I currently use Federal pistol primers (100?) in my K-Hornet. I am curently burning AA1680 to launch 40 V-Max bullets. I have used Rem 1-1/2 and Winchester SP. Also, I've tried Fed 205, CCI, and Rem 6-1/2 rifle primers. All the pistol primers work just fine. I got better accuracy with the pistol primers in my early tests and stuck with them.
The only surprise with any pistol primers was that the high velocity standard deviations I experienced with Lil' Gun, with all primers, did NOT appear with the Winchester small pistol primers. Niether did the high velocities. Could have been a fluke, but that's what happened. Win SP primers with other powders - same velocities as with othe primers.