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Old 09-16-2014, 19:32   #1
Kwesi
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Need recipe for Alliant 2400: 180gr FMJ

I have some 2400 but I've never used it for pistol. Is this a good choice for a warm 10mm load? Only one of my manuals has a recipe for this combo but it is compressed at 12.x grains.

Anything I need to know about compressed loads? Never loaded one. I like G20 loads around 1200 FPS. I will also be using a G29 3rd gen.

Thx!
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Old 09-17-2014, 07:32   #2
tom mac
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2400 I've run with 180 fmj @ 12.2 grs.... (as I wanted just to use up the powder)
Its a mid load 1100fps +/-

Problem with 2400 is you'll prob run out of room in the case hitting the 1200fps+ upper range... your better off with Blue Dot ( or a couple other powders) which will easily get you above the speed you want for about 2 grs less powder.
A 180 gr fmj with 10.5 grains of Bdot (book max is 11grs) is an upper mid load at about 1250fps.

Take a trip over to 10mm-firearms.com for many work ups in almost all usable powders

Take a look at the older manuals below... it will give more info re 2400 if thats what you what.
http://www.castpics.net/LoadData/Fre...M/Alliant.html

Last edited by tom mac; 09-17-2014 at 08:10.. Reason: manuals
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Old 09-17-2014, 08:55   #3
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mac: exactly! I use Blue Dot, Power Pistol and Longshot but I have some 2400 that I picked up for my first 45-70 Gov't loads and thought I might use it up having heard it is real good for 10mm. Apparently it is a very accurate load per Wee Willy. Hope he chimes in.
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Old 09-17-2014, 09:00   #4
WeeWilly
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The highest I have gone with 2400 was 12.9grs. My results with this load by barrel length was stock G29 = 1136fps, G20 = 1205fps, 1911 (5") = 1247fps.

Just saw Kwesi's post, yes, some of the most accurate 10mm rounds I have ever loaded was with 2400. Some of that probably due to the load density (no free space in the case), also some of that might be the effect less recoil has on the shooter as you keep pulling the trigger. 1300fps is a big boom.

As with most other slow powders, how long the barrel matters a lot on this one.
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Old 09-17-2014, 09:33   #5
tom mac
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Quote:
Originally Posted by WeeWilly View Post
snip...
As with most other slow powders, how long the barrel matters a lot on this one.
+1 Really do think "size matters" with this powder... seems to work well in longer barrels and heavy bullets.

It will make good target loads without trouble tho with the 180 heads... just a bit slower than you were asking.
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Old 09-17-2014, 09:46   #6
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Quote:
Originally Posted by tom mac View Post
+1 Really do think "size matters" with this powder... seems to work well in longer barrels and heavy bullets.

It will make good target loads without trouble tho with the 180 heads... just a bit slower than you were asking.
After my experimentation, I am glad I stopped using it and saved it for my magnum revolver loads. It is the perfect powder to get things going hot "enough", when you need a break from H110/W296..

Blue Dot is another that seems to really shine as the barrel length goes up. I have never gotten the lowest SD's from BD, but it doesn't seem to matter all that much on paper, at least to the ranges I shoot handguns.

Just yesterday I was playing with some loads for my new G35, shooting 175gr LSWC's at 800fps, drilling the bull out of the target rapid fire (that gun is a genuine joy to shoot).

When I ran out of my gamer G35 loads, I switched over to a 10mm 1911 and some 180gr HAP - 10.5gr Blue Dot's. After I quit focusing on the recoil difference, boom and flash, I realized I was getting the same accuracy out of that 1250fps pill as I was from those gamer loads. Very satisfying stuff. Blue Dot really is a terrific 10mm powder.
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Old 09-17-2014, 10:52   #7
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So with 12.x grains filling the case (compressed load) do I need to lengthen the COAL? I currently load 1.256-1.260 due to component variances.
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Old 09-17-2014, 11:30   #8
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I load all my 10mm to 1.260", with the exception of some lighter loads where I want a little more pressure for improved consistency in ignition.

On compressing powder, I have never seen any difference in performance between compressed and uncompressed powders, other than SD's seem to drop as you remove space in the case. There is a limit to this as when you start deforming the bullet with the seating stem, accuracy will start to suffer, especially on the longer shots.
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Old 09-17-2014, 12:58   #9
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WeeWilly: with non virgin brass and slight bullet variations my loaded rounds always fall within a range of Appx 5/1000. I'm more concerned with safety with compressed loads since I've never loaded any. That said would you expect 1.255 to be of concern?
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Old 09-17-2014, 14:05   #10
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Quote:
Originally Posted by Kwesi View Post
WeeWilly: with non virgin brass and slight bullet variations my loaded rounds always fall within a range of Appx 5/1000. I'm more concerned with safety with compressed loads since I've never loaded any. That said would you expect 1.255 to be of concern?
Not at all. When I say 1.260", I mean that is my nominal target. There are a lot of things that introduce variances. I even see OAL variance based on whether I have a full shell plate or am loading one at a time.

Even with the fastest powders, .005" is not going to make as much of an impact as say the variance in primers (and they don't matter as far as safety goes). With powders as slow as we are discussing, it takes a lot more depth change (like setback kind of changes) before you even see it on a chronograph.
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Old 09-17-2014, 18:27   #11
OhioGlockMan
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I believe the case capacity of the 10mm is just a hair too small for 2400 to give optimum performance, I use it in 357 magnum which has a lot more capacity and it really shines in the 357
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Old 09-18-2014, 10:54   #12
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Originally Posted by OhioGlockMan View Post
I believe the case capacity of the 10mm is just a hair too small for 2400 to give optimum performance, I use it in 357 magnum which has a lot more capacity and it really shines in the 357
I couldn't agree more. .357M and 2400 a match made in heaven.

Another complicating factor for 2400 and 10mm is I think they have reformulated the powder over the years and it may not have quite the energy density it once did, that is, I think it takes a little more powder today than it did say 20 years ago for the same result. I think the payback is it also seems a little more stable, less "what the heck happened with that shot", kind of thing.
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Old 09-18-2014, 21:00   #13
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I don't see a problem going to 1.2500" with the 2400 loads, the pressures are still lower based on the load data from Alliant in 2006, I don't see any reason why the data listed for the 190 gr couldn't be used for the 200 grain bullets either...

The data for 2400 is to the far right of this sheet
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