neck diameter?

[okie]

What is best way to get an estimate of neck diameter in a chamber besides chamber casting (without removing the barrel)?
Does not have to be exact--maybe +/- a thousandth...this is a short case on short action.
Plug gauges?

 

[AlNyhus]

Plug (pin) gauges work great. A holder handle is nice so you can get a better feel for it. -Al

 

[okie]

Plug (pin) gauges work great. A holder handle is nice so you can get a better feel for it. -Al

thanks...I will try that

 

[Lucky Shooter]

Small thread protectors---roughly 1/4" size at local hdw store make good handles.

A. Weldy

 

[okie]

Small thread protectors---roughly 1/4" size at local hdw store make good handles.

A. Weldy

good idea-thanks

 

[gunsandgunsmithing]

What is best way to get an estimate of neck diameter in a chamber besides chamber casting (without removing the barrel)?
Does not have to be exact--maybe +/- a thousandth...this is a short case on short action.
Plug gauges?

Fired case? Depending on what it's chambered for,(ie 30 BR or 6PPC), you could fire a case with pistol powder and NO bullet method.

 

[Alex Wheeler]

https://www.mscdirect.com/product/details/86425378?fromRR=Y

 

[okie]

Fired case? Depending on what it's chambered for,(ie 30 BR or 6PPC), you could fire a case with pistol powder and NO bullet method.

yeah i have measured a few....i think i got a tight neck reamer, was pretty sure it was supposed to be a no neck turn reamer, not sure if the print that i have is what was used in my chamber, so i wanted to verify the quickest way. thanks!

 

[okie]

https://www.mscdirect.com/product/details/86425378?fromRR=Y

does that expand to fit the hole? then pull it out and measure the ball? thanks!---never seen those...

 

[okie]

https://www.mscdirect.com/product/details/86425378?fromRR=Y

want to rent me "b" and "c" for a few days for a small fee????

 

[AlNyhus]

Yep...those small hole gauge sets work well, too. I've got an inexpensive set of half-ball Shars...they work fine and are repeatable when measured with a quality .0001 micrometer.

Having gauge pins, they're what I grab first. -Al

 

[okie]

Yep...those small hole gauge sets work well, too. I've got an inexpensive set of half-ball Shars...they work fine and are repeatable when measured with a quality .0001 micrometer.

Having gauge pins, they're what I grab first. -Al

will do thanks again

 

[hoz53]

What is best way to get an estimate of neck diameter in a chamber besides chamber casting (without removing the barrel)?
Does not have to be exact--maybe +/- a thousandth...this is a short case on short action.
Plug gauges?

have you fired any rounds in it?
or do you have any fired brass?

 

[okie]

have you fired any rounds in it?
or do you have any fired brass?

yep. measures tight.

 

[DaveTooley]

You can measure the FB of the reamer to within a few tenths. Lightly rotate opposite the way of the cutting edges with calipers. Do it three places. At one of them the flutes will be opposite each other. You're just trying to expand the caliper a thou or so.

 

[okie]

You can measure the FB of the reamer to within a few tenths. Lightly rotate opposite the way of the cutting edges with calipers. Do it three places. At one of them the flutes will be opposite each other. You're just trying to expand the caliper a thou or so.

got it. thanks!

 

[Alex Wheeler]

Daves right, but be very careful caliper jaws or mic anvil faces are harder than a reamer and can easily nick the cutting edge. So far as renting tools, I am using them daily and inevitably every time I lend one out I seem to need it the next day.

 

[okie]

Thanks guys! I dont loan tools either!

 

[DaveTooley]

I actually apply a little opening pressure to reduce the pressure on the cutting edge.

 

[okie]

I actually apply a little opening pressure to reduce the pressure on the cutting edge.

Ok maybe i have the dexterity to get it done...im kinda clumsy, probably drop the reamer and the calipers...better get my glasses...