Step in Vaquero chamber mouths ?

[DutchV]

My .44 Mag Vaquero, built in 2024, has a small step in the mouth of every chamber. Any idea why Ruger would do this? There's got to be a reason, since it's an extra machining step, and that stuff costs money.

 

[NikA]

Looks to me a bit like an overzealous chamfering cut. Hard to tell from a picture.

 

[Yaworski]

That's called a grammene and helps with encabulation at the time of modial interjection.

 

[DutchV]

That's called a grammene and helps with encabulation at the time of modial interjection.

Now I remember why I have you on ignore.

 

[41Dude]

I never noticed it before. I went and looked at my SBH. It has the same chamfering just not as deep. I would assume it was done to smooth out any sharp machining left over from manufacturing.
My SBH is over 40 years old with no issues from chamfering.
You have a winner handgun and caliber.
Shoot and enjoy

 

[DutchV]

I'm curious, since none of my other revolvers have this, whether Ruger or other brands. I've sent a note to Ruger so we'll see what they think.

 

[Yaworski]

Now I remember why I have you on ignore.

Obviously, you're not ignoring me.

 

[Timbo23]

That looks really odd to me. It doesn't look chamfered but counter bored and it's on the FACE of the cylinder not the breach side. There is no reason for a chamfer to be there as it is where the bullet exits the cylinder.
I checked all my Blackhawks and Vaqueros that I have access to and none of any caliber have anything on their cylinder faces like that.

 

[DutchV]

This one is going back to Ruger. It looks like they started to ream the chambers from the wrong end.

 

[mr surveyor]

crowned chambers?

 

[el caminero]

That's called a grammene and helps with encabulation at the time of modial interjection.

Sounds like how roy weatherby's double venturi necking was explained.