Got a little confusing chrony data that I need some expert eyes on. Shooting 6.5 Creedmore using a Hornady 147 ELD and 41.3 grains of H4350 (previous ladder indicated a node here). I was trying some varied OAL's to see if there was a best OAL for precision group, shooting 5 rounds at each OAL, and as the OAL increased, the velocity also increased. Shouldn't it be the other way around? I thought as OAL increases, pressure decreases and velocity decreases? OAL Mean Velocity fps SD 2.795 2652.0 7.9 2.810 2659.5 15.0 2.830 2682.3 12.0 I did shoot the OALs in this order, so the only thing that I thought of was that the barrel/chamber might have been warming up? Shot these three strings over about 20 minutes.