Cast 44 bullets in the LEE dies

[tacotime]

Loaded some 240gr cast bullets for 44 MAG with the Lee dies.  Never noticed any issues with cast or jacketed bullets loading 44 special in the same dies, but the 44 mag feels rough in the seating die, crimping feels odd, and it looks like it's very slightly shaving the bullet diameter.  The result looks normal, with a moderate crimp. None fired yet to test.
 
These Laser-cast bullets are marked .431 in. 
Is this die just too small for .431 bullets?
 
I think some of these die sets are marked 44 Special/44 Magnum, while others are marked 44 Magnum. Not sure if that makes any difference in regards to length adjustments.

[carlsflh]

have you tryed adj the expander die to bell the mouth of the case slightly larger? i know when i switched from jacketed bullets i had to adj the epander die to put a slightly larger bell in the case so it wouldn't shave lead also i would clean your dies so they are spotless i know when my seating die gets dirty or gumed up it doesn't feel right my dies are 44spl/44mag lee dies