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300 WSM reloading

 
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  #8  
Old 06-07-2012, 09:43 AM
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Join Date: Feb 2011
Location: Faulkton, SD
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Re: 300 WSM reloading

That is some good advice Brent, thanks. I haven't been messing with seating depth too much yet, I have it stuck in my head that closer to the lands = better accuracy, but I need to convince myself that that isn't necessarily the case. RL17 has given my the worst groups of the powders I have tried, so i've been concentrating on RL19 for the most part. General consensus seems like that should be a decent powder to use. Not really looking for blazing speed, more looking for accuracy.

Thanks guys!
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  #9  
Old 06-07-2012, 12:27 PM
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Re: 300 WSM reloading

Quote:
Originally Posted by rimjob_rob View Post
That is some good advice Brent, thanks. I haven't been messing with seating depth too much yet, I have it stuck in my head that closer to the lands = better accuracy, but I need to convince myself that that isn't necessarily the case. RL17 has given my the worst groups of the powders I have tried, so i've been concentrating on RL19 for the most part. General consensus seems like that should be a decent powder to use. Not really looking for blazing speed, more looking for accuracy.

Thanks guys!
For longer range with 165 to 190 grain loads I'd look more towards H4350 or H4831sc. The double based RL powders will produce excellent velocity and they burn clean, but you may have to sacrifice long range accuracy in terms of temp sensitivity to get it. Out to 400 yards using a maximum point blank zero, the RL's are hard to beat.

Another one to check out if you plan to use 190 and heavier is IMR7828ssc. This has become my favorite powder in the 300 WSM for several reasons. H4350 doesn't cut it with the heavies as far as velocity is concerned, and H4831sc works great up to the 190 grain range, but for overall performance in any condition for my heavy 300 WSM loads, I reach for IMR 7828ssc.
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  #10  
Old 06-07-2012, 12:47 PM
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Re: 300 WSM reloading

Quote:
Originally Posted by brentc View Post

Another one to check out if you plan to use 190 and heavier is IMR7828ssc. This has become my favorite powder in the 300 WSM for several reasons. H4350 doesn't cut it with the heavies as far as velocity is concerned, and H4831sc works great up to the 190 grain range, but for overall performance in any condition for my heavy 300 WSM loads, I reach for IMR 7828ssc.
Excellent advice... have not loaded heavies in any of my WSM's, so definitely going to keep this bit of advice for later use! I can see that H4350 burn rate is just too fast for heavy bullets.
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  #11  
Old 06-07-2012, 01:55 PM
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Re: 300 WSM reloading

No fans of VV N550 here? The latest Nosler manual spoke very highly of it with 180 grains stuff
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  #12  
Old 06-08-2012, 10:18 AM
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Re: 300 WSM reloading

I have had very good luck with N550 in two different 300WSM rifles. I loaded the N550 with 168 grain Barnes TSX bullet. This load produced excellent accuracy.
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  #13  
Old 06-08-2012, 01:09 PM
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Re: 300 WSM reloading

Hopefully I can find a load my rifle likes.

Going to try N550 and Ramshot Hunter, Federal 215Ms, with the 180 TTSX, the 175 LRX, and the 168 Scirocco

Just waiting on my dies!
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  #14  
Old 06-08-2012, 03:05 PM
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Re: 300 WSM reloading

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Originally Posted by darrenflinn View Post
No fans of VV N550 here? The latest Nosler manual spoke very highly of it with 180 grains stuff
Good, but not good enough for the price they want for it lately. As far as the 300 wsm, you can use most of the normal mag powders, but you only have the same case capacity as the 300 h&h, so slower than rl22 or h4831 won't be at full pressure.

As to rl powders not being good at long range because of a supposed sacrilegious temp. sensitivity, all I can say is I've almost always got the best speed, accuracy, and uniformity with reloader. And it real world testing, the variance between high and low is usually less than hodgdon. Rl22 is all I shoot in my 300win browning a-bolt lh stainless stalker. I've got around 2 kegs just for that rifle.
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