Thread: Powder crackling when seating projectile

Just working up some new .300 Blk loads using 168 gr amax over 2205.

ADI website has max charge at 17.2 gr for a 168gr HDY hollow point. Note I don’t have the projectile from the data but it is the next closest one.
Trim length and COAL are as per the data.

At 17.0 gr when seating the projectile I can hear the powder granules crackling like they are going under a steam roller.
The change is sitting at about the case shoulder, below the neck. The boat tail of the projectile going about .17 / 4.5mm into the charge.

Is this sound something to worry about? Are the granules likely cracking into a different burn rate or more likely just finding their place in the case?.