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#5659016 - 03/19/15 03:52 PM New IMR powders- 4166, 4451, 7977
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11004
Loc: Lewisville, TX
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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#5659026 - 03/19/15 03:55 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
Cleric Offline
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Registered: 03/11/12
Posts: 2838
Why can't they use names? I can never remember the 4 digit codes

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#5659030 - 03/19/15 03:57 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11004
Loc: Lewisville, TX
I'm a numbers guy, so I remember powder numbers very well. I know what you mean, though.
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#5659035 - 03/19/15 04:00 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
Cleric Offline
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Registered: 03/11/12
Posts: 2838
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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#5659078 - 03/19/15 04:27 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 21712
Loc: Texas
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
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#5659148 - 03/19/15 05:07 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
DStroud Offline
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Registered: 11/02/11
Posts: 1498
Loc: Waco
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.

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#5659457 - 03/19/15 09:00 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
FiremanJG Offline
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Registered: 12/16/08
Posts: 21130
Loc: Wolfe City, TX
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. sick
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#5679884 - 04/01/15 02:49 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
Cleric Offline
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Registered: 03/11/12
Posts: 2838
About to get 3lbs of 4166 from bass pro. Not sure what I will use it on...

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#5679895 - 04/01/15 03:00 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
Cleric Offline
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Registered: 03/11/12
Posts: 2838
Btw they have 2 boxes of 140 amax here in grapevine

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#5682171 - 04/02/15 09:43 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
ASIC777 Offline
Woodsman

Registered: 11/30/07
Posts: 222
Loc: McKinney, TX.
4166 : Cabelas in Allen had 3 1 lb bottles earlier this evening. A little pricey at 31.99 each.


Edited by ASIC777 (04/02/15 09:44 PM)
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#5682190 - 04/02/15 10:02 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
Dave3575 Offline
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Registered: 02/12/12
Posts: 1087
Loc: Plano, TX
4166 - same load data in 6.5x47 as varget load shot the exact same velocity, accuracy, etc... grain for grain.

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#5682239 - 04/02/15 10:48 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
5 Stand Dan Offline
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Registered: 06/23/12
Posts: 1573
Loc: DFW
These new IMRs do cost more, need some?
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#5682878 - 04/03/15 12:41 PM Re: New IMR powders- 4166, 4451, 7977 [Re: Dave3575]
RiverRider Online   content
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Registered: 11/11/07
Posts: 7102
Loc: Wise Co.
Originally Posted By: Dave3575
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...
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#5682898 - 04/03/15 12:54 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11004
Loc: Lewisville, TX
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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#5682996 - 04/03/15 02:14 PM Re: New IMR powders- 4166, 4451, 7977 [Re: ChadTRG42]
DStroud Offline
Pro Tracker

Registered: 11/02/11
Posts: 1498
Loc: Waco
Look what I found at Cabelas
Probably try it in the 6.5 Creemoor first

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