I've built several 22 Creeds. They are just awesome! 80 gr and above do wonders on game. Longest kill shot has been 800 yds with an 88 ELDM. The 80 gr Sierras do great also
It is not unusual to have a barrel speed up in the first 80 to 150 rounds by an average of 40 to 50 fps but I have had barrels increase speed by as much as 140 fps it's not typical but it does happen.