Range Report 243 load ?

killer-e

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Minuteman
Jul 31, 2010
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odell nebraska
I recently purchased a 243 and started load development based off some things that I read on here started at 41.5grs of h4350 come to find out it’s way over book Max hodgdon online manual says 37.5 is max It shoots really well primers look good don’t know what to do would you use this
 

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I would back off. Here is the page from the Berger manual.
The Berger manual one of the most conservative out there, they will tell you themselves, all data QL generated, and they stopped short.
Hornady manual lists 41.9gr of H4350 for their 108 ELD, 2.700" OAL, not the same bullet of coarse, but a bullet with more bearing surface than a hybrid.
 
I just looked at hodgdons website, and it seems very conservative for the 243. If you look at past threads on 243 loads, there are plenty of people that are running 42+ gr of h4350 with 105's and heavier bullets.
 
Here is an old 243 thread that has some good data.
 
I never noticed how low all the max charges were for the 243, until I saw your thread. And I was thinking there is no way that it's that much lower than the 6mm Creed. Especially since the 243 has more case capacity.