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Autocomp 9mm Major w/autocomp

#1 User is offline   Two Delta 

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Posted 19 April 2009 - 05:37 AM

I finally got out to the chrono with some 9's using Winchesters new autocomp.I was surprised to find that it could make major without signs of high pressure. Anyway here is the load I came up with.

Sti Trubore 9mm one piece comp/barrel.

Mixed once fired brass

Winchester small pistol primers

7.0gr. Winchester Autocomp

124gr. RN. Precision Delta

C.O.A.L. 1.170

1346.3 FPS. average of 5 shot group.

extreme spread 16.2 FPS.

166.904 PF.

It shot very well with little dot lift if any. I think I'll use this for a while because its available and its cheap compared to vit. It's not smoky or flashy but I don't know how dirty it is yet.
A-62349

#2 User is offline   Chris Keen 

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Posted 19 April 2009 - 05:57 AM

Very good info, but I would get that Power Factor a little higher than 166. Try increasing it in small increments until you can safely get it to 171 and you should be good to go.

Keep us posted. :)
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#3 User is offline   Txkid 

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Posted 21 April 2009 - 11:05 AM

Two Delta,

Thank you for the information, I was looking for this information for sometime.
I guess I need to get some :cheers:

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#4 User is online   rupture 

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Posted 20 November 2009 - 06:13 PM

Anyone have other good reviews on Autocomp?

#5 User is offline   shootingchef 

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Posted 20 November 2009 - 06:49 PM

I use it!

7.9 grains behind a 121 IFP from MG in my SV 38SC makes 170 PF.
very clean
cheaper than VV.
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#6 User is offline   Neomet 

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Posted 20 November 2009 - 07:57 PM

View Postshootingchef, on Nov 20 2009, 07:49 PM, said:

I use it!

7.9 grains behind a 121 IFP from MG in my SV 38SC makes 170 PF.
very clean
cheaper than VV.



Recoil/dot movement compared to Vit?
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#7 User is offline   smokshwn 

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Posted 20 November 2009 - 08:07 PM

How full are your 9mm cases when loading? any spillage on the machine?
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#8 User is offline   shootingchef 

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Posted 20 November 2009 - 11:33 PM

View PostNeomet, on Nov 20 2009, 08:57 PM, said:

View Postshootingchef, on Nov 20 2009, 07:49 PM, said:

I use it!

7.9 grains behind a 121 IFP from MG in my SV 38SC makes 170 PF.
very clean
cheaper than VV.



Recoil/dot movement compared to Vit?



When I can get the grip right, dot does not move out of the glass.

I compared the AutoComp load to a batch of 7526 loads that make 169 out of my SV and it was worlds better. So little flip and the dot barely moves. I am very pleased with this load. Lee Neel worked it up so he has the specifics.
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#9 User is offline   shooterbenedetto 

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Posted 21 November 2009 - 02:31 AM

View Postsmokshwn, on Nov 20 2009, 08:07 PM, said:

How full are your 9mm cases when loading? any spillage on the machine?


powder fills half the brass..no spilage.

#10 User is offline   shooterbenedetto 

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Posted 21 November 2009 - 02:36 AM

I have been using this powder on my 9major since June. Its awsome and very cheap. 8lbs for 112.00
Dot hardly lift and its clean. I also use it on my V12 Tans 8.1g for 38 super.

9mm major
7.0
aol 1.145
chrono at 1380s

SB

#11 User is offline   runNgun 

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Posted 24 November 2009 - 10:09 AM

Changed from Vit N350

Got a sample after the World Shoot, been in use since Feb. 7.0 on my scale (manually drop 10 charges=70 gr), MG 124jhp, 1.150 oal 172pf at Nationals, Ohio, Area2.

Clean enough, Soft enough, Consistent enough, Flat enough, and CHEAP enough.

Plenty room in case, no pressure signs.

#12 User is offline   dkleskiw 

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Posted 24 November 2009 - 11:05 AM

So this question might be better off in the 40 section...but I use it in my Bedell Open 40. It's not clean. At all. I'm using a SPP, should I try SRP? Magnum primers? Incomplete burn? I'll search later, but I'm just curious what the 9mm guys are thinking.
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#13 User is offline   Joe4d 

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Posted 24 November 2009 - 12:37 PM

I think this is pretty cool, when this powder was first announced we all assumed it was too fast to make major judging by the recommended charge weights and comparing it to the burn rates of other powders, Quite a few of us thought Winchester missed the mark coming out with an Auto comp powder that wasnt suited for playing. So I guess it seems like Winchester might have got it right after all.

#14 User is offline   ong45 

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Posted 30 November 2009 - 03:45 PM

Tried out a batch today, 7.1 grains behind a MG 124 jhp , col of 1.170 mixed brass and wsr primers.

1415 fps average with a 13 fps extreme spread for 175 pf out of a 5" open gun with 4 small holes in the barrel . Primer very slightly flattened.

Hardly any unburnt flakes in the gun after 250 or so rounds.

Some caked on grime on the feedramp that took moderate scrubbing to get out.
James

#15 User is offline   joecichlid 

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Posted 30 November 2009 - 05:41 PM

Although I haven't tried any yet I hope to soon out of my .38 Super. One thing I have noticed is that stuff is very dense, an 8 pound keg is the same size as most companies 4 pound kegs (noticed this when I picked some up for a prize table).

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#16 User is offline   Alan Adamson 

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Posted 03 December 2009 - 06:20 PM

Just to add to the list.

7.2gr Autocomp
Win Brass
124gr MG JHP
1.175 OAL

average for 8 shot group - 168pf

Std Goverment Storm Lake barrel in an Anglin open gun, no holes except comp

#17 User is offline   CocoBolo 

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Posted 03 December 2009 - 08:23 PM

I got some last year when it first came out and everyone said it wouldn't work so I just traded it off for some bullets.

I should have given it a run. Well only 6 more pounds of Accurate 7 to shoot up, won't take long at 10.5 gr a hit.
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