Are there problems with Selliot & Bellot, Wolf, I.M.I. & Fiocchi ammo?

CIP rated shells (EU standard) can be hotter than SAAMI-spec ammo (the US standard) but not always. On problem with the Highpower is that it is light for an all-steel 9mm full-size gun (roughly 35oz and every ounce on a handgun counts). and some parets are ratger small and not beefy at all. "Full power" (NATO spec) 9mm is hard on a Highpower, I shor Finnish mil-spec 123gr (1963 surplus!) and hot Norinco 9x19 and my FEG PJK-9 got battered and there was one primer blowout. Even though the FEG is a poor man's Browning, the same thing will happen to the real mccoy. In the 1970s(?) Israel had FN make them Highpowers but the slides were beefed up to withstand a lot of practice with the hotter mil-spec 9mm. Stick with 9mm rounds that give you 1000-1150fps at muzzle in your Highpower. Mil-spec 9mm is hot enough to cycle a sub-machine gun or 9mm AR-15. I ordered some IMI .38 from J&G Sales and the shells were lousy (white oxide was on the lead), Nothing is wrong with Wolf ammo as loing as you use it in an Eastern European rifle/pistol. Only avoid Wolf centerfire on Western manufacture guns that use br cased ammo as a standard.