Intermittent misfire questions

[Pre-1898]

Can anyone tel me what can cause a rimfire rifle to be intermittent. It will fire 4-5 rounds out of 10, the rest are misfire .

It cycle , load and eject properly but is not consistent when its time to shoot.

 

[Jay]

Make & model would be helpful...

But my knee jerk guess is the firing pin may be peened from being repeatedly dry fired?

Cheers
Jay

 

[Blastattack]

Weak/damaged/broken hammer/striker springs. Excessively dirty if it’s a semi. Damaged/broken firing pin. There are lots of reasons that a .22 might be unhappy.

 

[Pre-1898]

It is a Norinco JW21 Lever action. Since its a Winchester 9422 clone, i wonder if swapping the firing pin for a Winchester one ( if it fits) would solve the problem ?

 

[highlander]

Try a different type of ammunition; some have harder or thicker brass then others and also the thickness of the rim itself..

I found Winchester ammo bad for that.

 

[kamlooky]

Make & model would be helpful...

But my knee jerk guess is the firing pin may be peened from being repeatedly dry fired?

Cheers
Jay

Yup, pull the firing pin and sharpen the end if this is the inherent problem.

 

[guntech]

It can be a combination of things... blunt firing pin tip, weak spring, excessive headspace, poor ammo.