Hey guys,
I was just talking about this with a friend of mine this afternoon. Look at the face of your bullets and see if the "flat" is flat indeed, or an off center 3/4 moon punch.
As far as the flat v. round goes...I also like to shoot BRPC. There was one old guy who would challenge anyone to a match by seating his bullet backwards in the chamber (we seat our bullets then insert the cartridge). He won every time
because he knew something that we did not, and never would have thought of.
I'm so far from being an engineer of any sort, but if it works....
tim