I'd suggest trying Federal Premium, for deer you don't need a Partition but the Accubond's and Ballistic Tips are very consistant, you have to try different loads and see what your gun likes best. Most 30 cal rifles tend to like 180's from what I've seen though.

I shoot 180gr Nosler Accubonds- they give me an inch at 100 yards and two inches at 200.

I"m not sure what scope you have, but Kimber is a GREAT rifle and they are very accruate.

I was goin try some Federal 165 Nosler Partition from mine but all of my previous rifles in 30 caliber likes 180 grains or more bullets I currently use 180 grain partitions but thinking of trying 180 acubonds also check out www.midwayusa.com I never knew there were some manyfactory loads availablein the 300 WSM