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  #1  
Old 09-04-2006, 12:50 PM
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Anyone use IMR 7828 powder for 243 Winchester or 25-06 Remington?

I have two pounds of it and like the idea it is a little faster than H-1000 and a little faster still than Retumbo. I have load data for both H-1000 and Retumbo for both cartridges, both use compressed loads, and published data indicates both have a little head room in the pressure department. My thinking is the IMR 7828 will provide near compressed or compressed loads too and maybe squeak out a little more speed. I'm looking for a place to start with 100 grain bullets in both cartridges.
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  #2  
Old 09-04-2006, 05:35 PM
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flash,
I've used IMR 7828 in the 25-06, but with 120 & 87 grainers; never used the 100's. It grouped well with the 120's, using 52.0 gr of the 7828, CCI 200 primer, and getting around 2840 fps avg. Not "smokin'", but that's what gave me good accuracy in the combo.

With 87 TNT's, it was "full to top of case" in my notes with 62 grains, and getting right around 3300 fps avg.

I messed around with this powder in various loadings and fell back on my standard loads for the 25-06, using 75 gr Hornady HP's using 4064, and 120 NP's using 4350. My recollection was that the powder was fairly well suited to the cartridge, but it wasn't doing better than my other loads. Good luck, your rifle may like it better.
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  #3  
Old 09-04-2006, 08:26 PM
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Always got the best results in my 25-06's with the 115 - 120 gr bullets (especially Nosler BT's) using RL-22 and standard primers.
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Old 09-04-2006, 09:56 PM
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I don't currently have a 243, but I had good success with 7828 in two previous ones - a Winchester 70 and a Remington 7.

I used a max IMR-listed load with the Hornady 100 gr Spire point, and got excellent accuracy and the highest velocity either of those rifles ever produced.
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Old 09-05-2006, 03:32 AM
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Quote:
Originally Posted by IDShooter
I don't currently have a 243, but I had good success with 7828 in two previous ones - a Winchester 70 and a Remington 7.

I used a max IMR-listed load with the Hornady 100 gr Spire point, and got excellent accuracy and the highest velocity either of those rifles ever produced.
Thanks, I didn't see anything listed by IMR and 7828 powder for the 243. Do you have the load weights handy?
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Old 09-05-2006, 06:38 AM
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flashhole,
My IMR Handloader's guide is dated 10/90, and only lists max loads.

For 243 Winchester it lists:
100gr Pointed Soft Point Core Lokt
COL 2.710"
47.0C gr of IMR 7828
Rem 9.5 primer
Rem case

With a 22" barrel they show 3050fps. Pressure is listed as 47900 CUP.

Obviously this is older data, so use with caution. I had superb results with this load!
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Last edited by IDShooter; 09-05-2006 at 06:41 AM.
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  #7  
Old 09-05-2006, 04:12 PM
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I remember when I was working with an IMR powder last winter reading that load data was to be updated in 2006.
I just checked the "news" section of thier website and found the latest news is dated January, 2006.

You might be on your own for awhile flashhole?

Cheezywan
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Old 09-05-2006, 05:16 PM
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Thanks guys, I was looking for a starting point and think I got it from the responses.

Cheezy, that was my take on the situation too.

Interesting that Hodgdon publishes data for Retumbo and H1000. If they follow suit they will have data out next year for IMR powders. I imagine since the purchase of IMR the Hodgdon crew are doing some additional testing.

Don't know about others but I seem to have really good luck with slow powders with moderate to heavy-for-caliber bullets where I end up with a compressed load.

My 25-06 load using 100 gain Nosler Ballistic Tip bullets and a full case of Retumbo is accurate and highly repeatable. H1000 is a super powder but didn't give the same accuracy as Retumbo in my Ruger #1V 25-06. H4831 is a good performer in my 243 but I think I can do better. When I get to it, I'll post my results.
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  #9  
Old 09-05-2006, 06:58 PM
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flash,
Speer #12 lists, for the 243 and 100 gr bullets, 38.0 gr of 7828 as a starting load at 2424 fps, and 42.0 gr of 7828 as a max load at 2715 fps. It has the asterik by this powder, meaning a magnum primer (i.e. CCI 250 or other) should be used.

In the 25-06 and 100 gr bullets, 56.0 gr of powder for a starting load at 2892 fps, and 62.0 gr of powder for a max load at 3222 fps, again, using a magnum primer.

Both max loads are "C" - compressed, and it was for my 87 TNT; I had to lift the funnel up, expecting powder to spill out, but it was just right at the top.
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  #10  
Old 09-13-2006, 08:15 AM
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I do not use it for the 243 Win - it does not burn fast enough - even if you fill the case 100% it hovers around 40k PSI for a 70gr bullet. I have a full container of it - can't seem to use it - only with the heaviest of the bullets (like 100gr) does it leave with modest velocity (~2850). And then using QL to hit a muzzle vibration node, it seems I have to slow it down to be able to hot the nearest node.

I've used it with heavier weight 7mm Rem Mag loads but the accuracy was not that great.
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  #11  
Old 09-13-2006, 12:10 PM
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Been trying to use IMR7828 with my big volume, small bore rifles (6mm/284 and 7mm Dakota), but can't get the accuracy results with it that VVN170 and RL25 give. Have about 1/2 can left - will use it for fireforming cases, I suppose.
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  #12  
Old 09-15-2006, 07:34 AM
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Have Used Imr-7828 In .243w For Several Yrs Now. I Use Rem 9 1/2 Primers And Nos 95gr Partitions Exclusively. Great Results. Try Shooting 3 Loads With 4350 Or 4831 Grab Your Barrel, Let Cool And Then Shoot 3 With 7828, See If You Notice A Difference In Temp. I've Tried This With A 300 Weatherby And A 7mm Rem Mag. My Take On The Test Is 7828 Is Cooler Barrel Temp. Maybe The Barrel Will Last Longer? Anyway , I Use 7828 Now In All 3 Cals.
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  #13  
Old 09-16-2006, 01:13 PM
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Flashhole
I just picked up the 2006 IMR reloaders guide.

243 Winchester
IMR 7828 46.0gr C
100gr Speer BTSP
WW LR primer
Winchester case
3009fps @51,100CUP
24 inch barrel

There is no listing for IMR7828 with 100 grain bullets in 25-06. It is listed for 115 and 120grainers though.

Cheezywan

Edit: Reduce by 10% to start.
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