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To Lonewulf; yes that works, but I prefer the tool. For one thing, projectile nose tips vary somewhat so the result is not so reliable between bullets. However the Hornady tool measures OAL length on the ogive using calibre inserts.

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Measuring on the ogive with a Comparator is the only good way to establish correct OAL.

Although, it's fair to say the polymer tipped bullets, although the plastic nose may vary slightly, it's nowhere near as much of a variation as with exposed lead tips.

Some interesting info there kiwibloke, it won't be long I hope before I can get to the range to establish what my rifle is doing..at least from the loading point of view, but as to chronoing the loads...may take somewhat longer now, a friend just shot my chrony! right through the middle.
Cheers.

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Well, for what it's worth, I'd say yes and no. Whatever method you use, all you're really doing at this point is establishing a max overall length for the seating of a particular projectile in a particular rifle. That doesn't mean the rifle will shoot accurately with the bullet so positioned, just that this is about as far as it will go. Maybe your rifle will like having the projectile seated out to the lands and maybe it won't. The only way to find out is to shoot it.

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