i sold my 300 sendero to a buddy who guides, they use the 300 and the ammo i loaded. 210 berger. he loves it and the ammo. the 210 berger penetrate between 30 and 33% on elk. they shoot great groups out to 1000 yards. my son inlaw and my son each shot 15 shot groups you could cover with a sheet of notebook paper at 1000. ( i am using 168 accubond in 7mm this year on bull elk... i have shot a rocky mountain bighorn, and another buddy shot a record book mule deer with my 7mm and 168 berger )