I used to live in WA. If you live there read the laws. They are very clear about them and even list what can not be used. Handloads is not one of them. You also can not be put on trial unless you broke a law. If you have broke no law and do go to trial then the state pays your lawyer, lost wages from your work and for your time. So they make for damn sure they will put you behind bars if you do go to trial, and that only happens of you break a law.
Ayboob tells you to not use handloads and when you flip the page there is a full page glossy ad with the latest over priced defense ammo. He is in it to fill his pockets. He also can not provide a single conviction for the use of handloads. All he is looking for is to fill hos pockets with cash after he scares people into looking at them full page ads. Nothing more.
If, and a huge if they ever question you loads in a legal shoot you will have plenty left on ou they can look at, take apart and shoot all they want. Still wont change the facts if your shoot was a legal one. He feeds fears for your money, dont losten to that fool.