Wanted: Directions on How to Measure Air Gap

[MikeD99]

I saw in the FAQs what the air gap for S&W guns should be. What I would like to know is how to measure it. For instance, what tool would I use? Would a metal automotive points gauge work? Is there something I can buy at Brownell's or McMaster-Carr?

The gun in question is a NAA Black Widow with two cylinders, a .22LR and a .22 magnum. But I think it would apply to any revolver.

BTW, what I am referring to as "air gap" is the distance between the front of the cylinder face (where the bullet would be) and the biginning of the barrel.

Thanks,
Mike D.

 

[Gun 4 Fun]

If you are referring to the BC gap, just use regular automotive feeler gauges. They work perfectly if they are of the blade type.

 

[MikeD99]

Thanks. Now all I have to do is find my feeler gauges. I haven't used them since some time in the '70s!

Good old 1973 VW Superbeetle. I put many happy miles on that thing.

Mike D.