Thread: Full length sizing issue

Hoping someone can help with this. I had a Lee Turret press that I used with Redding full length sizing die. It was working okay but I was getting abit of varioation with shoulder bump. So I have perchased Redding Boss press to try and gain a little more consistency. I am trying to set this up now. But... If I wind the die down on to the shellholder, which I assume woudl give me maximum shoulder bump, I am getting no shoulder bump at all and in fact my cases are increasing in length from 1.6340 to 1.6350.
Can anyone tell me what is going on here? If I wind the die in any further it just starts pushing the ram down.