I’m looking at the load data for 175gr 308win and I’m seeing some pretty big discrepancies. The min. load from the powder manufacturer is almost the same as the max load from the bullet manufacturer. The two sets of data are for the same components including the same brand of bullet. I’m guessing the difference is the rifle used to develop the data? The bullet manufacturer used a 26” barrel with a 1:10 rate of twist, which isn’t very representative of most .308’s. I do not know what was used by the powder manufacturer. Is it common to see these kinds of discrepancies for load data?