Out at the range today shooting among other things my scout scoped M44. I was getting good groups (for me) at about 1.5-2 inches at 75 yards using some Polish ~'86 manufacture surplus steel core light ball ammo. The cases and bullets are brass colored but the cases seem to be steel. Several of them had splits along the neck, but not all the way to the tip and to where the larger diameter part of the case started . What does this signify with respect to safety, accuracy, to my gun and my ammo? Thanks.