Load Testing: Alliant Sport Pistol powder

[IDescribe]

Anti-2A weatherman says I won't be testing anything outside tomorrow. 

 

You might want to record the number of cups of coffee you had while loading now.  You might not remember by the time you get to shoot these. 

[Moken]

Has anyone established where SP is on the burn rate chart? Interested for 9mm.

[painter]

Has anyone established where SP is on the burn rate chart? Interested for 9mm.

I haven't found it on any burn rate charts.

Alliant calls it medium-fast.

[IDescribe]

It?s somewhere between N320 and W231/HP38

[painter]

It?s somewhere between N320 and W231/HP38

Is that published, or reported?

[Moken]

It?s somewhere between N320 and W231/HP38

Thanks for the reply. Wow! Even faster than Unique. Interesting. Can't wait to see more range reports. That in my opinion points to its effciency. I was curious seeing the velocity with relatively low charge weight.
Very interested.

[Scarlett Pistol]

I posted pictures earlier on in this thread showing how clean Sport Pistol burns. I?ve run over 2k rounds since then and most were through my SP-01. I?ve cleaned my barrel once, the feed ramp twice. Nothing else in it has been cleaned. No malfunctions and it?s way cleaner than any other time I?ve done this. This is the powder for Joe L!

[timetofly]

It?s somewhere between N320 and W231/HP38

Is that published, or reported?

According to Alliant, somewhere between American Select and GreenDot.

[painter]

It?s somewhere between N320 and W231/HP38

Is that published, or reported?

According to Alliant, somewhere between American Select and GreenDot.

According to the burn rate charts I've seen, both N320 and 231 are faster than American Select and Green Dot.

Is it on a chart anywhere?

[IDescribe]

Th Hodgdon burn rate chart has American Select faster than Solo 1000, WST, N320, AA2, and HP38/W231, and it has HP38/W231 almost as slow as Unique.  Then, Vihtavuori has HP38/W231 as fast as N310 (which it isn't).  Viht also has N320 as fast as AA2, which it isn't, at least not in 9mm.     Western has American Select and N320 on the same tier.

Relative burn rates can flip flop when you change calibers, and that's one of the reasons the different company's burn rate charts don't match.  At this point, I pretty much only care about burn rates within a given caliber, and if two powders take the same powder charge to get to roughly the same velocity in the same caliber with the same bullet, I'd say they're roughly the same burn rate (in that caliber).

In my data, N320 and HP38 are very similar in 9mm in terms of what it takes to get to a particular velocity with a particular bullet.  And American Select is a little faster, very similar to Bullseye and Titegroup.  In jmh013's Sport Pistol data, it looks like Sport pistol is just a hair slower than Titegroup. So maybe SP is also a little faster than N320 and HP38?

[Moken]

IDescribe, I see what you mean. That's why a powder maybe better in 9mm than .45 AP? Pressure would have to effect burn rate.
I've become a fan of Longshot in 9mm and .40 but bought CFE Pistol for the .45 AP. Looks like good results are coming out for SP for the 9mm.

[dave33]

I just got a lb of sport pistol and shot a little with it yesterday.  Since Ive never loaded with it before only loaded up a total of 50 rounds with it over a couple different charge weights but my initial experience with it was good.  Seems to be very clean and pretty accurate also, looking forward to more extensive trials.

Also got a lb of the new Winchester 244, Vectan 9 1/2, and VV N330, plan to put them all through their paces, pick a winner, buy in bulk, and shoot a lot.  

[timetofly]

According to the burn rate charts I've seen, both N320 and 231 are faster than American Select and Green Dot. Is it on a chart anywhere?

Here is what I received from Alliant.  I took out the name of the person responding....

We can only answer this as to where the Sport Pistol falls in on the Alliant burn rate chart. The Sport Pistol falls between American Select and Green Dot. Keep in mind, and you most likely know this, burn rate charts are only relative.
Thanks,

Technical Services Rep
Alliant/Blazer/CCI/Speer

[jmh013]

Range Report for new test loads for Sport Pistol from 3.7 to 4.0 in 0.1 increments. Same parameters as before with the exception these were all 10 shot strings. Pistol was my SP-01, the bullet is Precision Delta 124gr JHP, Primers Federal SP, mixed range brass, OAL 1.095 +/- .002. Weather conditions were 54F and BP 30.12 inHG. There was also a slight difference in the distance of the chrono versus last time. First test chrono was 10ft and this time it was about 7ft.
 
Precision Delta 124gr JHP
Sport Pistol 4.0 gr

AVG 1070.6
StdDev 15.39
Min 1052
Max 1106
Spread 54
 
Precision Delta 124gr JHP
Sport Pistol 3.9 gr

AVG 1034.5
StdDev 16.95
Min 993
Max 1053
Spread 60

Precision Delta 124gr JHP
Sport Pistol 3.8 gr

AVG 1029.1
StdDev 13.46
Min 1006
Max 1042
Spread 36

Precision Delta 124gr JHP
Sport Pistol 3.7 gr

AVG 1017.6
StdDev 9.24
Min 999
Max 1029
Spread 30

I may have had a light load in the 3.9 group as you can see a speed of 993 as the Min. Taking that out I get a 9 shot AVG of 1039.1. I do think the SP powder is cleaner than TG.


[Mods added missing information]

[Practical Shooter]

Thank you for your work, I know how it is demanding to keep accurate record of everything.
Would you be trying 4.1gr and above or settle on what you have?