02-08-2023, 09:28 PM
I'm having issues with my rifle being under-gassed and am hoping y'all can help.
It started as a cheap Radical Firearms RF-15 w/ a 16" barrel and worked just fine like that. Then I replaced the barrel with a 22" Satern Liberty SS DF barrel. First, I had extraction issues. That was solved with a new bolt. But now I'm having issues with it being under-gassed.
I've tried every possible fix:
But I'm still getting under-gassed symptoms: constant stovepipes, bolt not locking pack, sometimes not ejecting at all because the bolt isn't moving far enough back.
At this point, the only thing left to do that I can think of is to drill out the gas port even wider. Is this a bad idea?
It is already 0.93" (3/32), which is what it should be for a 22" barrel with a rifle-length gas system. But I'm just not getting enough gas, apparently.
Because I have an adjustable gas block (Superlative arms), I can dial it back down as necessary if I end up getting too much gas. Is there any reason I shouldn't do this?
It started as a cheap Radical Firearms RF-15 w/ a 16" barrel and worked just fine like that. Then I replaced the barrel with a 22" Satern Liberty SS DF barrel. First, I had extraction issues. That was solved with a new bolt. But now I'm having issues with it being under-gassed.
I've tried every possible fix:
- Different ammunition
- Different mags
- Quadruple checked gas block positioning
- Switched to adjustable gas block that is wide open
- Switched to a "reduced power" buffer spring
- Regular (lightest weight) carbine buffer.
- Checked gas key and rings
- Made sure BCG is properly lubed
But I'm still getting under-gassed symptoms: constant stovepipes, bolt not locking pack, sometimes not ejecting at all because the bolt isn't moving far enough back.
At this point, the only thing left to do that I can think of is to drill out the gas port even wider. Is this a bad idea?
It is already 0.93" (3/32), which is what it should be for a 22" barrel with a rifle-length gas system. But I'm just not getting enough gas, apparently.
Because I have an adjustable gas block (Superlative arms), I can dial it back down as necessary if I end up getting too much gas. Is there any reason I shouldn't do this?