.338 Norma Magnum load data

[waveslayer]

Anybody have some good load data for the 338 Norma? I will be using 300 SMK's. Which powder and starting load and OAL will help.

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[JMP]

Start with Norma's data until someone who has one can opine (they aren't very common). While it's a very good cartridge, most have stuck with the 338 Lapua Mag since the performance is similar enough. The 338NM is a bit more efficient, but not enough for most to warrant a new gun, which will generally need to be custom.

http://www.norma.cc/en/Ammunition-Academy/Loading-Data/338-Norma-Magnum/

[waveslayer]

Thanks for your reply!

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[LynnJr]

Try some Ramshot Magnum or Retumbo with the 300's
Depending on if you get a slow lot or fast lot RE22 and RE25 are also good powders to try.RE25 is usually 3 grains heavier on the charge weight than RE22.

Here is a standard 338 Lapua next to my 338 Norma Ackley Improved.