In my K-22's icna shoot ca 200 rounds of SV ammo without encountering any problem - never attempter to shoot more than about 200 rounds.
With my S&W 617 I routinely shoot 300 rounds at the steel challenge matches using HV copper washed ammo - no ejection issues but is does require quite a bit of cleaning especially the ejectioin star and under the ejection star. The Federal bulk ammo is cleanere than the Remington Golden. Above all I avoid the plain lead HV ammo which has tendency to lead the barrel.