Powder for 338 lapua?

[sniperboy]

Hi to all, hope everyone had a good easter.

Can anyone tell me of a powder that will burn fast enough for a 338 lapua in a 25 inch barrel? I am currently using vithavori n170 but i dont think its burning it fast enough.
I am using 300g smk projectiles and the rate of twist of the barrel is 1-10.

Thank you

 

[30-338]

Hi to all, hope everyone had a good easter.

Can anyone tell me of a powder that will burn fast enough for a 338 lapua in a 25 inch barrel? I am currently using vithavori n170 but i dont think its burning it fast enough.
I am using 300g smk projectiles and the rate of twist of the barrel is 1-10.

Thank you

Hey Sniperboy...
I have tried US 869, Retumbo and Viht N-170. The Vihtavuori powder was my go to load and I got good consistency FPS @ 2675FPS ( low spreads etc)...I used 89 grains but I have a 28.5 inch barrel...Now I use Retumbo , 90 g and get about 2750...We switched to Retumbo because we were trying to simplify our loading procedure with fewer powders and using the same powder for different magnun rifles ( Lapua, 30-338, 300RUM ) and we did it! It makes things a lot easier...I think I remeber that Vihtavuori is a temperature "insensitive" powder like the extreme from Hodgdon. BTW Quickload says that with 90 grains N-170 in a 25 inch barrel there remains 1.84% of the powder unburned...IS that why you thought you needed a faster powder or were you meaning a slower powder? Shawn has had good luck using H1000, and has gotten a little less velocity but excellent consistency.good luck 30-338

 

[fenceline]

power

I use h1000 any time i am pushing a heavy bullet seems to work very well.
good enouf to set a new record.

 

[4xforfun]

I have done load development for 2 different Lapuas. The custom job liked H 1000, the Armalite liked RL 25. We were using 250 SMK and Lapua 250 Senar(sp). Niether one liked to be pushed to fast. Groups tended to open up when I pushed them.

 

[BHP9]

92.5gr/H1000 under a 250gr Lapua Scenar or 250gr Lapua LockBase out on my 26" PGWDTI Timberwolf.

 

[Lapua Hunter]

Powder for .338 lapua

I also use RL 25 in myarmalite AR-30...

 

[jlamb]

Guys,

I just got a 338 Lapua also. Thanks for the info. I'm going to create a load for elk first with the Sierra 250grn BTSP, then move to the 300 grn SMKs. It sound like H-1000 is the one.

J

 

[BountyHunter]

MRP2 is more consistent lot to lot than RL25 and is great.

H1000 and Retumbo would be my next choices.

BH

 

[Broz]

MRP2 is more consistent lot to lot than RL25 and is great.

H1000 and Retumbo would be my next choices.

BH

Have you tested MRP2 as far as velocity change in temps from 0 to 80 dregees?

Just wondering.

Thanks

Jeff

 

[highridge1]

I have had alot better results with RL25 than H1000. Better velocity,accuracy, and conistent in my 338 edge.In fact the new lots of H1000 are so wacked out I won't touch it again...