Firing Pin Protrusion

[Edd]

Should a 223 Remington have more firing pin protrusion than other common cartridges?

 

[swd]

No. Standard protrusion is .050”-.060” on a bolt gun for all cartridges.

 

[shortgrass]

I was taught: .05-.055" for srp, .059-.062" for lrp, and quality made shotguns the same as lrp

 

[DaveTooley]

no
More will not hurt anything. To little and there could be a problem.

 

[Edd]

If you guys had one that protruded .065", would you trim .010" off of it or leave it alone?

 

[Alex Wheeler]

You can do the math to decide how much you need. Do a primer indention test add a few thou more for head space and another .010" for good measure. Use a hard cup primer to do the test. In most cases .045" is enough, really small firing pins or very strong ignitions may need a little more. You want the firing pin to stop on the primer not the inside of the bolt. Too much robs actual firing pin fall.