Can someone tell me what this tool is called?

[ARshuter]

This is from the article in Varmint hunter magazine about case improvement.........

Sinclair International sells special
mild-steel inserts to place into mouth of
a case prepared with a very short neck.
You then fully chamber this dummy,
which forces case-neck-diameter plug
into case. You then measure length of
this dummy.

 

[johnu]

Chamber length gauge?

John

 

[CatShooter]

Chamber length gauge?

John

Yes... and they work great!

 

[CatShooter]

This is the gauge...

http://www.sinclairintl.com/reloading-equipment/measuring-tools/case-gauges-headspace-tools/sinclair-chamber-length-gage-prod32925.aspx

 

[fdshuster]

ARshuter: The gauge that catshooter posted is the gauge you seem to be talking about. It measures the correct, exact length of your chamber, from the case head to where the front of the cartridge case mouth would be. Example: The normal case length of the 222 Remington is 1.700", and this gauge will give you that length as it relates to your chamber, as another example could be 1.725". That means you would have a "gap" of .025" in front of your chambered case if you trimmed the case lengths to 1.700".

They work fine, I use them for all my chambers.

ps: Looking at my Winter 2014 issue of Varmint Hunter magazine now, page 109, with the 2 pictures at the top right of the page. Yes that's the gauge he (M.L.McPherson) is talking about.

 

[ARshuter]

Heck I have no idea what it looks like or does. You could tell me its a left handed skyhook.

 

[stool]

not CHAMBER length, but NECK LENGTH.
to determine trim to length for YOUR RIFLE.
the material is leaded steel

This is from the article in Varmint hunter magazine about case improvement.........

Sinclair International sells special
mild-steel inserts to place into mouth of
a case prepared with a very short neck.
You then fully chamber this dummy,
which forces case-neck-diameter plug
into case. You then measure length of
this dummy.

 

[bdale]

Called chamber length Gage measures from bolt face to end of chamber front of chambered case so you know how much room you have past case mouth

 

[CatShooter]

Called chamber length Gage measures from bolt face to end of chamber front of chambered case so you know how much room you have past case mouth

Yup... you are right and dmoran is dead wrong. It is not a "neck length gauge". IT says so on the Sinclair page description.

 

[PDS]

The chamber length gauges do contain lead.
http://www.azom.com/article.aspx?ArticleID=6604

 

[4xforfun]

Be sure to check the diameter of the gauge if you have a tight neck chamber. If you have a tight neck chamber you can order them turned to fit. The good part about that is that you can use the tool that was turned down for a tight neck in a standard SAMI speck chamber. I have them in several calibers for tight neck and use them all the time in standard chambers. I don't even pay attention to the recommended trim length....I measure every chamber I load for and wright the chamber length on the top of my notebook.....first thing I do!!!

 

[jonbearman]

.15 = 15 one hundreths of a percent,just wash you hands.

 

[ARshuter]

Thanks for all the responses and replies. A special thanks to BDale for the PM explaining how the tools work. One thing special about the people on this forum every time I ask for help the members go above and beyond. Again Thanks for the help.

 

[TimP]

4xforfun, "Be sure to check the diameter of the gauge if you have a tight neck chamber. If you have a tight neck chamber you can order them turned to fit."

Sinclair's will do that for you?

 

[stool]

i do not think so..they do offer a 6ppc special for tight necks.....
inspite all the different names it is being called it is all about trim to length...how long can the neck get in your rifle.
your dies control shoulder length, this is for neck length so there is no bullet binding when firing.

 

[4xforfun]

4xforfun, "Be sure to check the diameter of the gauge if you have a tight neck chamber. If you have a tight neck chamber you can order them turned to fit."

Sinclair's will do that for you?

That is where I got mine..but that was before Brownells got involved. My 300 wbys used to be chamberd by Clay Spencer using his .330 neck reamer. I can use the same tool in a factory chamber as well.

 

[BoydAllen]

Just remember ( for the I don't read directions crowd) that you need to shorten the neck enough so that the gauge will not be jammed into the end of the chamber by the end of the neck. I have a rifle that has a barrel that shows evidence of this happening. It raised a thin ridge at the back of the freebore, that I had cut flush with a throating reamer. I think that this tool is based on the assumption that a close fit between the end of the case and the end of the chamber is somehow desirable, I disagree that keeping this dimension small is at all significant, have gotten along without this sort of tool for several decades, and would never close one of my bolts on one. If I were to use one, it would be made of something softer, perhaps brass.

 

[Preacher]

That plug from Sinclair is made from a sintered lead, and no way will it ever harm your bore...
The only other easy way to check that length is to use a borescope.
You need to keep a close eye on the length of the case, so you don't get a carbon build up in that area..
It will raise havoc on accuracy....

 

[BoydAllen]

Leaded steel is not sintered lead. It is steel. http://en.wikipedia.org/wiki/Free_machining_steel

 

[Concha]

A Little late perhaps...
http://www.youtube.com/watch?v=JKnXJxaAw2U