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Slowest powder for 9mm major


thompsoncustom

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7 hours ago, 57K said:

With cases so full there are definitely going to be compressed. After you load like this you may want to check your loads a day or 2 after to see if they are still the same OACL.

I've set aside a few rounds with a couple different bullets to see if there is any growth and so far nothing. I use a U-die so the tension is bit better than the Dillon I was using.

Edited by Leadpilot
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I found AA7 is slower than 3n38.  AA7 is also much cheaper than 3n38.  I can't comment on if either is dirty but they probably are not worse than HS6.

The other nice thing about AA7 is that it is very dense compared to 3n38.  Thus, AA7 does not fill the case up nearly as fast as 3n38.  You can get a lot more grains of powder before compressing with AA7.

 

Full-length barrel with 3 small holes. 9 major

Berry 147 RN - 6.49gn HS6 - 1.200" - 9mm WIN - 1179.3fps  -173.4PF

Berry 147 RN - 7.2gn 3n38 - 1.230" - 9mm WIN - 1172.7fps -172.4PF

Berry 147 RN - 8.02gn AA7 - 1.230" - 9mm WIN - 1174fps   -172.6PF  (this is an interesting load because is has the same amount of gas as 124 HS6 but lower pressure and softer)

Berrys round nose bullet profile is nice in that you can load much longer than typical bullets.

 

MG 124 JHP- 8.06gn HS6 - 1.170" - 9mm WIN - 1379.5fps - 171.1PF

Berry 24 RNTP - 8.14gn HS6 - 1.199" - 9mm WIN - 1383.2fps  -171.5PF

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On 4/27/2017 at 1:46 PM, blueeyedme said:

Personally, I like WAC for 9maj.  You will need 7.6 or so for a 115 and gas for the comp.

 

7.6????  Wow.  It only takes me 7.2gr at 1.169" with a 115 to make 170PF.  Plenty of gas to work the comp.

 

If it took me more than 7.5gr of WAC to make PF, I'd start looking at other powders.  

 

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On 5/18/2017 at 10:01 AM, andersonj55126 said:

I found AA7 is slower than 3n38.  AA7 is also much cheaper than 3n38.  I can't comment on if either is dirty but they probably are not worse than HS6.

The other nice thing about AA7 is that it is very dense compared to 3n38.  Thus, AA7 does not fill the case up nearly as fast as 3n38.  You can get a lot more grains of powder before compressing with AA7.

 

Full-length barrel with 3 small holes. 9 major

Berry 147 RN - 6.49gn HS6 - 1.200" - 9mm WIN - 1179.3fps  -173.4PF

Berry 147 RN - 7.2gn 3n38 - 1.230" - 9mm WIN - 1172.7fps -172.4PF

Berry 147 RN - 8.02gn AA7 - 1.230" - 9mm WIN - 1174fps   -172.6PF  (this is an interesting load because is has the same amount of gas as 124 HS6 but lower pressure and softer)

Berrys round nose bullet profile is nice in that you can load much longer than typical bullets.

 

MG 124 JHP- 8.06gn HS6 - 1.170" - 9mm WIN - 1379.5fps - 171.1PF

Berry 24 RNTP - 8.14gn HS6 - 1.199" - 9mm WIN - 1383.2fps  -171.5PF

Nah, you are doing it all wrong! Slow powder AND light bullets hahaha ;)

 

10.5 of AA7 with a 115 is pretty sweet.

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9 minutes ago, d_striker said:

 

7.6????  Wow.  It only takes me 7.2gr at 1.169" with a 115 to make 170PF.  Plenty of gas to work the comp.

 

If it took me more than 7.5gr of WAC to make PF, I'd start looking at other powders.  

 

I run 7.8 with mg 115's at 1.165ish. 7.4 when running 121's. Then again I shoot for 173 pf.

Edited by Sarge
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13 minutes ago, Gooldylocks said:

Nah, you are doing it all wrong! Slow powder AND light bullets hahaha ;)

 

10.5 of AA7 with a 115 is pretty sweet.

Ya it is. My barrel is really fast tho so i make 180pf with 10.0 grains still a great shooter tho.

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On 5/19/2017 at 2:14 PM, d_striker said:

 

7.6????  Wow.  It only takes me 7.2gr at 1.169" with a 115 to make 170PF.  Plenty of gas to work the comp.

 

If it took me more than 7.5gr of WAC to make PF, I'd start looking at other powders.  

 

 

It's not about making 170, it's about how you like your gun to run.  I run 7.5 on the MG121 - makes about 176PF and I love how the run runs. Don't be afraid of testing with more powder.  You might like it.

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On 5/22/2017 at 3:15 PM, moparnut88 said:

I've been running 8.7 of silhouette with a 115. Runs well with a bedell comp and 2-3/16" popple holes. What is every one else running with silhouette?


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For me 7.2 with a 124 coated bullet makes 165 Pf

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  • 1 month later...
On 4/26/2017 at 9:32 PM, kneelingatlas said:

SP2 a and 3n38 use interchangeable load data, 9.4gr under a 115 @ 1.161 makes major and is listed in the online load manual :cheers:

 

It doesn't get any better if you ask me!

Which manual and where can it be found? Everything I have or can find only has scant SP2 and 3n38 data. In process of working up 9mm major and have plenty of 3n38 on hand. 

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1 hour ago, kneelingatlas said:

Only thing listed there is for 147's. I have a 2014 Vantec PDF that lists a few more. Current Vantec does not list SP2. 8.7 grains is about the max I can get in a 9x19 case (mixed head stamp) of 3n38. I'm currently playing around with 124 MG RN just as a starting point. Fired from a G17 with a KKM barrel and SJC comp. 8.6gr of 3n38 at 1.160 OAL, I'm averaging right at 1300 fps. Gonna start backing down the OAL to give it a boost in speed/pressure. Guessing I will have to go down to 1.145 to make major with a little extra for safety net. After I can get a 124 dialed in, next experiment will be 115's. 

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43 minutes ago, No Luck said:

Yes and no. I would love to be able to get 9.4gr of 3n38 in a 9x19, but I don't see that happening. However, it does provide starting points. 

 

I've loaded tens of thousands of rounds at 9.4gr of SP2 (same burn characteristics as 3N38, although a hair more dense) I've even gone as high as 10gr!  It's a full case, but if you don't run the press like a drunken sailor you'll be fine.

Edited by kneelingatlas
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12 hours ago, No Luck said:

Yes and no. I would love to be able to get 9.4gr of 3n38 in a 9x19, but I don't see that happening. However, it does provide starting points. 

 

Plenty of people here do it.  You can too.

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19 hours ago, No Luck said:

I'll give it a go. I would rather add powder than shorten OAL. 

9.5 3n38 under a 115 HAP at 1.175 was my load for my first year of open. Ive since gone to 124s and HS6 cause it's easier to load and I like the dot tracking better.

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