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Discussion Starter #1
The Chronograph worked fine today after cleaning connections, so data was collected.



9mm from my M+P 9c compact. All data was gathered from 12 round strings.



124 Gold Dot over 5.0 of win 231:

Ave velocity- 1106 fps

Extreme spread- 52 fps



Same bullet over 5.0 gr of Bullseye:

Ave- 1079 fps

ES- 27 fps



Again, over 4.9 gr of bullseye:

Ave- 1025 fps

Es- 38 fps



I would like to find 1200 fps with this bullet. Neither powder is going to do

that, clearly. As soon as I can get some 'Power Pistol' and load up I will

post the results. Also clear... from both Chrono and target data, the max

charges are more consistant and more accurate in this pistol. I am thinking

a better crimp may be in order as well. I do not have a taper crimp for

the 9mm yet (on order) so I am using a light roll crimp. I think it needs more

case tension in this short barreled pistol.



Oh..... from the 'Chrono don't lie' department, comes this:



A .38 special load using a 125 XTP bullet, one I had always thought rather

'snappy' as it was a max load of 231 for the bullet weight.....

Average velocity of only 718 fps! What a dog! The book suggested it should

scoot out at closer to 900 fps.
 

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Generally speaking you will get your best performance from a somewhat slower powder than Bullseye or 231, they are best utilized for low to medium power loads, Power Pistol is a good choice for best velocity in your application.



KEEP IN MIND that a hot load developed in cool or cold weather can become TOO HOT in hot weather, cold temperatures generally decrease velocity and pressure somewhat, high temperatures tend to increase it.
 

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Discussion Starter #3
I am looking for what will suit this short barrel the best. Not a lot of room

to burn powder in!



I have read studies that 'prove' most of the powder is burnt in the first

few inches, as long as the load combination gets the pressure into optimum

operating range for that powder. Hmm..... maybe 'tis true.....





I am aware of the temperature issue. That little trick is good for 100fps

on my 22-250 depending on the powder I use. It's also good for flat primers

and other slight pressure signs.



The temperature variation is one reason the ammunition I am going to chrono

stays in the shade in summer, or an inside pocket of my down vest in winter.



This particular run with the 9mm, both ammunition and pistol were carried

inside the vest before shooting, not laid on the bench.



Slipping off today to buy some Power Pistol if I can find it..............
 

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(Edited to add these loads are for 40 S&W not 9mm, I got distracted and went off caliber.)



I had tried Blue Dot behind 165 gr Berry's plated bullet, I was getting what I thought was a little unburned powder, then I shot it standing behind a white bench at a Bullseye pistol range, very quickly the white bench was covered by unburned powder! I have since switched over the Unique, but I'm going for a mid range load, not trying to make a power factor or anything like that, just a pleasant casual shooting load.



Using 8 gr of Blue Dot behind a 165 gr Berry's plated bullet I was getting an average of 946 fps, with a SD of 30.3, I switched over to 5.6 gr of Unique, average of 944 fps and a SD of 20.6.
 

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Discussion Starter #5
I was not able to find Power Pistol today, but did pick up a pound of Blue dot

to play with. One load book shows that as 'high velocity' powder in this cartridge.



I had thought Unique or even Blue dot to be a bit slow for a 3" barrel compact

small bore pistol. That is why I have been looking at 231 and bullseye.



I'll give the Blue dot a try, and I suppose I'll order in some Power pistol too.

I'd like to see 1200 with this 124 Speer Gold Dot bullet, but failing that

I won't mind sticking with the 5.0 of Bullseye. That shoots clean and

VERY accurate, with velocity well over 1100. 1.25" at 50' when I take my time.
 

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I think Blue Dot will work better in a higher charge, I think it's one of those powders that if you don't load it at least on the 'warm side' it's not going to burn all the powder.
 

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I have never tried blue dot for 9mm I always figured it to be too slow. Makes for some tremendous hot rod 38 super loads. I have used a good bit of power pistol and I think you will find it to be just what you are looking for.



if you have not already done so check out their web site alliant has their load data online easy to figure out which of their powders may get you to where you want to go.
 

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For 9mm I have used bullseye, WW231 and Unique, mainly 231.



I've used 5.2 gr of Unique under a Zero 115 gr JHP with a Federal primer.

Average velocity 1154 fps Beretta Mod 92 FS, that's a 5" bbl if I remember right

SD 18.5 fps
 

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Discussion Starter #9
Ya Dan, I have been printing out the data from the Alliant web site and filing it away.

It's there that I found the load data I just used tonight with Blue Dot! It's going to be a

week or so till I can get to the range...... sigh.



I like the pressure figures shown with the Blue Dot data.



Power Pistol looks like what I want, theres just not any available around here

that I can find. Guess Midway will get an order next week.
 
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