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Any idea what powder Remington uses for factory 308?
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Does anybody have any idea what powder Remington uses for 150 gr. Coreloks in .308 Win. in the green box ammo? I believe it is called Express ammo.


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Posts: 1521 | Location: Just about anywhere in Texas | Registered: 26 January 2008Reply With Quote
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Yeah, their very own custom blend of non-canister powder unavailable to reloaders.
 
Posts: 130 | Location: AZ | Registered: 17 July 2010Reply With Quote
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I'm sure it is but any idea what it might be close to?


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Posts: 1521 | Location: Just about anywhere in Texas | Registered: 26 January 2008Reply With Quote
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I would start with IMR-4064.


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Posts: 2272 | Location: Texas | Registered: 18 May 2004Reply With Quote
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Pull a bullet and weigh the powder charge. Take note of the colour and dimensions of the kernels.
Then do some research as to how much powder of what type drives a 150 grain bullet. IMR powders 3031, 4895,4064, and 4320 all work well with a 150 grain bullet out of a .308. It would not surprise me to find a ball powder is actually the propellant in this round.
 
Posts: 152 | Location: Alberta, Canada | Registered: 29 July 2007Reply With Quote
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A lot of Remington factory ammo etches the case neck with a hard black fouling that gets worse with exposure to the atmosphere and time. This black soot is easily wiped off of the brass when fresh. Later it had to be scrubbed with an abrasive like Scotch Brite.
Based on that an my experience the Remington is loaded with a ball powder. The most likely powder is Winchester 748. I doubt there is any reason for a specially designed non-canister in the .308 it is already a high pressure round and it has limited capacity. The more dense spherical powders are going to get all you can get.
However 748 is not a recommendation on my part.
I would pick either 4895 or 4064.
 
Posts: 13978 | Location: http://www.tarawaontheweb.org/tarawa2.jpg | Registered: 03 December 2008Reply With Quote
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quote:
I doubt there is any reason for a specially designed non-canister in the .308

That statement is certainly true, but misses the point.

Ammunition factories almost always use a non-canister grade of powder. Powder lots vary, and those lots which fall within certain accepted parameters are packaged and sold at retail as "cannister" powders. Other lots which vary enough from the "cannister grade" specs are sold to and used by ammunition factories where they test the lot and adjust the load to achieve the desired velocity/pressure for a given round and bullet.

So, although Remington may use a commonly recognized powder in its .308/150, say IMR 4895, the lot it uses will typically have burning characteristics enough different from "cannister" IMR 4895 that the load must be adjusted to achieve the same velocity and pressure.
 
Posts: 13263 | Location: Henly, TX, USA | Registered: 04 April 2001Reply With Quote
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quote:
specially designed non-canister


Stonecreek I think you missed the word "specially".
 
Posts: 13978 | Location: http://www.tarawaontheweb.org/tarawa2.jpg | Registered: 03 December 2008Reply With Quote
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Well thanks to ALL participants. Cool
I wish.....I would have pulled one before I fired the 10 rounds I used for sighting in and chronygraphing. These were given to me and all I had. They also shot exceptionally well. (one large jagged hole (after I got it zeroed) for 4 shots @ 100yds at 2800 fps with the 150s.
I really was surprised.
So far, in the preliminary with regards to handloaded ammo, I have had best performance with H-380 and 165 gr. Hornady BTSP I-loks at around 2750 to 2800. It is so far refusing to do any good with 165 gr.Remington Coreloks with H-380 or 4064.. will try IMR 4895 in the near future.


"The right to bear arms" insures your right to freedom, free speech, religion, your choice of doctors, etc. ....etc. ....etc....
-----------------------------------one trillion seconds = 31,709 years-------------------
 
Posts: 1521 | Location: Just about anywhere in Texas | Registered: 26 January 2008Reply With Quote
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quote:
Originally posted by SR4759:
A lot of Remington factory ammo etches the case neck with a hard black fouling that gets worse with exposure to the atmosphere and time. This black soot is easily wiped off of the brass when fresh. Later it had to be scrubbed with an abrasive like Scotch Brite.
Based on that an my experience the Remington is loaded with a ball powder. The most likely powder is Winchester 748. I doubt there is any reason for a specially designed non-canister in the .308 it is already a high pressure round and it has limited capacity. The more dense spherical powders are going to get all you can get.
However 748 is not a recommendation on my part.
I would pick either 4895 or 4064.


SR, I went back and reread your thread and I agree about the carbon build-up on the neck with ball powders. I just never put it together with "all" the other ball powders.
H380 does the same on my 22-250 cases. Clean early and no problem, wait and it's steel wool time.


"The right to bear arms" insures your right to freedom, free speech, religion, your choice of doctors, etc. ....etc. ....etc....
-----------------------------------one trillion seconds = 31,709 years-------------------
 
Posts: 1521 | Location: Just about anywhere in Texas | Registered: 26 January 2008Reply With Quote
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In a 308 with 150gr bullets try IMR 3031.

Start with 40 grains and work up.

I shoot 42 grains.


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Posts: 16134 | Location: Texas | Registered: 06 April 2002Reply With Quote
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IMR 3031 is my go to for 308 (thanks to N E 450 No 2) 39.5 g with a 165

For 150g Core Lokt, I have found 45g Varget to be quite accurate. But, that is just my guns.
 
Posts: 6273 | Location: Dallas, TX | Registered: 13 July 2001Reply With Quote
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