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30-378 Weatherby - IMR7828

disdp1

Private
Full Member
Minuteman
Aug 18, 2012
22
0
63
Green Bay, WI
Hello,
Haven't seen any load data for this caliber so I thought I'd post what I've been working so far and maybe get some additional contributions.
I've been out only a couple of times due to lack of range options here in upper WI (Shiocton under major revamping, Machickanee closed due to idiots putting targets in trees and holes in houses a mile away).

Power - IMR7828
Bullet - Hornady BTHP 208 grn
Case - Norma
COAL - 3.824

First time out ran the load up to 93 grn w/ the temp at 18 degrees. Velocities were in the 3030fps speeds. Bumping the load up to 93.5 started showing pressure signs where the bolt was hard to open.
Recently out shooting, 92.6 grns yielded the max load at 3057fps at 70 degrees.

Since I shoot exclusive Hornady rounds I've been happy w/ the results. For the most part, I'm shooting a single MOA with a periodic group going 3/4 MOA.

If you have any load data, I'd love to hear and compare against my results.

Regards,
David