Thread: Trying something, Eric Cortina method of load development

Great idea, thanks. I was a bit concerned about the difference between jam length and projectile toucjing the lands. Interesting that Cortana says back off 15 thou from jam. Projectile definately going to be touching lands still. What's hard case is; I shoot the old Norma 150 grn soft point spire point, under minute of angle easy. Using a cleaning rod its COAL length is 3.100. I've actually got it seated at 3.130. Absolutely no pressure. So I guess the lands jam is the way to go. I've only ever used the guesometer, close enough is good enough. I'd only accept MOA or less though. I wonder what's going to happen with a bit of science. Thanks dannyb