.338 mag powder

[wisconsinteacher]

I have to stop by the sport shop so I am going to get some powder for the .338 win mag. I have 200-215-225 grain bullets to test. What should I start with?

 

[SJB358]

My number 1 go to powder for the 338 is RL19 hands down. Tried H4831SC and IMR4350 and RL19 beat them both in accuracy and speed. I think if you give it a try, you will like it. From 180-250's it has performed really well in my rifle. Scotty

 

[Richracer1]

I too am using RL-19 with the 225AB.

Here's my load:
225AB
73gn of RL-19
GM215M
Brass - Win trimmed to 2.49
COL - 3.36"
Avg velocity - 2784 FPS

 

[Oldtrader3]

I would give H4350 or IMR 4350 a look also. I used both for 35 years in a .338 Win Mag and I still use IMR 4350 for light bullets in the .340 Bee.

 

[JD338]

I would start with RL 19.

JD338

 

[R Flowers]

I have been playing with .338 Win Mags for some years now. My go to powder is H 4350. I have shot RL 19 some, and it works well, but for some reason it shoots better with a standard primer, not a magnum primer.

The .338 Win Mag is so flexible that it generally shoots well with IMR 4350 , H 4350, RL 19, H 4831, etc, etc.

For heavy bullets IMR or H 4350 or RL 19 do best. For light bullets (200 grains) IM 4831 has been the standout powder.

 

[TRIC]

RF, let me throw out another option. Have been using RL22 exclusively in my 338 Win Mag for several years (several = 10+). Good speed and accuracy. I have no reason to change. I use RL19, H4350 and H4831 in other calibers, all good powders. Give RL22 a try.

 

[jmad_81]

Ramshot hunter showed great promises in my 338 with the 225 AB.

 

[FOTIS]

RL19! and IMR or H 4350