338 RUM load data needed

IDShane

WKR
Joined
Jun 12, 2022
Messages
403
Location
Meridian
I had a 338 RUM built last year and I have been struggling to get a load together that will work. I have tried Barnes 265 LRX with 4831SC no real luck there and Nosler 265 ABLR with both N570 and H1000 with no real consistency. I really want this gun for Bear and Moose hunting so I am looking for a heavy bullet preferably a bonded bullet but I am willing to look at options.
 
I’d try with with a standard bullet next, 210 or 225 TTSX. Try the 7828ssc with it, maybe try those same weights with Nosler partitions or ABs as well. Start with the low end of the load data. You’ll have plenty of speed and the 338 probably doesn’t have a bullet weight that doesn’t work for bear or moose. I’d also be curious if there is a factory load that your new build likes.
 
Not totally apples to apples, but my 340 Wby had similar issues with Nosler bullets (for some reason). A switch to the 225 TSX unlocked sub-moa accuracy and blazing speeds. I have also come to see the 4831's might actually be too fast for the big boys. They work, but you don't get all you paid for with speed. 7828 has been my default with H1000 a close second.

Maybe give that new Ramshot Grand or Staball HD a look?
 
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