Not sure if you’re interested in these or not, but a friend of mine told me about these yesterday. They are still very high priced.
https://recobstargetshop.com/product/r209psts-remington-shotgun-primers/
This might not help much, but I have used 1800 of these with no problems in shot shells. One of the guys that I shoot with has used some of their SPP with no problems as far as I know.
I load shot shell and pistol. Your welcome to come and try it out here if you would like. I’m at Suwanee. Call me if I can help. I’ll PM my phone # and address.
We noticed that some powders seem to be worse than others. I do more shot shell loading than anything else. Best thing we’ve found is as already said, strip of dryer sheet hanging in powder jar. I also make sure equipment is grounded and ware pure cotton gloves.