Thread: Trying something, Eric Cortina method of load development

RCBS make a calibre specific seating guage. Bos had a .270 win one for sale here recently. The hornady system above is more flexible if you shoot multiple calibres and you can thread your own cases for a custom chamber fit (and save a few dollars). Calibre specific collars are not expensive.

Moa there is a bit of variation in projectile length due to tip condition etc. So if you looking to make small adjustments it might not be so accurate working off total length. Working off the shoulder / contact point (ogive?) should be more accurate.