Blackpowder (blackhorn 209) in a Smokeless Barrel = Danger
Dec 3, 2023 14:34:03 GMT -5
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buckeye68 and jarhead TX like this
Post by ballistic on Dec 3, 2023 14:34:03 GMT -5
I posted this in the (.40 caliber discussions thread) and also the (modern black powder and sub guns thread)
Here’s a few pics using some magnum doses of (blackhorn 209) powder that would normally be fine in a .50 and a .45 muzzy. But in a .40 the pressure curve changes dramatically. Yes that’s the head of a direct ignition breechplug and the experienced shooter backed off the powder charge 15 grains from the charge used in the modules. This muzzy was built with a 1.25” shank and luckily there wasn’t an injury. After getting the stuck and broken plug removed from the barrel - it was put back together and everything is fine.
FYI
Blackhorn 209 has a Propietary blend of powders that can include up to 85% of the ingredients found in smokeless powders (sds sheet data).
And that’s why I’m posting this on the smokeless powder forum.
Anyway - pressure is a crazy animal that can be found by adding a few grains of powder and there it is. And be extra cautious with blackhorn 209 powder in any muzzleloader with smaller calibers generating more pressure.
FYI -the load used would be considered a magnum load by weight (120 grains) for todays 50 caliber inlines
Be careful with blackhorn 209 in any barrel.
Module pressure signs
Direct ignition pressure signs (head blown off tue plug)
Here’s a few pics using some magnum doses of (blackhorn 209) powder that would normally be fine in a .50 and a .45 muzzy. But in a .40 the pressure curve changes dramatically. Yes that’s the head of a direct ignition breechplug and the experienced shooter backed off the powder charge 15 grains from the charge used in the modules. This muzzy was built with a 1.25” shank and luckily there wasn’t an injury. After getting the stuck and broken plug removed from the barrel - it was put back together and everything is fine.
FYI
Blackhorn 209 has a Propietary blend of powders that can include up to 85% of the ingredients found in smokeless powders (sds sheet data).
And that’s why I’m posting this on the smokeless powder forum.
Anyway - pressure is a crazy animal that can be found by adding a few grains of powder and there it is. And be extra cautious with blackhorn 209 powder in any muzzleloader with smaller calibers generating more pressure.
FYI -the load used would be considered a magnum load by weight (120 grains) for todays 50 caliber inlines
Be careful with blackhorn 209 in any barrel.
Module pressure signs
Direct ignition pressure signs (head blown off tue plug)