I had never heard of Parabellum Research until I saw it on the spreadsheet that was linked from this forum. https://docs.google.com/spreadsheets/d/1gex6ItGeWQunVZR9B14mseacyEGoreRRrBEXZavfciM/edit#gid=7  They no longer carry the Beartooth hardcast, but do have a  200gr FMJ.  Does anyone know if their FMJ is built cup and core or is it fully enclosed in a jacket, not simple plating. Has anyone sectioned  the bullet to see how heavy the jacket is? Thanks

Ennis; Here you can see the bullet better as it is unloaded...
http://10mm-firearms.com/factory-10mm-ammo-pull-downs/parabellum-research-pbr-200-fmj-premium-22015-pull-down/msg39818/#msg39818