Many years ago when loading some 38 special wad cutter target loads I ran out of my usual, at that time Winchester small pistol primers. There were no Winchesters available at my local gun shop so I bought a few sleeves of CCI small pistol primers. It's a good thing that these rounds were being loaded for personal use since 41 of the 200 rounds loaded failed to fire, even on the second attempt. During practice this was an inconvenience, during competition it caused my disqualification from the match. I avoided CCI primers for many years because of this. These days I don't purposely avoid CCI's but usually prefer both Winchester and Federal depending upon the application.
I was lucky, during the period when loading components were not available due to COVID. I had enough primers, powders and bullets to allow me to continue to shoot, albeit at a lesser level than I liked, but could still shoot. The one thing that I regret is not resupplying my stock of IMR 4320 before Hodgdon quit making it. My highly accurate 308 and 30-06 match ammo was based on IMR 4320. Still looking for a powder with similar performance and yet to find any. Do any of you have any recommendations?