Sure Shot Mc Gee
New member
Promo stands for> promotional ammo. Which is cheaply made ammo usually sold in large bulk quantity having a 20-30% discounted price below retail. I've enclosed a previously commented TFLF thread discussing promo shot-shells ammo for your reading on what some other member disclosed about its~~ manufacturing. Not 22 ammo but I'm sure small bore promo ammo does have its short comings in its manufacturing also.
http://thefiringline.com/forums/archive/index.php?t-129584.html
http://thefiringline.com/forums/archive/index.php?t-129584.html