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Recent content by Powderandball

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  1. Powderandball

    How much pressure did a Colt Walker revolver generate?

    Does anyone know how many PSI was generated in the chamber of the Walker revolver?
  2. Powderandball

    Blackpowder pressures, calibers, steel and wall thickness

    Do you have any experience with 34CrNiMo6 in quenched and tempered condition? I’ve read multiple steel charts regarding mechanical properties such as high tensile strength etc. and it seem to me that this steel is a good option. For example 4140 has 655 Mpa in tensile strength and 414 Mpa in...
  3. Powderandball

    Blackpowder pressures, calibers, steel and wall thickness

    I’m not making a rifled barrel and I’m not making a shotgun, but a smoothbore muzzleloader, loaded with a patched roundball and pyrodex. I will make the barrel from scratch. I want the walls to be resonable thin, so my idea here is to use a high strength steel and load it with pyrodex/black...
  4. Powderandball

    Blackpowder pressures, calibers, steel and wall thickness

    The charge I’ll actually use for this pistol will be 55-65 grains, however I want a safety factor so I want it to be able to handle excessive loads too, up to 80 grains.
  5. Powderandball

    Blackpowder pressures, calibers, steel and wall thickness

    I’m searching for a proper steel to use for this project. I will drill the barrel from a barstock. I’ve been looking at a steel named 34CrNiMo6+QT, I can easily get my hands on this steel and it’s already quenched and tempered. According to the charts of this material it seem to come as both...
  6. Powderandball

    Blackpowder pressures, calibers, steel and wall thickness

    Does the ”honeycomb” construction of a revolver cylinder make it stronger than a single barrel? The reason why I’m ask is because I’m trying to figure out the minimum safe wall thickness for a single shot black powder pistol. The pistol I’m making will be loaded with a .53 roundball (weight 231...
  7. Powderandball

    Does it matter where the powder is ignited?

    Does it matter if the powder is ignited at the rear or at the front of the charge?
  8. Powderandball

    Short barrel as powerful as long barrel?

    The comparison is intentional. If you increase the powder charge in a too short barrel, to a certain point it shouldn’t increase the velocity since the powder will burn outside the barrel. In this case the increased powder charge create higher velocity in the 5.5” barrel compared to the 8”...
  9. Powderandball

    4130/4140 Chromoly pipe for a muzzleloader barrel?

    What’s the optimal steel for a gun barrel? Which mechanical properties should it have regarding Yield strength, tensile strength etc.? What should one be looking for when picking a gun barrel steel (to be drilled out of solid barstock)? 4140 is a common gun barrel steel, and it’s a kind of...
  10. Powderandball

    4130/4140 Chromoly pipe for a muzzleloader barrel?

    For a muzzle loader it would give the shooter the ability to make heavier loads than you design for, so it’s not a bad idea to use a larger than normal safety factor if perhaps someone else where to load it. Even 30 grains of powder is a very light load for a shotgun, but for black powder the...
  11. Powderandball

    Short barrel as powerful as long barrel?

    Take a look at this chart with velocity, charges and barrel length comparison. Black Powder Ballistics A .451 ball loaded with 28 grains of pyrodex fired from a 5.5” barrel give 108 ft/lbs (146 joule) A .457 ball loaded with 46 grains of pyrodex fired from a 5.5” barrel give 350 ft/lbs of...
  12. Powderandball

    Short barrel as powerful as long barrel?

    So the issue here is that black powder burn too slow, so it isn’t able to propell the bullet properly when fired from a short barrel? (Despite the result of the experiment, the penetration of the water jugs don’t prove that the 3” barrel is as powerful as the 10” barrel when loaded with 40...
  13. Powderandball

    Short barrel as powerful as long barrel?

    According to this experiment Educational Zone #66 - Shooting a Black Powder Pistol - The Box O' Truth A philadelphia derringer (3” barrel) loaded with 40 grains of BP is as powerful as a Kentucky pistol (10” barrel) loaded with 40 grains of BP. ”With a standard load, the Derringer was a weak...
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