Wrong, the three die set has a depriming/sizing die, a charging die that bells the case mouth to make it easier to seat the bullet and the bullet seating die. There are two things that are probably going on here...
1. ) The charging die is set too deep producing a pronounced bell, and
2. ) You don't have the seating die set for any crimp.

What you want to do is back that charging die out until it just barely bells the mouth, you should just barely be able to set a bullet in the case mouth and it will hold it.
You also will need to adjust your seating die by using a factory loaded round that you know will feed in your gun. To do this back the seating plug out and back the die out of the press several threads, then insert the loaded round and lift the ram to the highest position and screw the die in until you feel it touching the case mouth and tighten down the lock nut. Then screw the seating plug in until it touches the bullet. From there you can screw the die in 1/4 turn at a time until you get the desired amount of crimp to allow reliable feeding.

For 45 auto I like to use a light to moderate crimp, for 38 and 357 they get a fairly heavy crimp.