I started loading for the 308 Winchester this week. I am loading 150 grain Hornady interlock with IMR 4064 using Prvi Partizan brass. The cartridge length per the manual should be 2.800 per the manual. I finished at 2.745" as required per the cannelure groove. I started with the minimum of 43 grains and loaded up in 1 grain increments to 47 grains. 47.7 grains was the max listed. The starting load seemed lightly compressed and the last load felt heavily compressed. The powder was almost .25" from the top of the case. Has anyone else had a similar experience? I assume it would be safe to shoot my loads starting at 43 gr and watch for pressure signs.