View Full Version : Black powder data

August 29, 2010, 03:49 PM
Black powder dataCan I get a sticky on this?
Maybe it is because I am away from my blackpowder guns, but this seems like a good idea. I would like to collect some data. I am hoping that by analyzing multiple loads with multiple data points, I can get a deeper understanding.

Please list your data in the following way.
Weight of projectile in grains
Weight of powder in grains (even though we are measuring it by size)
Size of powder (FFg, FFFg)
Brand of blackpowder, or state if you are not using real blackpowder.

Caliber in inches
Length of barrel
Lock (Flint, Cap, match)

Velocity in FPS
Other (Accuracy, recoil, un-burnt powder)


the Black Spot
August 29, 2010, 04:03 PM
177 grain roundball.
60 grains of schuetzen 3F black powder
33 inch barrel
.50 caliber
1-48 twist

not sure of velocity, hope someone can tell me. it will shoot 1.5" groups at 50 yards.

August 29, 2010, 07:04 PM
Just buy a Lyman Black Powder Handbook study away. Everything you're asking for is in there.

August 29, 2010, 07:53 PM
"Just buy a Lyman Black Powder Handbook study away. Everything you're asking for is in there."

Very cool, so this can tell me what an optimal load for a barrel length, and bore diameter. (I expect velocity to increase constantly up to a point and then there will be diminishing returns. I expect powder will not burn up in the barrel.)

Or tell "the Black Spot", the expected velocity is for his load?

August 29, 2010, 08:14 PM
11 inch pistol .32 cal round ball weight I think 50 grs. 17.5 grs Goex FFF
Black Powder .010 patch lube wet. 1200 fps. Accuracy load

August 29, 2010, 08:54 PM
Lyman GPR Flintlock. 32 inch barrel 1-60" twist.
Primed with FFFFg powder - about six grains.
.490 cal Lead round ball (177 grains)
0.010 lubed patch.
90 grains of FFg Goex
0.030 Walters Wad over the powder.
Muzzle Velocity = nominal 1900 fps.
Accuracy - three consecutive shots at 100 yards, benched:

August 29, 2010, 09:02 PM
45 cal Flintlock rifle 32 inch barrel 90 grs Goex FF .454 round ball .022
Teflon coaded patch 1-60 twist 2,000 fps 100 yds 5 shots.


August 30, 2010, 02:06 PM
kwhi43: Now that is a nice target. Good shootin'.


Doc Hoy
August 30, 2010, 03:37 PM
Mine is somewhat old but the data is good.

You have to be careful because there are some errors. In one case a bullet weight is listed incorrectly for an entire table.

Velocity is provided. You may not find ballistic data for every barrel you have in mind but it will be close.

August 31, 2010, 07:33 PM
Looks like the book is in my future, but until I get it.....

Can someone look up the velocity numbers for a Rem 1858? I just need a max load and if they have one a most accurate velocity.


Doc Hoy
September 1, 2010, 06:19 AM
My book, printed in 1974 did not use a Remington for tests. They used an 1860 Army with a .451 round ball.

With G-O fffg they got:

Gr. Vel.
19 706
22 752
25 805
28 885
31 933
33 979
37 1032

They called 37 heavy enough to use a "special pressure revolver."

September 1, 2010, 08:23 AM
Don't get hung up on data and numbers.
BP shooting is not modern gun shooting.
As long as what you are doing is safe, all that counts is what works for you.
There are too many variables and puzzling unknown variables for strict loading rules to apply perfectly.
Join the NMLRA (National Muzzle Loading Rifle Association) and read the magazine.
The Lyman manual is interesting but it is not gospel.

September 1, 2010, 08:51 PM
Rifleman1776, I understand what you are saying, but then again no. Although the book numbers are just that "book numbers" and may or may not match my numbers......

I have been studying terminal ballistics for many years. I have done practical tests. I have done book studies. I look at it from a historic prospective. I look at it from a hunters prospective.

In this case, I was just mentally comparing it to 45LC and 45ACP.