I have a set of LEE's that I bought when I bought my 44-40 ( Rossi ) I use 427098 I crimp "ON " the front edge of the driving band to get OAL ( close counts ),, if I roll crimp in the grove ,, mine crimps just below the top edge of the driving band , not rolled down in it , if you crimp to hard the case will get a bulge and the bullet will twist in the case ( took several tries to get it right ). I have a new FCD,, "some where ",, I bought some once fired cases crimped w/ FCD , took a couple loading to fix'm .
coffee's ready ,, Hootmix.