I picked up a box of Nosler custom 120g Balistic tip in 6.5 x 284, mainly for the brass. When I opened the box they looked awful short. I pulled out the calipers, they measure 2.890. That's a far cry from 3.228 as listed in all the manuals. Curiosity had me then and I checked the only other factory rounds I had 22-250 and 243, both those were right on the money. Why did Nosler load these so short?