Is it possible to add a new powfer to Quickload yourself?

[fatelvis]

I would LOVE to add IMR4759 to my available powders on Quickload. I have the most recent version (3.8). I know 4759 is being discontinued, and probably won't be added in the future by the owner, so can I add it? Thanks!

[pme166]

I have never done it but I am in the same predicament with SR4756.

I have read (maybe it was Yahoo's quickload group) that folks have done it by taking a close powder in terms of burn speed and making a new powder and start varying the factors in it. Then they try and match the performance of the powder they are trying to mimic.

My few attempts have NOT been successful, so if you see the insight let us know. Maybe post about how your experiences go.

[fatelvis]

I'm still wondering how to do this, and I would like to add BE-86 now

[45-70 Chevroner]

It appears that no one knows and since it's been two years sence you ask the question maybe you should check with yahoo. I'm kind of pulling your chain here but I don't think anyone does know or does not care. Good luck.

[Toymaker]

To add a powder to your database you "Create a Powder file", input the information and then save it under a special name. I did, special name, IMR SR 4759*EXP* because I use it in my 45-70.
When you use it be sure to change the environmental temperature to what it was when you tested. You may also need to change the Burning Rate Factor to adjust the velocity to your powder batch.
The following information gets me very close.
Heat of Explosion=4040; Ratio of Specific Heat=1.2298; Burning Rate Factor Ba=1.1300; Pro-or Degressivity Factor a0=-0.2255; Progressive Burning Limit z1=0.491; Factor b=1.3790; Propellant Solid Density=0.900
Good luck.

[Don Fischer]

I'm guessing you want to determine your own data? Why? There are so many loads with so many different powder's it's embarrassing!

[dragon813gt]

I'm guessing you want to determine your own data? Why? There are so many loads with so many different powder's it's embarrassing!

You realize this a thread about Quickload, right?

[Tom Myers]

To add a powder to your database you "Create a Powder file", input the information and then save it under a special name. I did, special name, IMR SR 4759*EXP* because I use it in my 45-70.
When you use it be sure to change the environmental temperature to what it was when you tested. You may also need to change the Burning Rate Factor to adjust the velocity to your powder batch.
The following information gets me very close.
Heat of Explosion=4040; Ratio of Specific Heat=1.2298; Burning Rate Factor Ba=1.1300; Pro-or Degressivity Factor a0=-0.2255; Progressive Burning Limit z1=0.491; Factor b=1.3790; Propellant Solid Density=0.900
Good luck.


Toymaker,

I am really glad that I have been subscribed to this thread. A while back, I made a halfhearted attempt to adjust the values that would match my chronograph results on some 38-55 loads for my Marlin 1893 and wasn't too pleased with the results.

Editing my IMR SR 4749 powder file to your values returned results that were ALL within 10 fps of my recorded chronograph averages (adjusted to actual MV). Very impressive.

Thank you for your efforts and input. You can bet that I am writing this down in a safe place.

[M-Tecs]

To add a powder to your database you "Create a Powder file", input the information and then save it under a special name. I did, special name, IMR SR 4759*EXP* because I use it in my 45-70.
When you use it be sure to change the environmental temperature to what it was when you tested. You may also need to change the Burning Rate Factor to adjust the velocity to your powder batch.
The following information gets me very close.
Heat of Explosion=4040; Ratio of Specific Heat=1.2298; Burning Rate Factor Ba=1.1300; Pro-or Degressivity Factor a0=-0.2255; Progressive Burning Limit z1=0.491; Factor b=1.3790; Propellant Solid Density=0.900
Good luck.

Thanks!!!!!!!!!!

[fatelvis]

Thanks! I've got to tweak my 4759 data now too!

[Toymaker]

Tom Myers, M-Tecs, fatelvis - you're most welcome. Glad the values worked out for you.

Tom, how are you doing with your 38-55? I've been looking and testing but not real happy just yet. Mine has a 1:12 twist so it uses the heavier bullets. I'm using a BACO "Money" bullet @ 370 grains that was designed specifically for the rifle. With 30:1 alloy it weighs in at 367 grains ± 1 grain. It also uses the longer 2.125" brass.