Those book numbers are very nice. I haven't been able to match their book numbers. Ex: with the 200 Hot Cor they list 52gn for 2725. I get 2620 with 52gn at 2.81 and a Fed 210 primer. Granted its a 22" vice 24" barrel that I'm sure they used, but that's a big difference. I did just notice today there was a large difference using the 215 primer vs. the 210. 52gn of 2000MR with a Nosler 210 Partition I got 2625 with the 215 and 2583 with the 210 primer (all are three shot averages corrected to muzzle velocity). Everything else the same. Let me know what you find out. Could be a very good combination.