More Misfire Issues - Investarms 54 Caliber

[Turtle2]

I continue to fight misfire issues with my 54 caliber. Years ago I switched out the stock nipple for a “Red Hot Nipple” (I think is what it was called) and had even more misfires so went back to the stock nipple.
I noticed the stock nipple hole is off centered. Could this be the cause or any thoughts on why the misfire issues? New Triple 7 and new CCI caps and same issue.

 

[Ed C.]

Start with the obvious. Is the breech and firing channel clean and unobstructed? Replace nipple and try black powder.

 

[snakebit]

Are you getting the ante chamber clean? The offshore riffles have a patent breach. Your jag will only get so far. Get yourself a 30 caliber nylon brush, and use it and patches to get that clean. Not sure if you are swabbing between shots or not, or how bad triple 7 fouls. If you are swabbing, use a damp patch with Windex, or denatured alcohol, damp not wet, and push the jag down slow, and let it sit on the bottom for a few seconds then pull it up. If you push too fast, you're pushing the fouling into the ante chamber, and that will cause blockage. Don't give up, let us know how it goes.

 

[nkbj]

And totally degreased? No oil in the fire path? Totally cleaned of fouling in the fire path?

Fouling can be hard to diagnose, identify and remove. It absorbs oil and then fouls the fresh charge. It's terrible!

 

[Grenadier1758]

@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.