Home Forums Hunting & Shooting General Big Game What's Your Favorite 338 Winnie Bullet?

Wonder how he arrived at that? I assume he's pressure tested his loads?

I doubt it...

SAAMI lists Max Pressure with the 338 WM as 64,000 PSI. While there is no direct way to translate that to CUP, it's roughly 53000 CUP.

Here's some actual pressure tested data to chew on...

FROM HODGDON NO.26 1992 (24" BARREL"):







THE "NOTORIOUS" BARNES N0.1 1992 (notorious as it's some of the hottest data ever put in print) 26" BARREL:



SPEER NO.11 1987 (24" BARREL):



SPEER NO.12 1994 (24" BARREL):



NOSLER NO.5 2002 (24" BARREL):

[img]http://img.photobucket.com/albums/v312/brad300wsm/Nosler-no5-24in_zpsmhcglylp.jpg[/img]

CURRENT ONLINE ALLIANT DATA (24" BARREL):
*Alliant RL17 Data gives a 250 2,664 fps w/ 66 grs MAX load*

[img]http://img.photobucket.com/albums/v312/brad300wsm/current%20alliant_zpsrkqvd4hh.jpg[/img]

CURRENT ONLINE HODGDON DATA (24" BARREL):

[img]http://img.photobucket.com/albums/v312/brad300wsm/currnet%20hodgdon_zpsecwvcw77.jpg[/img]

As you can see, nothing comes close to 2,850 with a 250 grain bullet from a 24" or 26" barrel.

Again, these are pressure tested loads. You can go to Western Powders (Ramshot) website and look at their data... you'll find the same.

I especially like the Hodgdon data because they list actual pressure.

My experience with the 338 WM is it's one of those rounds that gets routinely hotrodded. Guys think it should be faster, and therefore run it to meet their expectations, not its reality.

I struggle to fathom how a 250 grainer at 2,650 to 2,750 is a bad thing, but I'm conservative by nature.

Again, I've loaded for 5 338 WM's... my findings pretty well are mirrored by the published data shown here. I started loading for the 338 WM around 1990, which correlates with the same time I got a chronograph.