I had problems with my Knight Vision shooting BH209 powder. Kept getting miss fires and didn't know why. I ended up getting with the factory and gave them all my info. They said for me to use another primer and supported the CCI and Federal primers. They told me that the standard Winchester 209 primers were the coolest of the bunch. They said that the powder needed a hotter flash to ignite. I think the BP had something to do with problem also.

BH209 can be a finicky powder. I had to replace my CVA BP in my Apex to remain reliable. I do like the powder and will keep using it though.

Since going over to the other hotter primers, I have not had one problem.