What tool do I need?

[Torchy]

Hey guys,

I have new virgin prepped brass ready to load up. I then shoot it and it is now fired formed to my chamber (bolt gun). I want to measure the stretch.

What do I need?

Isn't this a tool that clamps onto my caliper? And doesn't it indicate off the shoulder?

Thank you!

 

[maggitas]

This is what i use. I have tried the L.E. Wilson Case gauges with case gauge micrometer, Hornady headspace gauge and a few others. The Whidden headspace gauge is the simplist and most effective I have found.

Whidden Case Gauge

 

[Steel head]

Hornandy and Sinclair make the caliper adaptors to check that.

 

[MarinePMI]

Hornady case and cartridge length comparators are what you're talking about.

Hornady B234 Lock-N-Load Comparator Body with Set of 6 Inserts - - Amazon.com

Hornady B234 Lock-N-Load Comparator Body with Set of 6 Inserts - - Amazon.com

www.amazon.com

Amazon.com : Hornady HK66 Lock-N-Load Headspace Gauge Kit with Body : Gunsmithing Tools And Accessories : Sports & Outdoors

Amazon.com : Hornady HK66 Lock-N-Load Headspace Gauge Kit with Body : Gunsmithing Tools And Accessories : Sports & Outdoors

www.amazon.com

You just need the Headspace one for what you're talking about...

 

[2aBaC̶a̶]

Tool(s), can never have enough tools.

Comparator
Overall length guage
Headspace guage
Case guage
Ammo checker

Hornady, whidden, sinclair, LE Wilson, RCBS, lyman to name a few.

 

[918v]

A semi auto pistol case inverted over the neck

 

[Torchy]

A semi auto pistol case inverted over the neck

Ahhhh I see what ya saying. It’s arbitrary as long as it’s consistent huh?

 

[918v]

Right. I use .32 cal cases for 223 and .40 cal cases for large brass.