I can't answer for Seafire, but in my own use, keep in mind that Blue Dot generates RIFLE pressures. Some pistol primers are just too soft, although in small rifle cases they can work really well, just enough spark for good ignition without the primer blast moving the bullet before the powder starts to generate power.
For me, I use small rifle primers with BD. I have a box of Federal pistol primers that I have been using with a Fireball load, with excellent results under Lil Gun and 4198. I forget the number on the primers, but they're just primer primers, not magnum, not match. The cups get flat but no cratering.
If you want to try pistol primers, I would start with those that are recommended in snorty pistol cases, like 357, 357 SIG, 41 and 44 mags, the pistol calibers known to generate stiff pistol pressures. Something that's recommended for say, 25ACP, probably won't be able to handle Blue Dot.
