Fired (modified) case???

[Richard Coody]

I do know that on any of my fired brass, not one is big enough in the neck to slide a bullet in and out without being reamed or modified in some way.
On the one previous Modified case that I got back, the neck was too tight for a bullet to slide so I tried working it in the reloading press. Turned it into junk real fast.

i don't think that is a good thing. you probably should be neck turning your brass. Do you anneal?

i believe about .003 is a minimum neck clearance over a loaded round. that should allow a bullet to easily slide into a fired case.

 

[wedgy]

I bought a small round file at the hardware store and filed the inside of the neck all the way around to fit the bullet. If you have a lathe, you can turn the inside of neck to be able to slide the bullet in.

You can also put the case in the shell holder that you use to turn the necks but stick a file on the inside to turn it, put the file in a vice or something to hold it steady.

 

[Jet]

If you have a collet bullet puller, put the fattest bullet you have in the caliber of the modified case in the appropriate collet, screw it into your press then run the modified case up and down a number of times. This will expand the neck out to where it needs to be.

Good Shooting

Rich

 

[Milo 2.0]

This guy will make any case for you and ship the next day, quit fighting it.
http://coppercreekammo.com/product/copper-creek-modified-case/

 

[savagedasher]

Not knocking the company's that make modified cases but $11.00 and shipping both ways of $ 6.00 each way . You can buy a drill and tap and you can have a hundred .
All you need is a case fired in your chamber . Larry

 

['Freak]

Or, switch to Sinclair’s Bullet Seating Depth Tool #749-004-650, no ‘modified case’ involved.

 

[hogpatrol]

Or just do this:

 

[savagedasher]

I used my modified case for checking head space changes with fired brass . Bullet seating depth is what I use. To lower
ES .larry

 

[Richard Coody]

Or just do this:

most of the time all that technique will find is the start of the freebore. sometimes the throat. doubtful if you would ever actually reach the lands

 

[fguffey]

When you fire a round, pull the case out of the chamber, put a bullet in the neck, do you have any neck tension??? (will a bullet slide in and out with no resistance??)

Years ago I suggested the shooter place the bullet on the second round be placed into the neck of the first case fired. The step sequence overloaded most shooters/reloaders, as a results they became confused and they have stayed that way. If the bullet was released and the neck expanded when fired the shooter passed up a good opportunity to determine or verify. And then: There is always an 'and then moment', the next opportunity to determine if the neck in the chamber is too tight comes when sizing the case with a full length sizing g die; the expander plug should pass through the neck of the case without touching the case neck when the ram is raised.

F. Guffey

 

[hogpatrol]

 

[Richard Coody]

Years ago I suggested the shooter place the bullet on the second round be placed into the neck of the first case fired. The step sequence overloaded most shooters/reloaders, as a results they became confused and they have stayed that way. If the bullet was released and the neck expanded when fired the shooter passed up a good opportunity to determine or verify. And then: There is always an 'and then moment', the next opportunity to determine if the neck in the chamber is too tight comes when sizing the case with a full length sizing g die; the expander plug should pass through the neck of the case without touching the case neck when the ram is raised.

F. Guffey

i believe the way you describe things could confuse anyone. what you mean in plain english is to see if you have a tight necked chamber after firing your first shot take that fired case and a loaded round and see if the bullet in the loaded round will slide into the fired case with clearance.

yes the expander ball should go through the case neck without contact until the neck is resized and the expander ball is on the way out.

 

[gotcha]

i don't think that is a good thing. you probably should be neck turning your brass. Do you anneal?

i believe about .003 is a minimum neck clearance over a loaded round. that should allow a bullet to easily slide into a fired case.

I agree with the above^^^^^^^ When all is said and done there's a lot to be said for the old fashioned Split necked case method of determining seating depth. ............ My 1st experience with the LNL was just like yours a 6BR .271" neck. I set aside the LNL turned my necks ( .003" clearance) and reverted back to the Split case. Cheap, easy to use, less than 5 min. to make, effective. Just my .02

 

[fguffey]

most of the time all that technique will find is the start of the freebore. sometimes the throat. doubtful if you would ever actually reach the lands

Start of the free bore? I want to know the length of the free bore in thousandths.

F. Guffey

 

[Milo 2.0]

Not knocking the company's that make modified cases but $11.00 and shipping both ways of $ 6.00 each way . You can buy a drill and tap and you can have a hundred .
All you need is a case fired in your chamber . Larry

Convenience has a price, most guys that would complain about this cost will stop at a quickie mart and shell out 4.00 for a lunchable and 2.30 for bottled water, all relative.

 

[Someoldguy]

When you fire a round, pull the case out of the chamber, put a bullet in the neck, do you have any neck tension??? (will a bullet slide in and out with no resistance??)
The reason I ask is: sent a case to Hornady to be modified, got it back. The case head was threaded BUT, the neck will not accept a bullet to slide in and out "like it should so the tool can be used".
Caliber makes no difference. Either the bullet slides in and out or it doesn't.

I have a BUNCH of modified cases from Hornady and on every one of them, the neck has been reamed so a bullet will slide in and out so you can use the gauge to check measurements/distance to the lands.

IF I follow this and the rest of your posts correctly, I suggest that either you or your gunsmith make a chamber cast so it can be determined if you have a tight necked chamber or something unusual going on with your brass. Insufficient neck clearance can produce excessive pressures, so the exact dimensions need to be determined.
Otherwise, it can not be determined what is cause and what is effect.

 

[savagedasher]

If you have a tight neck situation wouldn't you turn the od on the neck of the case before you Fire forum a case ? Larry

 

[Raythemanroe]

Removing the fire control and ejector method is far superior to this... A good start with the modified case is not to use it.. Take ten measurements with a Stoney Point/Hornady tool and see if you get two the same.. Then take ten measurements with out the fire control and ejector method.. Should be easy decision after that..


Ray

 

[hogpatrol]

One thing to remember with any of these method is to make sure the chamber is squeaky clean. A carbon ring can skew the measurement.

 

[Someoldguy]

If you have a tight neck situation wouldn't you turn the od on the neck of the case before you Fire forum a case ? Larry

IF it is a tight neck. Which is why I suggest making a chamber cast before doing anything else.