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Old 11-16-2009, 05:46 PM   #1
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Accurate 2520

How many of you use 2520 powder? I'm having a tough time finding 4895 and thought I would try it. Phil Arrington has the recipe on his site for 168 match bullets which I will be using thought I would try it Any thoughts or comments?
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Old 11-17-2009, 08:43 AM   #2
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Re: Accurate 2520

I've loaded at least a thousand of rounds of .308 with AA2520. It's a great power as long as you understand its sensitivity to loading density and temperature. The last AA manual I have had very optimistic maximum charges. I always had pressure signs two full grains below the published max.
 
Old 11-17-2009, 04:40 PM   #3
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Re: Accurate 2520

I used it a lot when Midway? was selling it for 80$ per keg - then the prices went up.
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Old 11-17-2009, 05:44 PM   #4
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Re: Accurate 2520

Thanks guys for the info, its still cheaper than some other powders, and it should meter well too.
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Old 11-22-2009, 08:31 AM   #5
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Re: Accurate 2520

"... It's a great power as long as you understand its sensitivity to loading density and temperature..."

Please comment further. And does this also apply to A2230 (for 5.56 x 45)
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Old 11-22-2009, 09:14 AM   #6
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Re: Accurate 2520

Quote:
Originally Posted by djl4570
I've loaded at least a thousand of rounds of .308 with AA2520. It's a great power as long as you understand its sensitivity to loading density and temperature. The last AA manual I have had very optimistic maximum charges. I always had pressure signs two full grains below the published max.
Accurate seems to list high max charges for all of their powders, even pistol.

2520 is a great powder for .308. I use 2460 as well for lighter bullets. All accurate powders meter wonderfully but some are sensitive. AA#5 in .38 for example. My velocities are all over the map with that but Titegroup is very consistent.
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Old 11-23-2009, 11:08 AM   #7
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Re: Accurate 2520

Quote:
Originally Posted by us019255
"... It's a great power as long as you understand its sensitivity to loading density and temperature..."

Please comment further. And does this also apply to A2230 (for 5.56 x 45)
In my experience AA2520 is very sensitive to high pressure caused by loading density caused by compressed or near compressed charges. I've had more pressure signs from this powder than all others combined. Part of this problem is the very optimistic max charges listed in the AA loading manuals and their loading guides. I encountered the high pressures two full grains below the published max charge. AA2520 is also sensitive to heat. This became apparent to me when shooting some of my loads on a very hot day in the Sacramento Valley.

I cannot comment on AA2230 because I have loaded very little of it.
 
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