I have a friend that has been using Federal 209a primers with his Blackhorn 209 for a year or so. Somebody he talked to recently told him to try the CCI's (M209 I think?), saying the Fed 209a was too hot of a primer?

I'm no Blackhorn 209 expert (I have never used it), but I thought "the hotter the primer the better" was key when using Blackhorn 209???