All of my HW springers seem to really like the H&N Field Target Trophy.

If it's .177, try the Trophy, Baracuda 8, Baracuda FT, JSB Exact (plus the Express and RS versions).

If it's .22, try the Trophy, the RWS Superdome and SuperField plus the JSB Exact Jumbo (plus the RS and Express versions).

As above, always a good idea to check the output of the '80.

Enjoy.