Muzzle velocity Differences between bolt release and cycled round??

[A5BLASTER]

One wonders if you tune the gas system to the ammo, to be as soft as possible, that you may eliminate the violence of the chambering during cycling.

JP-SCS with light spring, low mass carrier, Adj GB dialed way down.

Nope it still does it, I have that exact setup in my 20 and it still happens.

At least my chronagrah still shows that it does.