Single-Item-Split-System = "Tronc-System" = Big gun = 100 share-points, Opalo amped or similar = 15 share-points.
F.e.:
Team of 3 (2 big 1 small gun), item worth 100 PED

100 PED / 215 x 100 = 46,51 PED (1 big gun) = 47 PED
100 PED / 215 x 15 = 6,98 PED (1 small gun) = 7 PED

Plz don't hesitate to ask, if there should be any questions!
Kind regards!