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Wc 852

This is a discussion on Wc 852 within the Ammunition forums, part of the M14 M1A Forum category; I was at a friends today bsing before turkey hunting and he gave me about 3/4 of a pound of this.He said they got it ...


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Old May 19th, 2012, 09:05 PM   #1
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Wc 852

I was at a friends today bsing before turkey hunting and he gave me about 3/4 of a pound of this.He said they got it during the Clinton years and was using it in their Garands.On the cannaster it says it was recovered from unshot military ammo and is a ball powder but that's all I know about it.Is it a hot powder and would you use it up in your M1a? Thanks. Dan

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Old May 20th, 2012, 06:32 AM   #2
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Well. I guess I should have done a search,new to the site. I think I'm going to just shelve or dispose of this powder.if there was more I'd try to use it but it seem like there were a lot of variables . Thanks

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Old May 20th, 2012, 08:31 AM   #3
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Old May 20th, 2012, 10:50 AM   #4
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Don’t pour it out on the lawn!

I bought a bunch of WC852 during the Clinton era and it has been an exceptional powder in a number of cartridges.

There are a number of different 90,000 pound lots of WC852 that were on the market and they were all of a different burn rate. I got mine from Jeff Bartlett of GIBrass. This is the GI loading data for my lot:

30-06 Govt Loading Data: Lake City case and Primer, 60.1 grs
WC852, 152 gr Ball M2, average pressure 40,200 velocity 2750
Lot BAJ 47287


It was instructive to have the Government loading sheet. I learned that the "spec" values of GI ball are traceable to a Frankford Arsenal barrel. The Government QA guy carried calibration cartridges which in the FA barrel pushed a round 2750 fps at a known pressure. He then fired those rounds in the contractors pressure barrel and "corrected" the reading to the FA barrel. You will find if you shoot GI ball in your rifle your velocity is always less than either the FA barrel or Contractor barrel. People who quote the 2750 fps number, which they get from a TM, that number is only correct for a FA pressure barrel, you should not get those velocities from your Garand. I am of the opinion that 150 grain bullets should not go faster than 2700 fps in a Garand with 2650 fps or less being a good safe velocity.

Less is fine for a Garand:

M1 Garand 24” Douglas Barrel 1:10 twist

150 gr FMJBT 1966 Ball

14 Nov 2011 T= 74 F

Ave Vel = 2545
Std Dev = 20
ES = 68
Low = 2513
High = 2581
N = 8



Accurate Arms bought a different lot and sold it as “AA2700”. Obviously they are out of the original WC852 but they are making new “2700”, and you can compare and see that their stuff has a different burn rate.

I can only really speak about my lot of WC852, but as you can see from the GI data it is a slower burning powder than IMR 4895. I could not pack enough in a 308 case to get the velocity I wanted.

So you are out of luck for a 308 M1a.

However, I have shot kegs of the stuff in 30-06. It shoots very well in the M1, and I have shot nice targets with match bolt rifles:





A very good 30-06 load for me is a 168 Match, 57.0 WC852, any case, CCI #34 primer.

I have shot this powder with excellent results in 270 Win, 6.5 Swede, 7 X 57, it is a champ in 7.5 X 55 Swiss. I got the velocities I wanted in 243 Win, but the barrel sucked, such is life. WC852 works well at when it is filling a case 90 to 100% up. It will not work well in reduced charges.

You need to know what lot your WC852 came from, but you can use AA2700 information as a guide.

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Old May 20th, 2012, 02:07 PM   #5
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Thanks for the info but seeing as its only about 3/4pound and no info as far as lot or anything and would be putting it through a 308 I will do something with it,now I don't no about the front yard thing but have plenty of other options. Thanks. Dan

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Old May 20th, 2012, 02:23 PM   #6
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Quote:
Originally Posted by Dsc View Post
Thanks for the info but seeing as its only about 3/4pound and no info as far as lot or anything and would be putting it through a 308 I will do something with it,now I don't no about the front yard thing but have plenty of other options. Thanks. Dan
Good decision. I don't know about AA2700 of years gone by but I wouldn't recommend using it as an equivalent to today's powder. WC 852 is known to vary quite a bit in it's burn characteristics depending on when it was manufactured. The burn rate chart at this link

http://home.hiwaay.net/~stargate/powder/powder.htm

shows two listings for WC 852, one fast (#193) and one slow (#214). That's just way too much variance for my taste. AA2700 is shown at #186 meaning that it is much faster than even the fastest listing for WC 852.

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Old May 20th, 2012, 04:14 PM   #7
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That's how I read it and reloading for years,mostly the 45acp,LC, and 45/70,you really need that info so thanks all. Dan

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