Today was overcast so I hit the range again to re-chrono those loads since I got garbage readings the other day:
FF bullets were shooting 2687fps with an SD of 16fps
SF bullets were shooting 2655fps with an SD of 9fps
The SF bullets shoot slower but have lower deviations (the ES for the SF bullet was the same as the SD for the FF bullet) but I would assume that has largely to do with my sizing and seating consistency. The SF also shoot a little bigger groups (.625 MoA compared to .3-4 MoA for FF) but who really cares.
Did anyone get me a LabRadar for X-mas?