What are you using for a bullet aligner when you seat the bullets in the rifle?? Some bullet aligner's do not fit the bullet tip. Some impact the petals, and could be tearing the petal's. You could also be seating the bullet's improperly.

IMO alot of damage can be done to bullets during seating, and again IMO seating is very important to accuracy. I use a drill stop on my range rod to determine seating depth. The drill stop makesthe exact seating depth every time. Tom.