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#6224316 - 03/15/16 01:45 PM IMR4451
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Been playing around with this stuff for a little bit now in my 6mm Creed with good results. It does seem to be a bit faster than h4350 which it's right next to on the burn chart. My old load of 4350 was 41.8gr with a 105gr Hybrids and it yielded 3040fps from a 22"Bartlien. Get to the 4451 and was recommended to be in the 41gr area and with virgin brass 41gr yielded 3098fps with pressure signs. I backed it down to 40.6 and got no signs of pressure and a velocity of 3039fps with a sd of 11.6 all with virgin brass and shot very well (around 2" at 450yds). Going to be able to check it in a cooler temp this weekend but preliminary checks show it is pretty stable.
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#6224348 - 03/15/16 02:17 PM Re: IMR4451 [Re: dee]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
Very nice!! I've been running it some myself.
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#6224368 - 03/15/16 02:37 PM Re: IMR4451 [Re: ChadTRG42]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Originally Posted By: ChadTRG42
Very nice!! I've been running it some myself.


I'm going to try it on my 7mm Ackley soon with 160-168gr stuff. I'm running Varget right now as 4350 is just too slow to give an advantage and I'm hoping something in between the 2 would be nice.
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#6225509 - 03/16/16 12:19 PM Re: IMR4451 [Re: dee]
papa45 Online   content
Bird Dog

Registered: 05/14/07
Posts: 473
Loc: Arlington
Originally Posted By: dee
Going to be able to check it in a cooler temp this weekend but preliminary checks show it is pretty stable.


I tested 4451 for temperature sensitivity and found it to drop 50-65 fps from 80 down to 35 degrees in my .243 Win (See previous post on this subject.) Not too impressed. Hope your results are different. Please share after you test.

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#6225690 - 03/16/16 03:03 PM Re: IMR4451 [Re: dee]
Bbear Offline
Tracker

Registered: 11/24/13
Posts: 598
Loc: West Texas
Working with it on a 30-06 and a 308. Hope to get out this weekend to see what/how it does.
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#6225765 - 03/16/16 04:12 PM Re: IMR4451 [Re: dee]
RiverRider Online   content
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Registered: 11/11/07
Posts: 6226
Loc: Wise Co.
I ran across this relevant article just the other day.
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Originally Posted By: Cleric
God I am hating caliber threads more and more

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#6226349 - 03/17/16 06:20 AM Re: IMR4451 [Re: papa45]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Originally Posted By: papa45
Originally Posted By: dee
Going to be able to check it in a cooler temp this weekend but preliminary checks show it is pretty stable.


I tested 4451 for temperature sensitivity and found it to drop 50-65 fps from 80 down to 35 degrees in my .243 Win (See previous post on this subject.) Not too impressed. Hope your results are different. Please share after you test.


My temp was in the 70's for my initial velocities and it should be in the 40's Friday when I test again. I'll report back after the weekend.
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#6231943 - 03/21/16 07:56 PM Re: IMR4451 [Re: dee]
dee Offline
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Registered: 04/10/10
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Loc: Red River way
Ran 10rds across the chrono Fri with temps at 41° and harsh winds and velocity was only down about 5fps. I shot it the next morning and Sun morning with temps in the upper 20's with no I'll performance in velocity.
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#6231976 - 03/21/16 08:27 PM Re: IMR4451 [Re: dee]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Love temp stable powders!
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#6232072 - 03/21/16 09:24 PM Re: IMR4451 [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
You and me both. Going to run it a bit more but I really like what I'm seeing.
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#6232658 - 03/22/16 11:56 AM Re: IMR4451 [Re: dee]
Bbear Offline
Tracker

Registered: 11/24/13
Posts: 598
Loc: West Texas
Well, the 30-o6 didn't care for it too much. Best group was only 1.25" and that's only 3 shots. Temps were in the upper 40's with light winds and clear skies.

The 308 on the other hand, liked it quite a bit.



Put 5 into a ragged group. The dot is 1/2"

I'll load some up and check for repeatability and run them across the magnetospeed to see how they gin along.
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#6295001 - 05/11/16 09:54 AM Re: IMR4451 [Re: dee]
dee Offline
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Registered: 04/10/10
Posts: 4665
Loc: Red River way
Played with this a bit in my 7mm-08 Ackley improved. Got some Lapua Palma brass sized and formed. Loaded 45.5gr of 4451 and a 162gr eld match I yielded 2799fps with a sd of 10.7 and a es of 27fps, not the greatest numbers but shot sub moa at 375yds.
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#6295335 - 05/11/16 02:59 PM Re: IMR4451 [Re: dee]
JTPinTX Offline
Woodsman

Registered: 04/01/15
Posts: 182
Loc: TX Panhandle
My supply of H4350 is getting low and I can't find anymore, so I am going to do some testing with 4451 and Berger 130's in the Creed. And maybe with 100 SGK's in the 243.

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#6295411 - 05/11/16 03:38 PM Re: IMR4451 [Re: dee]
DStroud Online   content
Pro Tracker

Registered: 11/02/11
Posts: 1158
Loc: Waco
I am excited about the new Reloder 16 powder that should be good for mid-sized cases like 6.5 Creedmoor.

My standard powder for 6.5 CM 120-130gr has been AR Comp... not top end velocities but moderate recoil and outstanding accuracy across multiple rifles.

In the 6mm Creedmoor with the 105 or heavier for me Reloder 26 has been impressive.


Edited by DStroud (05/11/16 03:42 PM)

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#6295884 - 05/11/16 09:07 PM Re: IMR4451 [Re: dee]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: dee
Played with this a bit in my 7mm-08 Ackley improved. Got some Lapua Palma brass sized and formed. Loaded 45.5gr of 4451 and a 162gr eld match I yielded 2799fps with a sd of 10.7 and a es of 27fps, not the greatest numbers but shot sub moa at 375yds.


Pretty solid load, dee.
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