More Misfire Issues - Investarms 54 Caliber

[Bad Karma]

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.

And in later years TC filled the hole with a screw and ground it flush with the side of the breech plug so that it couldn’t be removed. That’s the first clue…

 

[springfield art]

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.

Interesting.

 

[flconch53]

Interesting.

2 times I have seen the plug screw come out of a gun when fired. The cause was the threads being weakened by loosening and tightening. One inbedded in the hand of the shooter next to the gun that the screw came out of
If you are going to be one of the I always do it this way please get a supply of the screws and replace it often

 

[smoothshooter]

@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.

Chambered breeches =