I have been wondering about the guns that use 209 primers and won't shoot BH, maybe they would shoot more accurate and consistent if the ignition were tuned up.
As for the male cow fertilizer about the primer pushing the round up the barrel before the powder ignites, I think that is disproved by the fact that some of us are shooting the hottest primes we can getand shooting good groups. I have posted a group that was around a 1/4 inch that was shot with CCI mag 209's if the round was moving from the primer then we certainly would not get good groups let alone under 1/2 inch. Lee