8 gauge reloading questions

[David Noble]

I purchased 125 new unfired Remington 8ga industrial hulls about two years ago. I didn't have a 8ga gun at the time but figured that would be a good incentive to get one. Anyway, I ran them through a set of CH base swaging dies (3) that came with my gun that I got about 2 months ago. That went fairly smooth but I had three that the brass step peeled down during the sizing. I was able to peel the overlay off of these three and save the hulls. The swaging process is way easier than peeling the overlay off but I noticed it caused the plastic in the primer pocket to shrink by about 30 thousandths in diameter. Should I drill out the plastic to the correct size or just force the primer in?
Also the hulls are 3 1/4" as are the chambers on my gun. I don't have a loading press for 8ga so I plan to load them by hand initially and roll crimp them.
Does an over shot card used with a roll crimp disrupt the shot pattern to a degree that makes using a six or eight point crimp better?