Good eve. to all, and thanks for the forum. Last wk we picked-up a Bushmaster .223 from Cabelas; including a set of RCBS dies for it. New brass and 55gr V-max. The press is a Hornady Pro-7. Problem comes from the seater die. As it straightens the bullet into the brass it shears off about 5 % of the nylon insert. I don't think you can get accuracy with that happening. I have swelled the head to max and it still takes a bit. Should I try for another brand of seater, or ?? Sorry to be longwinded but tried to answer what might be a question. Thanks, am thoroughly enjoying the forum. JC