xausa - you, of course are quite correct - the 6.5x57 is an excellent ctg.
The 6.5x57 IMP, even better & should have the same capacity (60gr.) and ballistics as the 6.5x/.284. Mine did, even though it had the front end of a .260 Rem. producing 3,308fps with 120gr. XLC's & accuracy at 5 in 1/2"@100meters.