Thanks for the help so far guys, I don't plan on taking a shot over 250 yards and it will most likely be closer than 100 yards. The core loks seem to work OK but the last deer I shot I wasn't too impressed with the expansion and it ran about 100 yards till it dropped. Have any of you had any experience with the Winchester 150gr ballistic Silvertips? The few reviews on midwayusa.com seems to be pretty good, and the ammo is less than $35 for a box ( I don't really want to go over $35).