Bulk copy replication speeds depend on multiple factors. If the destination database is on a SQL Server server, you may be able to improve performance of bulk copy replications by enabling the BULK-LOGGED recovery model for the database. The BULK-LOGGED recovery model uses the Select Into/Bulk Copy functionality, which allows non-logged operations to be performed. Refer to the SQL Server Books Online or other SQL Server documentation for more information about setting and using recovery models.