Hey mate.
Mine is the Sinclair hand primer which I've found to be very good and precise, easy to use. I'm really careful to ensure they're seated consistently because my OCD nature. 😊
Sounds like you're getting things sorted. It'll be a good area once it's all gtg and inside the house too. My stuff is all in my workshop which is external from the house. Still, it's set up well, has what I need and is a good place to hang out.
I bet you can't wait to get that .22-250 zinging. Bloody good calibre that. Some Pew community posts so hope.