I don't know about ammo for semis but I know I won't trust it for a revolver. I don't think my SW9VE would have any problem with but I still don't plan on buying any more . I only have 7 more rounds of the Monarch 158gr 38sp and then as I stated I am done with them. Been using Blazer and so far no problems. I can not afford the really expensive SD ammo. So I buy what I can afford. And if I do have a ammo malfunction I would rather it be at the range and not where it is my mine or my families lives are at stake. It just seems disturbing that a ammo manufacturer would not make sure their ammo was in better condition seeing how it could be someones life on the line.