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260 Rem Load Recipeies?

 
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  #141  
Old 09-15-2012, 10:48 PM
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Re: 260 Rem Load Recipeies?

Quote:
Originally Posted by jtkratzer View Post
On the H4350...I see the data suggested here, but on Hodgdon's data on their website, the 140 gr Nosler Partition is listed at 39.0 - 42.0 grains and the 142 Sierra HPBT is listed at 41.5 - 44.5 grains. I'm guessing I could start with 42.0 as the Accubond and Berger are closer in design to the Sierra than the Nosler Partition and check every piece of brass for pressure signs.
The burn rate of RL17 and H4350 are very similar. At one time I loaded 44grains of RL17 with the 140VLD. Sent them at 2900+
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  #142  
Old 09-15-2012, 11:22 PM
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Re: 260 Rem Load Recipeies?

Sounds great. I loaded 41.5 - 44.5 gr of H4350 in 0.3 gr increments for both the Accubonds and VLDs. Going to load up the RL22 in the morning. If I'm not content with the velocity and accuracy from either powder, I'll pick up some RL17.

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  #143  
Old 09-16-2012, 05:56 AM
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Re: 260 Rem Load Recipeies?

Trebark, how's the consistency of the RL-17 with heat?
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  #144  
Old 09-16-2012, 11:12 AM
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Re: 260 Rem Load Recipeies?


Kombayotch's graph
I have not seen him post here on LRH, but Kombayotch does post on Canadian gun nutz [moderator there], 6mmBR, and SH**.
He is the guy the duplicated the Powder temp tests [with an oven, a cooler, and a chronograph at the range] and duplicated the Ammonia based Copper solvents vs KG12 test.
The best were the Hodgdon Extreme powder series, and now Alliant has ARcomp, which is even more temp stable.
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  #145  
Old 09-16-2012, 12:04 PM
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Re: 260 Rem Load Recipeies?

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Originally Posted by jtkratzer View Post
Just H4350 and RL22 right now. I wasn't impressed with H4831sc in my Model Seven 260 for accuracy or velocity. The RL22 pushed a 129 gr SST to just shy of 2900 out of a 20" tube.
.
H4831sc is generally too slow burning for a 20" barrel. A lot of it burns outside the barrel. I think 26" or more is needed when using this powder.
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  #146  
Old 09-16-2012, 03:46 PM
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Re: 260 Rem Load Recipeies?

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Originally Posted by Capt Academy View Post
Trebark, how's the consistency of the RL-17 with heat?
RL17 is very temp sensitive. As a result, I abandoned the load and changed to H4350. I have not yet redeveloped a hunting load for my 260 yet though. At the time I made the change, I was already about to finish a load for my 300RUM. As a result, the RUM has been my primary hunting tool.
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  #147  
Old 09-16-2012, 04:58 PM
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Re: 260 Rem Load Recipeies?

With Re17 in a 22" 270 I can get 3000 fps 150 gr and 3230 fps 130 gr with long brass life.
I would have bet money that was not possible.
But that is just at one temperature.
If I have to reduce the load for temperature variations, then there is no real gain over other powders.
I use H4350 or H4895... and I only reduce 4% powder charge from long brass life threshold at room temp, for hunting loads.
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