iFire's PS90 Load Data

iFire · Post by **iFire** » 08 Jan 2011, 16:14

Had to split thread into two parts- PS90 and FiveseveN data - because I went over the "allowed character limit" :laugh:

VeTTeMaNC486 · Post by **VeTTeMaNC486** » 08 Jan 2011, 19:54

Forest Fire wrote:Ok, let's say I build a ladder of rounds - 3 each of 5 different charge weights - then I would have 15 rounds in the mag for that particular test...

I have loaded as many as 25 or so for testing and as little as maybe 3 or 4.

As would be expected, as I shoot the strings of shots, it is continually moving closer to empty.

The only thing I could think to do differently, if it would even matter, is to load some dummy rounds on the press and use them as fillers so that my mag is "nearly full" during the test strings and see what (if any?) difference it makes. Dummy rounds would just be smart so that nothing gets mixed up...

When I was playing with 55gr fmjs and Blue Dot my mag was popping up and I was only loading 5 in it. Sometimes it would pop on the last shot too (I believe). I did not find any correlation between velocity reading and the mag popping.

iFire · Post by **iFire** » 08 Jan 2011, 21:46

VeTTeMaNC486 wrote:
When I was playing with 55gr fmjs and Blue Dot my mag was popping up and I was only loading 5 in it. Sometimes it would pop on the last shot too (I believe). I did not find any correlation between velocity reading and the mag popping.

Good to know. I might not spend much time testing the difference the number of rounds in the mag makes then...

see this post, it has some ideas of mine about the mag popping up...

viewtopic.php?f=19&t=9672" onclick="window.open(this.href);return false;

338lm · Post by **338lm** » 17 May 2011, 13:10

iFire, any updates for your load ladder on the 5.7? Going for long range accuracy, what would you recommend for the AR57 16" barrel?

iFire · Post by **iFire** » 19 May 2011, 19:42

The updated format will be coming soon - I have been completely revising the layout to include less characters in the "code" :thumb:

iFire · Post by **iFire** » 26 May 2011, 18:44

PS90 Data Updated with my new "format"

Includes Several New Powders as well :thumb:

iFire · Post by **iFire** » 26 May 2011, 20:22

338lm wrote:iFire, any updates for your load ladder on the 5.7? Going for long range accuracy, what would you recommend for the AR57 16" barrel?

I've had some of my lowest Standard Deviations with AutoComp in the 5.0-5.2 gr. Range in the PS90 - That would be a good load to try our for accuracy I believe with the 40 gr Vmax...

There are several other loads you could try as well using powders like longshot, hs6, etc... It just depends how much testing you would want to do...

wyndone · Post by **wyndone** » 10 Jun 2011, 21:21

Hello iFire I just have a quick possibly stupid question for you. All your data is great by the way cause you can't find anything like it anywhere. But my question is are you using small pistol or small rifle primers in your load data, I have heard of people using both. I may have missed it but just wanted to clarify. Thanks for the info!

iFire · Post by **iFire** » 12 Jun 2011, 17:48

wyndone wrote:Hello iFire I just have a quick possibly stupid question for you. All your data is great by the way cause you can't find anything like it anywhere. But my question is are you using small pistol or small rifle primers in your load data, I have heard of people using both. I may have missed it but just wanted to clarify. Thanks for the info!

Small Rifle Primers - Specifically CCI 400

I did have the data on the top before - but it got removed (by me on accident) when I did a complete re-formatting of the data layout

I will add it back to the main post soon :thumb:

Post by **Grantness** » 12 Jun 2011, 18:44

I didn't know Acc#7 ever changed? What's that about?

iFire · Post by **iFire** » 12 Jun 2011, 19:24

Grantness wrote:I didn't know Acc#7 ever changed? What's that about?

You can actually visually tell the difference between the old and the new if you had them both to compare...

When I called them they said they switched manufactures and that it was the "same" - of course as soon as i did a side by side comparison I found out that wasnt true - Velocity is around 100 fps less with an equal load of the new powder...

The new powder 'may' have a higher max than the old powder though and thus be able to achieve the same velocities, but I havent tested it thoroughly enough yet to know for sure...

Post by **Grantness** » 12 Jun 2011, 19:31

Do you know when they changed manufacturers?

iFire · Post by **iFire** » 19 Jun 2011, 06:34

Grantness wrote:Do you know when they changed manufacturers?

Not sure exactly what date they changed it... Below is the info I posted earlier about the change and how to tell the difference

iFire wrote:
Quick note:

1)The "new" A#7 formula will not get you the same velocity as the old formula - expect less velocity at any given charge - The max loads i listed are ok to use because the new fromula is slightly "weaker"... The new formula might have a higher max charge because of this, but it still wont get you up to the same velocity. It just doesnt work as well as the old formula...

If your unsure of which one you have, this is how mine are distinguished:

Old
1) Lot number is a sticker on the bottom of bottle (No silver bar on back of label)
2) DOES NOT have "Made in USA" on side of bottle in red

New
1) Lot number is on the back (right top) of the label in a silver bar
2) On the side of the bottle under Western Powders it says "Made in USA" in red

iFire · Post by **iFire** » 19 Jun 2011, 06:37

Added some 35gr Nosler Lead Free data.

Also added a bunch more shots to the sample size of various loads. My load notebook has SO many strings of shots that I still dont have included in the data. Its just takes so much time to go through and re-read it all :laugh:

rlex · Post by **rlex** » 19 Jun 2011, 12:37

Loaded 30 rounds with 40 gr VMAX with 5 grains of Alliant Steel - shot 15 rounds this afternoon from PS-90 at 75 yds. All 15 rounds cycled properly. Primers and casings looked good. Sorry no chronometer data.

Thanks for the load data.

Rob

iFire · Post by **iFire** » 19 Jun 2011, 13:06

rlex wrote:Loaded 30 rounds with 40 gr VMAX with 5 grains of Alliant Steel - shot 15 rounds this afternoon from PS-90 at 75 yds. All 15 rounds cycled properly. Primers and casings looked good. Sorry no chronometer data.

Thanks for the load data.

Rob

Your welcome - Glad to see that Steel worked well for you - @ 5.0grs with a 40gr vmax its very consistent and safe!

VeTTeMaNC486 · Post by **VeTTeMaNC486** » 20 Jun 2011, 07:19

I have some data somewhere with hs6 and 55gr fmj up to 6.0 grains, was only sample size of one though. It functioned fine and I believe it was around 1900fps, but I would have to find my notes to verrify this. I wonder how the trajectory would compair with ss197?

Seems like the new accurate #7 leaves a lot to be desired compared to the old

Posting from my droid so I reserve the right to have terrible grammer :p

iFire · Post by **iFire** » 27 Jun 2011, 14:27

35gr NTX data added...

kos1966 · Post by **kos1966** » 30 Jul 2011, 16:57

has anyone got load data on universal powder? maybe clays?

Post by **Rapier1772** » 30 Jul 2011, 17:51

For what bullet/use? I've used clays in a subsonic test but it wasn't worth pursuing.

Have you tried the search function? I don't think they are mentioned in the Forum Wiki but couldn't swear to it.

FiveseveNForum.com

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