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H4831sc for .270win with Hornady 130gr SST

 
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  #1  
Old 08-28-2013, 08:27 PM
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Location: Poteau, OK
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H4831sc for .270win with Hornady 130gr SST

I'm working up loads form my .270win using the Hornady 130gr SST. Have any of y'all used H4831? What was your start/max loads? I can't find any data for this combo in RCBS handbook or Hodgon's online load data. Any advice would be helpful.
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  #2  
Old 08-28-2013, 08:40 PM
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Re: H4831sc for .270win with Hornady 130gr SST

The 9th Edition of Hornady’s handbook of cartridge reloading shows the following for that bullet in a Win model 70 with 1 in 10 twist, 24” barrel and a COAL of 3.210”.

Horandy does not list a load using H4831SC but it has the same burn rate as H4831 so the loads should be similar.

H4831

52.3 gr/2600 fps
54.2 gr/2700 fps
56.2 gr/2800 fps
58.1 gr/2900 fps
60.1 gr/3000 fps
62.0 gr/3100 fps
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  #3  
Old 08-28-2013, 10:09 PM
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Location: Wolf Point, MT
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Re: H4831sc for .270win with Hornady 130gr SST

It'll like it hot, they all do. Fill it to the base of the neck and seat your bullet. BTW this is one of the premium powder cartridge sweet spots of all time.
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  #4  
Old 08-28-2013, 10:20 PM
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Re: H4831sc for .270win with Hornady 130gr SST

I'm curious about the COAL shown above. I'm shooting a rem 700 and by measuring the total overall length for these bullets I have come up with 3.407" to the lands. I have seated the bullets at 3.386" COAL to put them .021" off the lands. I measured the total length by placing a bullet in the throat and marking a line on cleaning rod at the muzzle and by marking another line with the rod resting on the bolt face when closed. I have sooted the bullet in a dummy round and I can see no marks from the rifling. I have read that the rem 700 tends to have a long throat. Am I too far off with these calculations to be safe?
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  #5  
Old 08-28-2013, 10:45 PM
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Re: H4831sc for .270win with Hornady 130gr SST

I wouldn't concern myself with what COL is listed elsewhere, it's just as likely not to work as it would be to work in your rifle, stick with what you're doing now.

In my 270 with 130gr pills I have had really good accuracy with 60gr of H4831sc and the same amount of RE22. RE22 was the faster powder in my rifle and accuracy was almost identical. My rifles' barrel is only 22" so my velocity isn't all that great, will have to rectify that one day!
Another bullet worth trying is the Nosler 140gr Accubond, one ragged hole groups out of my rifle, I was very impressed with it's accuracy and it kills really well to boot!

Cheers.
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  #6  
Old 08-28-2013, 11:00 PM
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Re: H4831sc for .270win with Hornady 130gr SST

Thanks for the help guys
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  #7  
Old 08-29-2013, 02:46 AM
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Re: H4831sc for .270win with Hornady 130gr SST

I load 59.5 g 4831sc with 130 grain at 30 thou from the lands. 60 grains and I get pressure signs.
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