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You need a better seating die, try a Lee.
Naw, just funning you. Your die is fine.
Your bullets are a tad too hard to seat so the seater plug is cutting the jacket. It's really harmless but irratating.
Put a soft radius on the edge of the seating plug as PA Joe suggests. Chuck the seating stem in a drill motor, lay a turn of medium sandpaper around a pencil point and use it to soften the edge of the seater pocket.
And do any seating and crimping in two steps.
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