sierrabullets.com Load Data

Is anyone finding that the load data from sierra is very conservative? I’m looking at the 6.5 prc data and their max charges only go up to 2800fps for the 150hpbt match bullet. It seems everyone posting velocities on their loads for similar weight bullets go faster than 2800fps.
 
Yeah. I’m looking at their 300 WSM data with R26. This is probably one of the first places I’ve seen R26 in a manual for this round. I’m messing with it right now in a 20” barreled gun with bullets weighing 200 and 210 from Nosler and I’m already at 2 + grains over their listed max with no pressure signs. Seems pretty conservative on their part. Heck my starting loads are close to their max listed loads.