Powder for 300 wsm

Stan Malinky

Well-Known Member
Joined
Jan 15, 2019
Messages
47
Location
Orangevale, CA
This is what I am using for my 300WSM's Good for both Elk and Mulys. Last Elk taken at 387 W/ Range finder 1 shot, Last Mule deer taken at 480 1 shot.

Hells Canyon 300 WSM 168 Gr Barnes TTSX, RL17, Fed 215, 63 Grains, 0.021 Jump, Norma Brass

Titanium Mtn. 300 WSM 168 Gr Barnes TTSX, RL15, Rem 91/2 M, 58 Grains, 0.021 Jump, Norma Brass
 

derfssor

Active Member
Joined
Feb 15, 2021
Messages
38
Location
oak harbor wa.
I have tried 4064, with no joy, 4831 imr or H will work just fine in 150 to 180 group of bullets. OAL will be critical in the loads i tried. 50 for Barnes and 25 to 30 with everything else. This has worked for me and my 2 wsm’s. Just my 2 cents worth.
 

derfssor

Active Member
Joined
Feb 15, 2021
Messages
38
Location
oak harbor wa.
4831 both IMR and H has worked fo me. I have found that OAL was very critical in the 2 WSM’s i have. If using barnes, 50 to 60 off lands and 25 to 30 with everything else. This worked for me and just my 2 cents worth. Good luck and have fun.
 

shphtr

Well-Known Member
Joined
Jul 7, 2006
Messages
260
Location
Alaska
in my Kimber Montana 8400 7WSM RL 26 sends 150 gr Hammers out at 3350 fps into one ragged hole - have shot faster but this was most accurate pressure free load.
 

PrecisionRx

Active Member
Joined
Mar 21, 2021
Messages
27
Location
Mississippi, USA
180gr Accubonds with 68.0 gr of RL 22 has produced this group.
F9EDA646-D82C-485C-9D50-6E5F4CE10893.jpeg
 

adams

Member
Joined
Jan 22, 2021
Messages
5
Location
california
Looking for recommendations for powder for my 300 wsm for 150 to 185 grain freedom seeds.ive looked everywhere trying to find any 4350 type powder with no luck. I have found imr 4955.magpro and superformance and imr 7828ssc powders instock are these good powders or should I keep looking? Or what would you suggest Thanks
I just put together a 300 wsm and developed a load using N550. 62gr pushing a 180 cutting edge lazer at 3058fps with Norma brass out of a 20” 1:10 barrel. It’s shooting decent but I think I could still refine it and get a tighter group.
 

Ross Douglas

Member
Joined
Apr 16, 2015
Messages
23
Location
Tennessee
Looking for recommendations for powder for my 300 wsm for 150 to 185 grain freedom seeds.ive looked everywhere trying to find any 4350 type powder with no luck. I have found imr 4955.magpro and superformance and imr 7828ssc powders instock are these good powders or should I keep looking? Or what would you suggest Thanks
I like IMR 4831 and Reloader 17 with 150-180 bullets. I am using Reloader 22 with 190 in mine and getting 3,000 fps with it. Reloader 26 will push a 190 up to 3,150fps, but the extreme spread was over 80 fps. Reloader 17 is similar to IMR 4350, but it will give higher velocity.
 

Possum Cop

Well-Known Member
Joined
Jan 10, 2019
Messages
222
Location
Louisiana
I use superformance
Does anyone have a good load for Superformance loads for a 300 RSAUM? I asked Hodgedon and the technician said no data available.
I know that the OP is asking about the WSM but I just started working on a project with a Remington 700 LTR 20” barrel and 166 Hammer Hunter bullets.
 
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