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powder recommendation
#6899867
09/26/17 09:17 PM
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Joined: Dec 2011
Posts: 3,570
garyrapp55
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I remember Michael at the THF Long Range/ Precision Rifle Match back in July said buy enough powder to burn out the barrel due to changes from lot to lot for consistency. My current supply of powder is running low and I need a recommendation for good powder for my 308. The X-terminator I've been using is fine but I can't find it in more than 1lb and I'm assuming there are better powders available. What do you recommend?
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Re: powder recommendation
[Re: garyrapp55]
#6899873
09/26/17 09:24 PM
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Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
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Powder Valley has 8-pounders of X-Terminator right now, if that's what you want to stick with. I'm not a .308 shooter nor am I a long range fan...but I'd be surprised to not see one who is both recommend Varget. I'm thinking JG in particular...let's see if I'm right about that.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: powder recommendation
[Re: garyrapp55]
#6899902
09/26/17 09:39 PM
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Joined: Sep 2009
Posts: 18,960
ChadTRG42
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It helps to know which bullet weight you plan to shoot to help recommend a powder. Varget and R15 are always good for 168-175/178 grain. But the options are wide open and a 308 is not a finicky round on powder choices. If you go to this burn rate chart, the powders that are suitable for a 308 WIn run from about #82 to about #108. Faster powders for the lighter bullets and slower powders for the heavier bullets. https://www.hodgdon.com/wp-content/uploads/2017/09/burn-rate-color.pdf
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Re: powder recommendation
[Re: RiverRider]
#6899905
09/26/17 09:41 PM
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Joined: Dec 2011
Posts: 3,570
garyrapp55
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Powder Valley has 8-pounders of X-Terminator right now, if that's what you want to stick with. I have nothing against X-terminator, just looking for something proven, and by those who know more than me about it.
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Re: powder recommendation
[Re: garyrapp55]
#6899907
09/26/17 09:43 PM
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Joined: Dec 2011
Posts: 3,570
garyrapp55
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Chad, I'm pushing 168's now and have no intention of lowering the weight. If anything, I'll go up.
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Re: powder recommendation
[Re: garyrapp55]
#6899941
09/26/17 10:12 PM
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Joined: Aug 2017
Posts: 6
Walker_clint
Green Horn
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Green Horn
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I've had great luck with Varget, also works well in .223.
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Re: powder recommendation
[Re: Walker_clint]
#6899952
09/26/17 10:22 PM
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Joined: Jun 2011
Posts: 34,046
Buzzsaw
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I've had great luck with Varget, also works well in .223. yep, double dip
SPACE FOR RENT
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Re: powder recommendation
[Re: garyrapp55]
#6900073
09/27/17 12:24 AM
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Joined: May 2014
Posts: 1,100
TackDriver
Pro Tracker
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Varget for me. If I don't find Varget, I'll get IMR 4064 or H 4895
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Re: powder recommendation
[Re: garyrapp55]
#6900289
09/27/17 03:35 AM
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Joined: Oct 2008
Posts: 2,743
Murphscout
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varget. Plenty to be found out and around these days
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Re: powder recommendation
[Re: garyrapp55]
#6900460
09/27/17 12:33 PM
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Joined: Dec 2008
Posts: 4,877
Teal28
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1. Varget 2. 4064 3. R15 4. MR 2000 if you want to go fast. But not very temp stable
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Re: powder recommendation
[Re: Teal28]
#6900506
09/27/17 01:20 PM
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Joined: Sep 2009
Posts: 18,960
ChadTRG42
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4. MR 2000 if you want to go fast. But not very temp stable Actually, it has tested more temp stable than varget. I have met and talked to the powder engineer that made the 2000MR and 4000MR series of powders. These 2 are what I call a "hidden jewel" of powders. They are not applicable in all situations, but the one's that are work very well.
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Re: powder recommendation
[Re: garyrapp55]
#6900604
09/27/17 02:25 PM
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Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
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A powder may exhibit more or less temperature tolerance in different cartridges.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: powder recommendation
[Re: RiverRider]
#6900674
09/27/17 03:19 PM
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Joined: Dec 2011
Posts: 3,570
garyrapp55
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A powder may exhibit more or less temperature tolerance in different cartridges. Please explain how.
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Re: powder recommendation
[Re: garyrapp55]
#6900813
09/27/17 04:45 PM
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Joined: May 2016
Posts: 2,421
yotehater
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the pressure and volume and caliber.
Last edited by yotehater; 09/27/17 04:46 PM.
One shot is all it should take.
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Re: powder recommendation
[Re: garyrapp55]
#6900900
09/27/17 05:26 PM
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Joined: Nov 2007
Posts: 9,523
RiverRider
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A powder may exhibit more or less temperature tolerance in different cartridges. Please explain how. I wish I could. I was told this during a conversation with one of the ballistics techs at Western Powders. I filed it under "credible" for future reference.
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: powder recommendation
[Re: garyrapp55]
#6900920
09/27/17 05:40 PM
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Joined: Dec 2011
Posts: 3,570
garyrapp55
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Re: powder recommendation
[Re: ChadTRG42]
#6901051
09/27/17 07:25 PM
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Joined: Dec 2008
Posts: 4,877
Teal28
Extreme Tracker
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4. MR 2000 if you want to go fast. But not very temp stable Actually, it has tested more temp stable than varget. I have met and talked to the powder engineer that made the 2000MR and 4000MR series of powders. These 2 are what I call a "hidden jewel" of powders. They are not applicable in all situations, but the one's that are work very well. First I have heard that. Read on several forums that it is sensitive.
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Re: powder recommendation
[Re: garyrapp55]
#6901344
09/27/17 10:38 PM
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Joined: Dec 2008
Posts: 4,877
Teal28
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Emailed Alliant to get their opinion on 2000MR. Here is their response. Alliant has three temp stable propellants by their chemistry. These are AR-Comp, Reloder-16 and Reloder-23. The Reloder-26 is a temp constant propellant but by its chemistry, we can't call it temp stable. The Power Pro 2000MR is not temp stable. Thanks, Duane V. Technical Services Rep Alliant/Blazer/CCI/Speer
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Re: powder recommendation
[Re: garyrapp55]
#6901450
09/27/17 11:47 PM
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Joined: Nov 2007
Posts: 9,523
RiverRider
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I guess I've been hiding under a rock, and who knows for how long. I had not heard of "temp stable" and "temp constant" until now. What in heck are the definitions of these terms?
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: powder recommendation
[Re: garyrapp55]
#6901879
09/28/17 12:44 PM
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Joined: Dec 2008
Posts: 4,877
Teal28
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A change in temperature can affect the trajectory or ‘flight path’ of the bullet in two well-known ways: So long as altitude, barometric pressure and humidity remain constant, an increase in air temperature will cause a flatter trajectory due to a lower air density (less collisions with ‘air particles’ per unit length of flight path). The same increase in temperature also causes the nitro cellulose based powder inside the cartridge to burn at a higher rate, producing approximately four times the Point of Impact (POI) shift than just air temperature alone. Just how much does an increase in temperature affect the powder burning-rate? Some powders are more susceptible to temperature effects than others and will burn faster than others. – Excerpt from Temperature Effects On Zero on KestrelMeters.com
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Re: powder recommendation
[Re: garyrapp55]
#6901885
09/28/17 12:48 PM
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Joined: Dec 2009
Posts: 473
killen
Bird Dog
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Bird Dog
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Re: powder recommendation
[Re: garyrapp55]
#6901891
09/28/17 12:57 PM
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Joined: Dec 2010
Posts: 1,482
Blanco
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Opinions on CFE in .308 ?? I have had great luck with CFE in .223 6.5Grendel and 30-30 I seem to remember it hits that same sweet spot that Varget is in ???
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Re: powder recommendation
[Re: Teal28]
#6901904
09/28/17 01:08 PM
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Joined: Sep 2009
Posts: 18,960
ChadTRG42
THF Celebrity
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Emailed Alliant to get their opinion on 2000MR. Here is their response. Alliant has three temp stable propellants by their chemistry. These are AR-Comp, Reloder-16 and Reloder-23. The Reloder-26 is a temp constant propellant but by its chemistry, we can't call it temp stable. The Power Pro 2000MR is not temp stable. Thanks, Duane V. Technical Services Rep Alliant/Blazer/CCI/Speer Interesting. They had a document that they released that showed the pressure and speed changes in various temps with a lot of the top powders. 2000MR was one of the top performers in that test for one of the lowest changes due to temp, and it was better than Varget. This was when it first came out.
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Re: powder recommendation
[Re: ChadTRG42]
#6901938
09/28/17 01:40 PM
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Joined: Dec 2008
Posts: 4,877
Teal28
Extreme Tracker
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Emailed Alliant to get their opinion on 2000MR. Here is their response. Alliant has three temp stable propellants by their chemistry. These are AR-Comp, Reloder-16 and Reloder-23. The Reloder-26 is a temp constant propellant but by its chemistry, we can't call it temp stable. The Power Pro 2000MR is not temp stable. Thanks, Duane V. Technical Services Rep Alliant/Blazer/CCI/Speer Interesting. They had a document that they released that showed the pressure and speed changes in various temps with a lot of the top powders. 2000MR was one of the top performers in that test for one of the lowest changes due to temp, and it was better than Varget. This was when it first came out. you may be right. I would like to see some actual results from testing. I have searched all over but cant find anything other than opinions and a few folks personal experiences. I do believe what Alliant said but have read differing opinions from people I trust when it comes to reloading.
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