Modified Cases

[Mike in Oregon]

How many use modified cases?

 

[RLB]

I do. I drill and tap my own

 

[GLShooter]

I did until I switched to the more versatile Sinclair Distance to Lands tool.

 

[Rick in Oregon]

I do, and if the case is a wildcat, I just drill/tap and make my own from a once-fired case.

 

[Mike in Oregon]

I saw this jig setup. Thoughts?

Modified Case Jig Kit

The patent pending Modified Case Jig provides a quick and easy way to create modified cases fit to your chamber from once fired brass. The only tool needed is a cordless drill. This is an essential reloading tool for reloaders who hand load for multiple cartridges or wildcats.

rytgear.com

 

[Rick in Oregon]

I did until I switched to the more versatile Sinclair Distance to Lands tool.

I looked at the Brownells and Sinclair websites and do not see this tool. Got a link?

 

[chromatica]

I use modified cases as a measurement tool in all my rifle calibers. Hornady doesn't yet make a modified case for 7/6.5 PRCW so I made one from a 6.5 PRC modified case. I opened up the throat with a series of pin gauges.

 

[RLB]

It was awhile back.
I went on drillsandtaps.com
Bought a 5/16”-36HSS taper tap and a 19/64”drill bit for way less than $95.
It looks like a nice kit but …

 

[Rick in Oregon]

I saw this jig setup. Thoughts?

Modified Case Jig Kit

The patent pending Modified Case Jig provides a quick and easy way to create modified cases fit to your chamber from once fired brass. The only tool needed is a cordless drill. This is an essential reloading tool for reloaders who hand load for multiple cartridges or wildcats.

rytgear.com

Mike, it appears this is a new tool. Might be very useful if you need to make up quite a few modified cases for each rifle caliber you have on hand if the case in question is not available.

You'd have to make up a large amount of modified cases to make this one cost effective though.

 

[Tesoro]

I just had a new bbl chambered and my smith made me a chamber duplicate from shoulder forward using my same reamer. works like as charm for precise headspace measurements and for getting the exact distance to lands starting point. Just need to keep seating bullet until you can turn case with minimal friction and get just one scribe line on the bullet. Clean bullet with 3m pad after every try. this gives you the precise distance to lands on new bbl. can log it, save the bullet and then check for throat erosion over time with modified case. I not gonna chase lands anymore and use my tuner when needed.

 

[Mike in Oregon]

Mike, it appears this is a new tool. Might be very useful if you need to make up quite a few modified cases for each rifle caliber you have on hand if the case in question is not available.

You'd have to make up a large amount of modified cases to make this one cost effective though.

I hear you. Hence the post to see what kind of feedback I get. My initial thought was costly too. I'm sure there are other setups out there.

 

[JFrank]

With the PMA touch tool there is no need for modified cases and no guessing on touch point.

Touchpoint Seating Depth Tool - BR/308 Caseheads

The highest quality, most innovative reloading tools and shooting supplies for precision riflemen. Unparalleled customer service. Shop Now - PMA Tool

www.pmatool.com

 

[Tesoro]

For odd ball cases I would loosen up the neck a little on a sized case, add blue glue and insert polished bullet. Chamber it over night. On inspection with a 10x loupe I would measure the length of lands skid marks from the jamb and subtract from cbto measurement to get the measurement to lands.

 

[Mike in Oregon]

For odd ball cases I would loosen up the neck a little on a sized case, add blue glue and insert polished bullet. Chamber it over night. On inspection with a 10x loupe I would measure the length of lands skid marks from the jamb and subtract from coal measurement to get the measurement to lands.

Sounds like the Loc-Tite method I watched on UR the other day.

 

[Tesoro]

Sounds like the Loc-Tite method I watch on UR the other day.

blue glue = loc-tite. Yup

 

[DShortt]

I just bought a tap, already had the drill bit. I make mine in my lathe.

This might be a helpful kit for someone without access to a lathe, depending on exactly what that 3rd piece in the kit is/does.

 

[Mike in Oregon]

blue glue = loc-tite. Yup

Gavin was using red. I'm a little hesitant to go red in my barrel. Idk, just me.

 

[Tesoro]

Gavin was using red. I'm a little hesitant to go read in my barrel. Idk, just me.

blue works fine so why use red. red not permitted around my guns and loading gear!

 

[Mike in Oregon]

blue works fine so why use red. red not permitted around my guns and loading gear!

Exactly.

 

[TheOtherZilla]

Me too. Have a bunch. BUT my stab at making my own ended in failure.