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300 WSM load


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#1 Loopdog

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Posted 09 October 2012 - 10:02 AM

Anyone have a favorite load for the 300 WSM? I will be using Hornady 178’s. I reckon i just need to know about which powders are best for that cartridge.

#2 sxshooter

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Posted 09 October 2012 - 05:32 PM

Just based on the case capacity and bore I'm guessing either H-4831 or IMR 4831 would be pretty happy. 4350 might be a tad fast burning for that case.
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#3 Loopdog

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Posted 10 October 2012 - 10:36 AM

Thanks SXShooter

#4 sxshooter

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Posted 10 October 2012 - 08:23 PM

http://www.handloads...r=Powder=

Try this link to some data. The one 180 load with H4831 was noted as accurate.
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#5 GSH

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Posted 10 October 2012 - 08:36 PM

You can use IMR 4350 also, Nosler Reloading Guide #6, doesn't list a load for 178 grain bullet, but for a 180 it starts at 61 grains(most accurate) and goes up to 65 grains. The most accurate powder they test is Viht N550 at the max load of 61 grains, starting 57 grains (180 grain bullet).

#6 Desert Fox

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Posted 10 October 2012 - 09:27 PM

I developed load for a friend Model 70 Super Shadow using 168 grain TSX and IMR 4831. I can't remember the exact powder charge but the performance was excellent and deadly accurate.

Here's the picture of the bullet taken from an A-Zone deer taken at a distance of 200 yards. The bullet entered the chest cavity and the bullet recovered at the ham in a classic mushroom.

Posted Image
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#7 Loopdog

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Posted 12 October 2012 - 07:53 AM

Thanks again for the help. I hope to see if i can stretch her out past 1200 yrds.. I have some 12" plates that we bang away at out to 1400 yrds and an 24 x 20 we hang at a mile..

#8 Desert Fox

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Posted 12 October 2012 - 09:32 AM

Depend on where you're going to shoot this bullet. You'll be hard press to go beyond 1200 yards unless you can push it above 3000 fps. I run the numbers in my ballistics program base on 2900 fps nominal velocity. The 178 will be below mach at 1200 yards.

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#9 Loopdog

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Posted 12 October 2012 - 09:39 AM

AH bummer ......

#10 Desert Fox

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Posted 12 October 2012 - 10:23 AM

Have you look into 180 grain A-Max? The BC on this thing is much higher than 178.

What is your ASL at the range?
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#11 Loopdog

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Posted 12 October 2012 - 10:29 AM

We go from 4000 feet up to 6000 at the ranch.. I have about 900 of the 178's i also load my .308 with them. I will look at the 180 grain a-max also.

#12 Desert Fox

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Posted 12 October 2012 - 10:32 AM

If you are above 4K then you'll be fine. Give it a try anyway.
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#13 sxshooter

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Posted 12 October 2012 - 11:25 AM

Hitting a target below the speed of sound is still viable for plinking.
It's not about how many, it's about how.
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#14 Loopdog

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Posted 12 October 2012 - 11:27 AM

It will be fun to find out. Im just happy pullin the trigger

#15 Desert Fox

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Posted 12 October 2012 - 05:58 PM

Hitting a target below the speed of sound is still viable for plinking.

Some bullet will exhibit stability even in the transonic region of it's flight. The only way to find out is shoot it and see what happens.
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