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300 Win mag load advice

 
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  #22  
Old 11-07-2008, 10:11 PM
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Re: 300 Win mag load advice

Montana Native, I'm shooting a 300 WSM (which is very close to the WM in ballistics) out of a 11 twist, 24 inch barrel and using 180 gr bullets. For the WM your most effiicent down range bullet, other than a wildcat will be probably be in the 180 - 200 gr range. My first choices would be E-Tips then AB's. That's just me.

For Montana shooting, with wide range of temps, I would go with one of the Hodgdon extreme powders, For a 300 WM, H1000, Retumbo or H4831sc might be good choices.
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  #23  
Old 11-07-2008, 10:15 PM
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Re: 300 Win mag load advice

Quote:
Originally Posted by phorwath View Post
I shoot 200 gr Nosler ABs and 210 Berger VLDs in my 300 WM and I use IMR 7828 and H1000. I've never shot a bullet lighter than 200 gr in my 300 WM to date, but my comments are still applicable. If you strike out with 3 different 180 gr bullets, then you could always try different weight. 168s, 190s, 200s, etc.

If the gun is going to shoot well, you'll generally find a bullet/powder combination within 3 or 4 different bullets and powder combinations. I'd start to lose patience with the rifle after that.

It bugs me because the 180gr Hornady factory ammo shoots great. Thats why Im trying the 180 Interlocks next. Then on to the 200gr Accubonds. I might pick up some RL25 and H1000
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  #24  
Old 11-07-2008, 10:20 PM
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Re: 300 Win mag load advice

Quote:
Originally Posted by Tang View Post
It bugs me because the 180gr Hornady factory ammo shoots great. Thats why Im trying the 180 Interlocks next. Then on to the 200gr Accubonds. I might pick up some RL25 and H1000
I believe the bullet to be the most important component in finding an accurate load for any rifle, so if you can load the same bullet that shoots well in a factory round, then you'll do well with that bullet in reloads also, provided your reloads are up to snuff quality control wise. Good luck to ya.
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  #25  
Old 11-07-2008, 10:57 PM
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Re: 300 Win mag load advice

Thanks phorwath. I pulled one of the bullets out of the Heavy Mags, to see if they were flat base or boat tail. They use flat base 180gr Interlocks. Which is good from the $ side of things, considering they are $23 per 100.

When I pulled the bullet, I weighed the charge. It was 84.5 gr and compressed so much I had to tap the sides of the case to get it all out. The powder looked more like flattened balls, than like the pellet shape of my RL22. RL25 is about as close to that charge as I can get I think. I wish Hornady would just sell me that powder
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  #26  
Old 11-08-2008, 10:09 AM
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Re: 300 Win mag load advice

Thanks for all of the advice. I've picked some Bergers in 190 and 210, some SMK's in 190 and 210 and some Accubonds in 200.

Generally, where is a good spot to start seating them? 0.020" out of the lands?

Thanks again for all of the great advice. I'm going to break in the barrel tomorrow with some light 200 gr Speers then work on some good loads.
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  #27  
Old 11-08-2008, 12:15 PM
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Re: 300 Win mag load advice

I broke my barrel in the same time I was working up a load looking for max. Saves cost in ammo and rounds down the tube and time. For the Accubonds, I would probably start them about .010 off the lands, that's just me.
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  #28  
Old 11-08-2008, 02:13 PM
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Re: 300 Win mag load advice

I just got finished checking the max OAL on my Ruger M77. With a 180gr Partiton, they hit the lands at 3.531".

So should I start loading loading them at 3.51" to load single shot style ? Would that be best for accuracy ? Sorry for the noob questions, but Im fairly new to reloading.
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