Thread: 6.5x55 seating depth

Originally Posted by McNotty

Correct me if I'm wrong here, but isn't it important to measure to the ogive when working out all these measurements? I know lead tipped pills vary drastically in length, even a lot of the lengths of ELDs I've measured aren't exactly that consistent. @chalkeye do you mean 20 thou? The average reloader will struggle to do anything down to 2 thou.

Yes. Measuring to the ogive is the ideal, but it is much easier to measure OAL, which means assuming a batch of projectiles are identical. Measuring to the ogive means each rifle has only one measurement for all projectiles, whereas OAL varies with projectile type and model.