How far is it to Corby?

Although another US name (a la Bradford Bulls, aka 'Dulls'), how about 'Steelers'?

You need something that is instantly recognisable unlike for former Whitehaven Warriors, which was also taken by Wigan (and loo which club has prevailed). Look at my club - Keighley Cougars; which is always referred to as 'The Cougars'.

Whatever name you select, it needs to roll-off-the tongue and must fit easily into a chant.

Good luck with whatever name you finally select.