I used to have a link to the site and now i cant find it, there all the info on it. the previews on there site are great. i think it was somthing similar to the 7mm STW but a littel different. there are using leupold mark4 scopes, with some type of specail target turret that it calibrated to the round there shooting. so it was the drop compensator.

ok i just found it, they are using .284 WRP similar to the 7mm stw.The scope is a Leupold 4.5 X 14 Long Range Side Focus 30mm tube with a 50mm objective

heres the site with all the info http://www.thebestofthewest.net/html/TheEquipment.html