The Peg no.1 Carp pellets (P1CP6) are ideal for this.
They are a very nice uniform size and shape meaning they catapult out in a tighter area and have an even sink rate.
Peg No.1 also do a Black Squid & Krill Carp pellet (P1BCP6) which is great as an alternative to Standard pellets.
Also since it is a dyed and flavour pellet it is a little heavier so catapults further too.