I have a c. 1942 Luger with some parts replaced but in good, shootable condition. Although my initial outing with the pistol produced good results, the Luger rapidly became unreliable. I have had failures to strip a round from the mag, stovepipes, and failures to feed in which the nose of the round gets stuck on the feedramp. I have been firing Blazer ammo. I have heard that Lugers were made for hot 9MM ammo. Should I try some livelier ammo? I have some Fiocchi, for example.