Powder for 300 wsm

SamuelBerryhill308

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May 15, 2020
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842
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Lincolnton nc
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
 

TexSavage

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Jul 30, 2006
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Amarillo, Texas
I use H4831SC on my 185 thru 215 Berger freedom seeds. Only powder I ever tried, worked so great from the get go never had a reason to switch. Great performance as well as temp insensitivity. Just bought 5 lbs from the Hodgdon direct site. Had been trying for a month or so. Kept missing out other places.
 

smokey3

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Jan 20, 2016
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220
Location
WV
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
For what it's worth, Accurate powder says on their website that MagPro was specifically developed for the WSM line of cartridges. I have tried it in my 300WM but have not yet tried it in 300WSM. It is a very high velocity powder in my 300WM but the ES is not what I wanted. Supposedly that is not an issue with the short mags.
 

Muddyboots

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Feb 7, 2013
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Michigan
Hybrid 100V and 4000-MR is listed by Nosler for 180's. I have used Hybrid 100V with good results but haven't tried the 4000MR yet. RL17 will give you great velocity but is temp sensitive and rough on throats IF you shoot a lot of it from my experience. W760 is still a good powder to use as well.

300-WSM-175-180gr-version-8-3.jpg
 

Ross1147

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Aug 31, 2018
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433
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San Diego
Sam,

Of the powders you listed I’d go 7828ssc. It will work just fine with the bullet weights you’ve listed.
I’ve ran 4831sc, IMR 4350, RL17 and RL26 in mine. I’ve found I like RL26 the most, at least with the heavy pills (>200grn). 180 is the lightest bullet I’ve shot in my gun. With the weights you’ve listed I’d search high and low for H4350.

Ryan
 

SamuelBerryhill308

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May 15, 2020
Messages
842
Location
Lincolnton nc
Thanks everyone for you input. What I have on hand is n550 and w760 that I have see load data for I also have imr 4064 that I could use for 150s and I have ramshot biggame as well but havnt seen any load data for it for 300wsm.i have other powders to but there more for 308 win
 

SamuelBerryhill308

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May 15, 2020
Messages
842
Location
Lincolnton nc
W760 will do nice job for 150-180 and provide good accuracy. Seems to be overlooked these days but still darn good performer. Like any ball powder, stay away from light loads to insure good case density and use mag primer in accordance to load data.
Okay I've got 3 lbs of it that I havnt used any out of.ive used it in my 30-06 some but that's the only cartridge so far
 
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