I picked up some ammo this afternoon for my PC Shield and noticed a warning on the back of the box stating not for use in a ported or compensated barrel. They were Blazer Brass FMJ. A bit of research revealed the likely cause was the thin plating used on the projectile that could shear in the ports. My question is this: what ammo would you recommend for general practice/range use for a ported barrel? What should I look for? Thanks!