I dont have any problem with my hornady dies. The forster are fine too. Note that the seating stem in the hornady is just sitting there. If you jiggle the die around it can fall out of the hole. If this happens and you pull the press it will crush the seating stem. This happened to me, and hornady sent a replacement stem for free. Make sure you check it every time before you use it.
I suspect Hornady is better at making dies than their price suggests. I think the threading on the sizing die is better than the forster. They also offer custom die making service.
I suspect Hornady is better at making dies than their price suggests. I think the threading on the sizing die is better than the forster. They also offer custom die making service.