Nice groups. I've been shooting my new 452 Lux off the bench (or in my case, a convenient round bale near my range since I can't prone with all the snow) and getting similar groups (but larger, open sights and using my arm as a front stand) with both federal and blazer. It seems the federal is a lot better in the cold weather... maybe something to do with the lube getting cold.
Only have about 300 rounds though the rifle and love it (even with the stock sights I am getting)