cheaper than underwood, that is
i have this 200 grain xtp 1250fps zinger coming
$30 + $6 shipping for 50rds
http://www.underwoodammo.com/10mmaut...ntboxof50.aspx

buffalo bore was higher, last i checked.

hornady xtp 180 grain off the shelf is $20 for 20 but muzzle energy is just 1180.
underwood is cheaper AND hotter