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300 RUM....180 Grain Hornady SST

 
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  #1  
Old 02-12-2010, 11:26 PM
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Join Date: Feb 2010
Location: Red Deer, Alberta
Posts: 5
300 RUM....180 Grain Hornady SST

Hello everybody,
I was wondering if anyone out there is reloading there 300 RUM with Hornady's 180 grain SST. I am looking to try Retumbo powder for the first time, the rifle is on order so I have time to snoop around for a good load. Any comments gang? ( not only Retumbo....any powder)
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  #2  
Old 02-14-2010, 09:43 PM
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Join Date: Dec 2008
Location: Northern Id.
Posts: 3,394
Re: 300 RUM....180 Grain Hornady SST

Quote:
Originally Posted by Pryor View Post
Hello everybody,
I was wondering if anyone out there is reloading there 300 RUM with Hornady's 180 grain SST. I am looking to try Retumbo powder for the first time, the rifle is on order so I have time to snoop around for a good load. Any comments gang? ( not only Retumbo....any powder)
H870 and retumbo are the two best powders that I have found for the Ultra. H870 gives the best velocities, especially in the longer barrels. It was discontinued by Hodgdon a few years ago but you can get the exact same powder from Thunderbird cartridge in Az. (T870). The SST is very accurate within velocity limits. They disintegrated in mid air above 3400' in my 11 twist 3 groove barrel.......Rich
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  #3  
Old 03-23-2010, 04:51 PM
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Join Date: Jan 2010
Posts: 53
Re: 300 RUM....180 Grain Hornady SST

Try RE 25 and start about 93 grains and work up. FED215 primers. I think you will like it.
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  #4  
Old 03-24-2010, 06:16 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,953
Re: 300 RUM....180 Grain Hornady SST

I have limited experience reloading with the 300 RUM, but my first two choices in powder were Retumbo and H1000. My first bullet choices were 180 E-Tips, 200 AB's and 210 Bergers. I went with 97.5 gr of Retumbo pushing 180 E-Tips @ 3400 and sub .5 MOA performance out of a Sendero.

For 180 bullets and Retumbo, I would recomend starting with 92 gr and H1000 I would recomend starting with 90 gr.

-Mark
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  #5  
Old 12-08-2010, 06:02 PM
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Join Date: Dec 2010
Posts: 1
Re: 300 RUM....180 Grain Hornady SST

i use 96g of H1000 with a 180g SST.
It did the job this year at 487 yards, -16F @ 6000ft elevation.
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