Home Grown SS 190

Reloading info for the 5.7x28mm

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tal35
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Re: Home Grown SS 190

Post by tal35 » 11 Oct 2013, 04:45

There are guys with smaller amounts avaialable on gunbroker

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grimmond
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Re: Home Grown SS 190

Post by grimmond » 13 Oct 2013, 18:05

Got out and was able to do some more testing with these. I used pulled SS197SRLF factory fresh brass with the black lead free factory primer. Case length was approx 1.135" and OAL set at 1.90".. 6.3gr and 6.5gr True Blue for the tests.

6.3gr was 2157fps / ES=33, SD=12 / Fired and cycled well, minor primer flattening, with these primers this is probably slightly above max or at it.

6.5gr is Beyond Max = 2181fps avg /ES=87.09, SD= 44.37 / I do not suggest taking the loads up this high with factory primers. Had flattening on all and 2 pierced. Stiff recoil.

I plan on retesting with CCI400 primers and starting at 6.0gr and working it back up. In other tests I have found factory primers to flatten and pierce sooner then CCI400's.
Last edited by grimmond on 30 Dec 2013, 17:59, edited 1 time in total.
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tal35
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Re: Home Grown SS 190

Post by tal35 » 13 Oct 2013, 18:46

I updated my post earlier to show that my test results were with an AR15 5.7x28 since It would duplicate the ps90 fairly close.
Also, from what I can tell by playing with the site selling the ss190 bullets, they must have had in the neighborhood of 100k worth. As of now it looks like you could order 60-70k before it said there was not enough for the order.

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Re: Home Grown SS 190

Post by FNaatic » 21 Oct 2013, 07:26

tal35 wrote:
The factory powder load on the ss190 is 6.7 grains of powder with an OAL of 1.5800 to 1.5820 from the samples I had, which is the same as the law enforcement 27grain bullet , also 6.7 grains, from what both my scales say.

.
Does this mean that FN uses the same powder load for the ss190 & ss192 ? Even if the powder load is the same at 6.7 gr, is it a different mix of powders, slow vs fast burning? Since the projectiles are 31gr vs 28gr I was guessing that perhaps the powder mix was different since the projectiles are different weight.

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Re: Home Grown SS 190

Post by tal35 » 21 Oct 2013, 07:42

My thought is that it is the same, I would think they would use the same powder through the whole range of loadings and just change the amount. 27 to 31 isn't much difference, and I have seen as much as 1/2gr difference in 55 or 62 grain bullet bullet weights before. All that says is one bullet may chrono a bit higher. They are both LE rounds, so they are going to be the higher powered in my opinion, but I'm open to thoughts, as that's why we have these discussions.

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Re: Home Grown SS 190

Post by FNaatic » 21 Oct 2013, 08:10

tal35 wrote:My thought is that it is the same, I would think they would use the same powder through the whole range of loadings and just change the amount. 27 to 31 isn't much difference, and I have seen as much as 1/2gr difference in 55 or 62 grain bullet bullet weights before. All that says is one bullet may chrono a bit higher. They are both LE rounds, so they are going to be the higher powered in my opinion, but I'm open to thoughts, as that's why we have these discussions.

Thank you, now I am wondering how does EA bump their 32gr projectiles from the factory 2000fps as seen in the ss190 and have their T6 loads at around 2400fps for the same weight projectiles. Are they using one type of powder throughout or are they tweaking long vs fast combinations...

Reason for my earlier question is that I have some brass and the powder loads from some pulled ss192s and was wondering if I can just reuse the powder to load up some other projectiles and all I would have to do is to adjust the powder load...I was affraid, as a buddy of mine put it, is that FN uses proprietary loads for each of their rounds, so you could not use powder from a 40gr vmax to load up some T6 28gr or 32 gr loads because the 40gr loads would be a different blend of powders, fast vs. slow...

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Re: Home Grown SS 190

Post by tal35 » 21 Oct 2013, 08:19

When I get some time, I will pull a couple 27grain red box (ss19?) and put the 31 grain ap on it, and shoot it from my 16" AR style gun (again, I would rather damage it than an expensive gun).
Ithink it would be quite expensive to blend a powder for each load, keep them separate , etc. instead of using one powder and build on it.
They can to a point play with seating, crimp, primer, etc. for small changes also.

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Re: Home Grown SS 190

Post by Rapier1772 » 21 Oct 2013, 09:20

FNH doesn't even consistently use the same powder for one round, let alone across the board. EA & a few reloaders here have done extensive testing on this.

I would not recommend reusing any of FNH factory powder - except when used for lighting fires :D
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Re: Home Grown SS 190

Post by FNaatic » 21 Oct 2013, 09:24

Rapier1772 wrote:FNH doesn't even consistently use the same powder for one round, let alone across the board. EA & a few reloaders here have done extensive testing on this.

I would not recommend reusing any of FNH factory powder - except when used for lighting fires :D
So a properly loaded True or Accurate powders will be better? Thanks...

tal35
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Re: Home Grown SS 190

Post by tal35 » 21 Oct 2013, 09:29

I would be interested in see their extensive testing to see how their results were derived. Do you have a link to their data to show it?
Although I'm sure their lots differ from lot to lot.

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Re: Home Grown SS 190

Post by hategordon » 21 Oct 2013, 10:54

I was wondering if their was any load data with good starting points for using either number 5 or number 7 powder with these ss190's. any info would be great.

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Re: Home Grown SS 190

Post by Rapier1772 » 21 Oct 2013, 11:38

tal35 wrote:I would be interested in see their extensive testing to see how their results were derived. Do you have a link to their data to show it?
Although I'm sure their lots differ from lot to lot.
You're just going to have to do a lot of reading, it's on here somewhere but I don't the time or patience to look for it. IIRC, Grantness & iFire are two members besides EA who have done testing on it but I forget who else.
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Re: Home Grown SS 190

Post by hategordon » 21 Oct 2013, 11:44

thanks for the help I don't mind looking. thanks for the info to get me started in the search

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Re: Home Grown SS 190

Post by crazymikie » 21 Oct 2013, 12:52

hategordon wrote:thanks for the help I don't mind looking. thanks for the info to get me started in the search
I would stay away from #5 in 5.7x28. It's a lot less forgiving than #7 with pressure spikes. I tried #5 with 35 gr VMax bullets for plinking loads and didn't like it at all. The velocities were a lot lower than the published data from Accurate, but the cases were ejecting pretty far. I haven't had a chance to try #7 yet, however, I've used it in other high pressure loads (9x23 Win) with good results.

I should also note that #7 has changed forumulation, so be careful with load data.

From some quick crunching I did in Quickload using data for the newer formula #7, 6.4 gr #7 with a SS190 bullet seated at 1.570 OAL, should yield about 1825 fps out of a pistol. This is approximately 30k psi and should be safe. 7.1 gr gets you about 2025 fps, and is around 40k PSI.

Be careful and look for pressure signs. I take no responsibility for this load data since I haven't tried it myself.

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Re: Home Grown SS 190

Post by Buffman » 21 Oct 2013, 19:48

Someone said SS198 has 6.8gr of powder in the 2013 lot. This was from a entire pulled box average.

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grimmond
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Re: Home Grown SS 190

Post by grimmond » 21 Oct 2013, 22:15

hategordon wrote:I was wondering if their was any load data with good starting points for using either number 5 or number 7 powder with these ss190's. any info would be great.
A good starting point is 5.8gr with Accurate #5, CCI400 primer, case set to 1.135", and O.A.L. set at 1.585"-1.590".
I set mine at 1.590"( I do not have any issues with loading nor feeding at this length)
I highly recommend you be extremely accurate with your powder measuring with this powder. It is not as forgiving as others. But with care you will have no problems. I have been using it for testing various loads for over a year now.
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grimmond
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Re: Home Grown SS 190

Post by grimmond » 21 Oct 2013, 22:20

Buffman wrote:Someone said SS198 has 6.8gr of powder in the 2013 lot. This was from a entire pulled box average.
I only averaged 6.5gr of powder from a box I pulled of SS192 dated 2007.
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Re: Home Grown SS 190

Post by hategordon » 22 Oct 2013, 03:50

Thank you for all the info. I am grateful. I have both #5 and #7 powders and have had good luck loading the 45gr Sierra softpoints and shooting them in my AR-57 and FnH pistol.

I purchased 2k of the SS190's and am looking to have some fun loading and shooting these.
I have been loading other rounds for a few years. and will be checking each load on theses. It will take more time but its worth it to make it right and safe.

I am grateful for all the help and insight you guys have given me on the Round. This is a great forum and glad I found it.

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Re: Home Grown SS 190

Post by Buffman » 22 Oct 2013, 05:36

grimmond wrote:
Buffman wrote:Someone said SS198 has 6.8gr of powder in the 2013 lot. This was from a entire pulled box average.
I only averaged 6.5gr of powder from a box I pulled of SS192 dated 2007.

From Recon on FNF
The 2013 has 6.8gr of powder consistently pulled from the same lot that Buffman used for his tests
I'm going to pull a 2007 Lot tonight..

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grimmond
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Re: Home Grown SS 190

Post by grimmond » 22 Oct 2013, 20:24

Did they document they characteristics of the powder when they pulled the rounds?
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