Tread warily. They may have cleaned up their act since C-19, when, in desperation I purchased some, but in addition to being generally harder to ignite than any primers I have ever used, they not only did not always ignite, but their brisance was the lowest I have ever seen, and they would not always ignite the powder charge completely in standard load pistol cartridges.
I used up the last batch in rifle only, where they had greater burn time, and the bullets would generally exit the barrel. But not always. Like nothing I've ever seen before.
Good luck,
FJT