270WSM What powder to start with…?

[Capt RB]

I just tried Rl 26 in a 270 win with the 140accubond and my ladder got to 3170fps without any pressure yet. I'm going to go up another 1.5 grn to see where it is. I shot a .9 6 shot group over 3 grains of powder at 103yds. I will shoot some groups soon but for now it looks promising.
I would think the wsm should be able to see 150fps more without excessive pressure. Neat thing was my barrel had some carbon fouling not as bad as 3100 and the wipeout overnight showed no blue at all on the patch. An issue with this gun with alot of shooting.
Hoping to find the 145 eld-x and the 140 classic berger under the tree.

 

[SansSouci]

Hi Full Curl,

This might help: Real Guns - Handload Data - .270 WSM

IMR 7828 seems to give extremely accurate results.

I'd also suggest trying H-4831SC. It'll shoot sub .5 MOA out of my 43+ year-old Model 700 in .270 Win.

 

[SansSouci]

H4831 or 4831SC is a good powder for the WSM families and available everywhere. Also an "extreme" powder.

H4831 in either variety gives excellent results in a wide array of cartridges. It's excellent powder.

 

[winmag]

RL-19
Magpro

Both have given me great results

 

[Full Curl]

Thanks for all the replies! Hard to narrow it down much since there seems to be good results with a bunch of different powder options. I've never really done any good testing with Alliant Reloader powders as I've always used primarily Hodgden but it looks like anything from RL17 to RL26 might be worth a look. I don't like the above 70 degree sensitivity issues with Magpro. I have some H1000, H4350, and H4831 on the bench so will probably start there, but would like to also try 1 or 2 of the Alliant Reloader powders to compare.

 

[Radhimself]

Browning xbolt comp stalker

66.6grn imr-4350 fed215 fed brass 110tsx .5"
67grn imr7828ssc fed210 win brass 140ab .3"
64.8 retumbo fed215 fed brass 160nos part .5"

 

[Radhimself]

Browning xbolt comp stalker

66.6grn imr-4350 fed215 fed brass 110tsx .5"
67grn imr7828ssc fed210 win brass 140ab .3"
64.8 retumbo fed215 fed brass 160nos part .5"


Rl17 and imr-4350 are Very similar, load data can b interchanged... It is temp sensitive, as is 7828ssc... Although i found the 7828ssc spee to change, it remains Very tight shooting regardless

Working up a load with 129grn LRX's now.

I rellay like light barnes bullets drivin at high speeds