My new Ballistic Advantage 20" DMR fluted barrel

[Randy99CL]

I bet there is a huge drop-off in barrel pressure between when a bullet has just left the case and when it has passed the gas port.

Edit: I can see myself holding the gun where the forearm would be and carelessly getting a finger over the hole. That's the kind of luck I have sometimes.

[bj139]

I bet there is a huge drop-off in barrel pressure between when a bullet has just left the case and when it has passed the gas port.

The same as any AR15 with the same gas port length.
Do you think the BCG will hold back all the pressure?
Besides, this is a rifle length port which is 13" from the breech.
It is more similar to a ported barrel than you think. Even better than the group buy 12.7" barrels.
In fact I notice an EXTREME REDUCTION in muzzle rise when I shoot it uncovered.