0519 is the number for our original notified body (for CE assessment and approval), however we have had to move to another notified body 0163 since Brexit. You should see CE 0163 CE mark on all recent production.
Yes, our lot number is first, then shift code letter, then pack date.
And yes, we are still in business and shipping large amounts of powder. As dry as the market is for powder right now, plus all the other various forces acting on the supply side, it may seem like we are not shipping because local shelves are thin/bare. We wish we could increase production to sate everyone's appetites right now, but that is not feasible and open to debate (by me anyway).
Please be patient, as we are in this for the long haul. Like TP and other various household supplies that caused panic last year, powder, primers and ammo production/supply will catch up to demand... eventually.
Thank you to those that buy our powders.
Paul