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New IMR powders- 4166, 4451, 7977
#5659016
03/19/15 08:52 PM
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Joined: Sep 2009
Posts: 18,907
ChadTRG42
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Has anyone played with these yet? I was wanting to play with 4451, but I can't find any right now. It's a little more expensive than your normal IMR and Hodgdon powders. I was thinking about producing a line of 308 ammo with the 4166 with 178 A-max if it can meter.
4166 is similar in burn speed to R15 and Varget.
4451 is similar in burn speed to 4350.
7977 is similar in burn speed to H1000, R25.
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659026
03/19/15 08:55 PM
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Joined: Mar 2012
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Why can't they use names? I can never remember the 4 digit codes
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659030
03/19/15 08:57 PM
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Joined: Sep 2009
Posts: 18,907
ChadTRG42
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I'm a numbers guy, so I remember powder numbers very well. I know what you mean, though.
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659035
03/19/15 09:00 PM
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I think the differences is you spend a lot of time with the powders
Btw if you can't get the powders us lowly plebs sure as hell can't
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659078
03/19/15 09:27 PM
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Joined: Sep 2006
Posts: 32,442
kmon11
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I am also a numbers guy and can remember numbers better than names. Perhaps that is the Engineer in Me.
Read somewhere the new IMR powders have the same tech as CFE223 for copper fouling reduction. When I see some would like to try the slowest in the 22-243 and 6.5-284
lf the saying "Liar, Liar your pants on fire" were true Mainstream news might be fun to watch
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659148
03/19/15 10:07 PM
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Joined: Nov 2011
Posts: 3,624
DStroud
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I have used the IMR 7977 in the 22 Creedmoor and the 6mm Creedmoor. Got good performance in the 22 CM with 75gr Amax very accurate and speed was good. In the 6mm CM the accuracy and consistency was not as impressive with the 105 Berger but with the 105 AMax it did very well. Meters well and supposedly has the copper fouling remover but cannot comment if that works or not. Like the CFE223 it turns your patches very black for a couple of patches but then cleans easily from that point.
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5659457
03/20/15 02:00 AM
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Joined: Dec 2008
Posts: 41,084
J.G.
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Dangit Chad! I still didn't send you my notes for the few .308 Win ogive measurements after our phone conversation. Why you not catch me on a rain day when I'm at the loading bench? There's been plenty lately.
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5679884
04/01/15 07:49 PM
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About to get 3lbs of 4166 from bass pro. Not sure what I will use it on...
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5679895
04/01/15 08:00 PM
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Joined: Mar 2012
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Btw they have 2 boxes of 140 amax here in grapevine
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5682171
04/03/15 02:43 AM
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Joined: Nov 2007
Posts: 603
ASIC777
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4166 : Cabelas in Allen had 3 1 lb bottles earlier this evening. A little pricey at 31.99 each.
Last edited by ASIC777; 04/03/15 02:44 AM.
Lifetime NRA Member
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5682190
04/03/15 03:02 AM
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Joined: Feb 2012
Posts: 1,182
Dave3575
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4166 - same load data in 6.5x47 as varget load shot the exact same velocity, accuracy, etc... grain for grain.
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5682239
04/03/15 03:48 AM
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Joined: Jun 2012
Posts: 1,835
5 Stand Dan
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These new IMRs do cost more, need some?
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Re: New IMR powders- 4166, 4451, 7977
[Re: Dave3575]
#5682878
04/03/15 05:41 PM
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Joined: Nov 2007
Posts: 9,502
RiverRider
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4166 - same load data in 6.5x47 as varget load shot the exact same velocity, accuracy, etc... grain for grain. Interesting. Does the powder LOOK like Varget? Is it imported from Austraila? You know where I'm going...
"Arguing with you always makes me thirsty." -Augustus McRae
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5682898
04/03/15 05:54 PM
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Joined: Sep 2009
Posts: 18,907
ChadTRG42
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4166 is an extruded powder, grey in color, kind of shiny. It says it's mfg in Canada. It doesn't look like Varget at all.
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5682996
04/03/15 07:14 PM
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Joined: Nov 2011
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DStroud
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Look what I found at Cabelas Probably try it in the 6.5 Creemoor first
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5683029
04/03/15 07:55 PM
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Joined: Sep 2009
Posts: 18,907
ChadTRG42
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^^^ It will work fine, but it you will lose about 50-100 fps from the slower burning powders, like 4350. It's pretty close to Varget data.
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Re: New IMR powders- 4166, 4451, 7977
[Re: ChadTRG42]
#5683514
04/04/15 01:31 AM
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Joined: Nov 2007
Posts: 9,502
RiverRider
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4166 is an extruded powder, grey in color, kind of shiny. It says it's mfg in Canada. It doesn't look like Varget at all. Well, if it's made in Canada it's NOT just relabeled Varget. Varget is an ADI powder and is the same as AR2208. Looks like the choices in the medium burn rate category just keep getting better and better. If I wasn't so well set with Re15 for my .35 Whelen I would give the new IMR powder a try.
"Arguing with you always makes me thirsty." -Augustus McRae
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