Whats the easiest way to one-time delete a block of records?

I have a table with lots of records and a unique sequence #.
This Seq# is the only field available where I can identify the block of records.
I can’t use Bulk Delete, in the back-end mgmt tool because it doesn’t allow filters.

Lets say I just need to delete a range, like Seq# 500 thru 1000

Thx
J

@jaymer A script would be the easiest, using any of the following