BCL102 short stoking whit new barrel

[Bazzoka_Joe]

If you measure the distance from the shoulder of the journal, to the far side of the gas port hole, then measure the distance from the far edge of the gas block, to the far side of the gas port hole, you might find a difference. My gas block was 0.050” shorter than the barrels port, causing the port to be blocked off.

You might be center, but you could be too far back.

after shooting when i remove the gas block there is a carbon ring the same size than the gas block hole going around the the barrel gas port, the barrel port is in the middle of that ring if the gas block was covering the port i would have think the carbon deposit would not be all around the barrel port... that thing is rely bugging me lol

 

[tacoblack]

My maple ridge barrel gas port was not drilled properly and allowed very little gas past. I had to drill it out to spec. I am sure you checked this already.

 

[Bazzoka_Joe]

My maple ridge barrel gas port was not drilled properly and allowed very little gas past. I had to drill it out to spec. I am sure you checked this already.

yes i just got back form the machine shop at work i open the gas port to 0.0965 dint have a .0960 reamer i think they drill the same port size for the 20 and 18.5 whit out considering the dew time.
how your barrel shoot and what gas port size you ended whit?