffer weight.... I had the adjustable gas block 25 clicks from zero (at 18 clicks, the Superlative arms gas block is fully open... added 7 more "bleed off" clicks to reduce gas). Then, I purchased an AMA lil bastard muzzle brake. The brake works great, but it threw off my gas setup... it wouldn'tcycle... I clicked back to 18, fully opened, and it was still short stroking. So, I came home and drilled out the gas port from factory 5/64" to 3/32"...and, holy cow!! Now it's overgassed! Even at 40 clicks, full bleed off, it seems just a bit overgassed.... and, that's with a heavier 4.4 oz buffer weight. So, that's no good because if I ever run hotter ammo, now I can't adjust any further... Therefore, I just purchased an extra power orange Sprinco spring and a 5.3 oz weight.... I'm hoping this will bring it back to equilibrium... allowing some tunability... but, I should've just taken my 5/64" drill bit and wallered out the hole just a smidgin.. now, I've got too much gas running through the system... Parts arrive in a week... hoping for successful results 🤙🤙 What do y'all think about all this?? Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted November 13, 2022 Report Share Posted November 13, 2022 4 hours ago, SolidBuilt said: full bleed off Were you ever able to adjust the bleed off far enough to stop function? I was never able to get the bleed off side turned up far enough to stop function on a 308 like the directions call for. You should be able to use the restrictive setting side to adjust your gas down. Quote Link to comment Share on other sites More sharing options...
SolidBuilt Posted November 13, 2022 Author Report Share Posted November 13, 2022 (edited) 8 minutes ago, jtallen83 said: Were you ever able to adjust the bleed off far enough to stop function? I was never able to get the bleed off side turned up far enough to stop function on a 308 like the directions call for. You should be able to use the restrictive setting side to adjust your gas down. With the factory 5/64" gas port, It would short stroke at 18 clicks which is essentially fully opened... any additional clicks to allow bleed off only decreases the gas... Now, With the larger 3/32" drilled out gas port, I can't get it to Short stroke (stop functioning) at full bleed off/ 40 clicks... thats why I'm going to install the 5.3 oz buffer weight and increased power orange Sprinco buffer spring... I want to be able to have enough adjustability "range" to get it to stop functioning with enough bleedoff... (in case I switch to hotter ammo...) . 👍👍 Edited November 13, 2022 by SolidBuilt Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted November 13, 2022 Report Share Posted November 13, 2022 21 minutes ago, SolidBuilt said: get it to stop functioning with enough bleedoff I'll be following along to see if you find that combo I started too small on a port but went up in small increments till I got reliability with all types of ammo so I wasn't terribly over-gassed, still couldn't get the bleed-off to stop function. Quote Link to comment Share on other sites More sharing options...
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