338/300 WSM Loading

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muzzlebrake

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Jan 18, 2009
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Texas by god!
I don't see much on this one. I had one built on an A-bolt stalker a few years ago and have really enjoyed it. It has been my main go-to gun for hunting.
Everything ever shot with this has died in it's tracks--not even a step.
When I first started loading there was no data available so I took some Lazzeroni load data for their Galaxy and reduced it by 20% and then started working back up. I finally ended up with 180's at 3240fps and 200's at 3050fps in the 26" Shilen barrel. My hunting loads are 185 Barnes at 3000 and 66 grs of W760 or H414.
Today I was looking at load data for the 325 WSM and the data looks almost identical to what I have been loading for the 338.
I have used several different powders with good results, H414, H4530, IMR4350, 4831, H1000, H380, RL19 and some of my treasured AA8700.
There used to be some info on the old Shortmags.org site that no longer works.
Hope this helps someone with this early WSM wildcat hunting cartridge.


He who dies with the most toys wins!
 
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