Regarding the reason to push to 940 - Goal is to get as much energy as is reasonably possible into the projectile for bowling pin matches. I realize that a flat nose or hollow point would be a better choice - but have a bunch of the round nose so thought that I would use them for a while.
At the never exceed loads in the Lee manual, lead and FMJ velocities are 934 and 942with resulting pressures of 20,100 and 19,800 respectively. The Saami spec is 21,000 psi Maximum Average Pressure. In the data sent from Speer, the velocity using accurate #5, which is very close to CFE Pistol on the burn rate chart is 982. The theory then is that if the plated bullet does not result in higher pressure to achieve the same velocity with the same powder and OAL as lead or FMJ, then I should be able to push safely to about 940 fps. The other data point is that the Speer data shows about a 5% higher velocity from a powder that is close to CFE Pistol on the burn rate chart. Not sure whether this should give some level of confidence that pushing to 940 is a good idea.
By the way, how do you determine the relative pressures of different loads?
Thank You