Lots of RB ?

[tommag]

I have an improved cylinder Mossberg 500 12 guage and a 24" rifled bbl that I have never used. I bought a Lee 12 guage press. The BP manual says to use fold crimp with a BPGS and a brush wad. This combo is too short. I have an old box of Alcan fibre wads, about .5". I added one of those and it was too long, the hull crumpled. I tried cutting one of the Alcans and got an off-center looking crimp.
Do I need an over-shot card, and if so, what would keep it sitting square on the RB?
I have never re-loaded shot shells before, so I know absolutley nothing.

Thanks in advance. Tom

[Blammer]

Just put the RB into the shot wad, and seat it down to the bottom. The RB and wad should be sufficiently tight to prevent the RB from moving, if not just put some cornmeal in the top of the shot column and crimp as normal.