More Misfire Issues - Investarms 54 Caliber

Grenadier1758 said:

The hole is drilled to make the flash channel from the nipple seat to the powder chamber. After the chips are cleared from the manufacturing of the breech plug or drum, that hole is plugged by a threaded plug and once the chips are cleaned from the flash hole there is no longer any reason to remove that treaded plug. There is no compelling reason for that plug to be removed during cleaning of fouling after shooting the gun. It is done, of course and many drums and breech plugs have been compromised because of that. Many have not.

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Grenadier1758 said:

The hole is drilled to make the flash channel from the nipple seat to the powder chamber. After the chips are cleared from the manufacturing of the breech plug or drum, that hole is plugged by a threaded plug and once the chips are cleaned from the flash hole there is no longer any reason to remove that treaded plug. There is no compelling reason for that plug to be removed during cleaning of fouling after shooting the gun. It is done, of course and many drums and breech plugs have been compromised because of that. Many have not.

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springfield art said:

Interesting.

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Grenadier1758 said:

@Turtle2, I've got to agree with the above posts. Misfires are almost always related to an obstruction in the fire channel. A rigorous cleaning of the InvestArms chambered breech is certainly due. Is the percussion cap firing? The caps may be bad. We have seen reports here on the Forum that some of the new CCI caps have been less than reliable. Is the nipple mushroomed at the cone. They are cheap enough to just go ahead and change it out. The other cause is associated with synthetic powders that are safe to use and available but require a much higher ignition temperature. The high ignition temperature coupled with a tortuous path from the nipple seat and a possible fouling in the chambered breech make reliable ignition a challenge. Rarely, there will be shards of metal left in the flash channel causing a partial blockage.

Now, I believe that the InvestArms rifle will have a hooked breech. The barrel can be removed for a vigorous flushing of the barrel and breech. Still the chambered breech needs to be verified clear.

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Pirate's Son said:

Replace your No. 11 nipple with a Musket nipple. I've been using Musket caps on my two ,54 Renegades and .54 Great Plains pistol for 20 years. Not a single misfire.

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Fishslap said:

Millions of rounds have probably been shot successfully through this style of gun with the stock ignition system using #11 caps. I doubt that’s the root cause of the OPs issue.

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smoothshooter said:

Chambered breeches =

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Bad Karma said:

I don’t understand this… frankly I don’t think I even own a non chambered breech. Ignition is as good and consistent as any inline given the use of appropriate powder.

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smoothshooter said:

Chambered breeches work better if you are always able to remove the barrel and flush it with a with a bucket of water, then spend a fair amount of time drying them out. Sometimes that is not possible or practical.
A lot of shooters do most or all their shooting in a structured environment which is more conducive to the rod-and-flush method. They go to a range, fire several shots, take extra time clean and dry, and go home.
Once they clean, they are done for the day/week/ year.

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Bad Karma said:

I don’t understand this… frankly I don’t think I even own a non chambered breech. Ignition is as good and consistent as any inline given the use of appropriate powder.

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