338 LM COAL Questions

P7id10t

Sergeant
Full Member
Minuteman
Dec 17, 2012
405
2
61
Portland, OR
Took measurements on my Savage 110BA chamber where I split the neck on a fire-formed casing, inserted a bullet and ran the bolt home.
Here are the absolute maximum measurements for the bullets I have in my stock:

BulletWeightCaliberMax COL
Hornady Int SP225338LM3.6360
Berger OTM300338LM3.8830
Lapua Scenar250338LM3.6460
Lapua Scenar300338LM3.7110

<colgroup><col><col><col><col></colgroup><tbody>
</tbody>

My AI Box mag is 3.771 inside edges

I was going to do some ladder tests with the Berger OTMs and Scenar 300s, with both different powder charges (RE22 & N170) as well as different COALs.
Figure I'll start at 50 mils back (0.050") off the max COAL and move in 10 mil increments. The Bergers will definitely have to be single shot hand loads.

Would you do anything differently? Open to suggestions.
Thanks