Want to Borrow 40 S&W finishing reamer

[entropic]

I have 40 or 223 brass to give someone if they would let me borrow their reamer for a week at most. Just need to finish one chamber. Thank you much,

Dave

[Caspian_45]

You will need to have the GO/NO-GO gauges to go with that too. You may have better luck sending it to someone and let them do the chambering.

[entropic]

I've heard about almost every step of building this gun... no point in outsourcing now. Not familiar with go/no-go gauges...can't I just "go" until a piece of 40 brass is flush with the barrel hood?

[mike cyrwus]

I've heard about almost every step of building this gun... no point in outsourcing now. Not familiar with go/no-go gauges...can't I just "go" until a piece of 40 brass is flush with the barrel hood?

No, cause true headspace is measured to the breechface.

You can add it all up if you have feeler gauges and a depth micrometer.

[WhiteDingo]

I've heard about almost every step of building this gun... no point in outsourcing now. Not familiar with go/no-go gauges...can't I just "go" until a piece of 40 brass is flush with the barrel hood?

The tolerances of your average piece of brass aren't going to be even close to what you want to hold to when you're finish reaming your chamber (sure, you might get lucky, but do you really want to risk excessive headspace?). You really would need to borrow the go/no-go guages with the reamer.

Technically speaking with proper headspace, a cartridge should actually sit a small amount below flush with the barrel hood; depending on the length of the hood in regards to the breechface, that is. If the hood is excessively short, then no, it won't sit below flush. But with a hood with the minimal/appropriate gap, then it will most likely sit below flush with the rear of the hood.

[Joe4d]

http://www.4-dproducts.com

They rent reamers, I have used them in the past to throat two Ed brown .40 barrels, If you are only gonna do one barrel once in a blue moon it's the way to go. seems like it is only about 20 bucks plus return shipping. You will probably need a chamber reamer and a throat reamer. They may also have a go gauge.

[entropic]

Thanks for the tips guys. Clearly I still have a lot to learn about building guns. Is there a standard fee for a finishing ream done by a gunsmith? Mine tends to charge 2-3 times what others do since he has more business than he can handle.

[3quartertime]

This seems to have morphed into a gunsmithing type question. Moved to a more appropriate location...

[WhiteDingo]

Thanks for the tips guys. Clearly I still have a lot to learn about building guns. Is there a standard fee for a finishing ream done by a gunsmith? Mine tends to charge 2-3 times what others do since he has more business than he can handle.

Generally there's a range for fees. Some gunsmiths will charge more than others. The charge for just finshing a pistol barrel chamber probably isn't something most smiths will have on hand (usually there's a lot more steps involved, so they'll have a price for a complete barrel job). To install and headspace a short chambered barrel on a rifle runs about $100 (from what I've seen), so probably around there for finishing the chamber/headspacing for the pistol, I would think.

It couldn't hurt to just e-mail a few smiths and get their pricing to get an idea.