7mm WSM Powder Recomendation

[tm7554]

Gents,

Just started with a new model 70. I want to shoot Horandy 162 SSTs. Can you guys give me a powder recommendation? I've experimented a little with RL-17 and I really don't have enough time behind the gun to form a great opinion. I've worked up to 60 grains and i'm seeing the string average around 3100. Accuracy seems fine for the first 3 shots. The groups did open up after that but i suspect the sporter barrel on this extreme weather is the reason. After doing some research it seems a lot of folks think that RL17 isn't the best powder for this cartridge. I'm looking for a few recommendations.

 

[Trickymissfit]

Gents,

Just started with a new model 70. I want to shoot Horandy 162 SSTs. Can you guys give me a powder recommendation? I've experimented a little with RL-17 and I really don't have enough time behind the gun to form a great opinion. I've worked up to 60 grains and i'm seeing the string average around 3100. Accuracy seems fine for the first 3 shots. The groups did open up after that but i suspect the sporter barrel on this extreme weather is the reason. After doing some research it seems a lot of folks think that RL17 isn't the best powder for this cartridge. I'm looking for a few recommendations.

try MagPro
gary

 

[reeldawg]

Mine liked H4831SC

 

[Red Beard]

With 168gr pills mine liked IMR7828ssc.

 

[IanB]

Rl 22

 

[JeffVN]

For the Heavies (180 Berger) I have run everything from RL-25, Retumbo, H1000, and H4831. For the lighter pills, I have seen folks use H4831SC, RL-22, RL-19.

JeffVN

 

[webs]

I have a build finishing up in a week or so and will start out with H1000 and Retumbo with 168 grain Bergers.

 

[redgun]

My rifle likes H1000 w/ 180 gr Bergers. 3050 fps with sigle digit SD.

 

[alaska]

RL 17 and 19 with Win 760 are good powders for the 300 WSM but my 7mm WSM my powder is Win 780 or H4831sc with 160 to 175 gr