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Hornaday modified case problem

I ordered a Hornday modified 6BR case for the Stoney Pint, now Hornaday. I have used to Stoney point for years and I can measure how far to seat a bullet to touch the lands w/o too much trouble.
No luck with the 6BR. The modified case will not chamber in the rifle.
The modified case is Lapua, the same as I use. I have a no turn neck.

The modified case measures .278, OD. Bullets fall out of the case with no resistance.
Sized case measures .268 OD.

I have a bushing die.
Question: Any thoughts as to what I can do?
If I neck siz the modified, then the bullet will not move in the modified case, too much neck tension.
My other modied cases chamber just fine.
Thoughts?
 
If you run it through your fl die you'll need to expand it again to be loose on the bullet. I have done it but not highly recommended.
It's not uncommon to have a bad fitting case when you get into chambers that are generally cut to tighter tolerances.
What you really need to do is remove some extra material from the neck. I just chuck them lightly into a drill press and use a small flat object with sandpaper on it to sand them down. If you have a neck turner you could use that even with the sloppy fit.

Both these methods sound like butchery and they are. Remember that modified case does not need to look pretty all it needs to do is fit loosely in the gun with a loose fit on the bullet. In my experience the loosest fit gives the most repeatable readings. Tight causes problems.
 
Thanks, I was afraid of the resize and reduce the OD and increase the ID or get a bigger bushing were my choices. I'll call Hornaday on Tuesday.
Perhaps this case is not right. None of my other modified cases have had this problem.
 
Your 6br is probably built to tighter specs than your other guns.
If you measure the ID you'll know how much room you have to play with.
 
amlevin said:
Size the case using a F/L bushing die and just leave the bushing out.

Or use a body die.

Chances are high it's the neck creating trouble. .278" OD sounds overly large for a 6mm but my 6BR case is not only AWOL but it has been modified already.
If the OP has a fired case he can extrapolate his neck dimensions from that.
 
I would turn the neck . If that don't work I would take a fired case from the gun you are shooting and have it taped. The later is the best that case will fit your chamber correct. Larry
 
If your case is already expanded enough to have the bullet slide in and out, send me your case with the neck OD of your chamber, and I will turn it for you so that you have .0015" clearence. this should slide in and out just fine.
 
chomondely3 said:
I ordered a Hornday modified 6BR case for the Stoney Point, now Hornaday. I have used to Stoney point for years and I can measure how far to seat a bullet to touch the lands w/o too much trouble.
No luck with the 6BR. The modified case will not chamber in the rifle.
The modified case is Lapua, the same as I use. I have a no turn neck.

The modified case measures .278, OD. Bullets fall out of the case with no resistance. Sized case measures .268 OD. I have a bushing die.

Question: Any thoughts as to what I can do?

Discuss the problem with the lead Tech at Hornady 800-338-3220. Lets us know what the manufacturer's fix is.
 
If push comes to shove you can always use the split neck technique 'til such time as you resolve current issue................ After waiting for months for my back ordered 6 BR modified case I had the same problem as you. I promptly pitched the Hornady case in the trash and used the split necked Lapua case. Great measurements with or without the OAL gauge.
 
Spin it against some 200-400 grit sandpaper until it fits. I had the same problem with mine and I have a .272 neck. If you don't like the crude look, get some finer grit paper and steel wool and it will look bright, smooth and shiny.
 
Otter said:
Spin it against some 200-400 grit sandpaper until it fits. I had the same problem with mine and I have a .272 neck. If you don't like the crude look, get some finer grit paper and steel wool and it will look bright, smooth and shiny.


Works for me ;)
Even if you use a bushing neck sizer it won't be right most likely. Bushings generally do not size right down to the shoulder junction.
You should have seen all the modification it took to make one for my .262" PPC. If I'm not mistaken they offer one now with a turned neck in PPC.
 
Send a fired case to hornady. I think its like $10 plus shipping when I checked last. They'll make you one that's right for your chamber.

My gunsmith makes me a gauge out of the test fire case that fits the Stony/Hornady. Drills the primer pocket and threads it correctly. Works just as well. Village Arms in Gap, PA. If youre close, he could do it.
 
Order your self a 5/16 36 tap and 17 /64 drill remove the primer and make your own. You can take a case that is fired in a gun and you will have a custom case for each gun. Best $20.00 you will ever spend. Larry
 
You could just send me two fired cases from your rifle and I'll make you a couple of modified cases...i do it all the time for myself.
 
savagedasher said:
Order your self a 5/16 36 tap and 17 /64 drill remove the primer and make your own. You can take a case that is fired in a gun and you will have a custom case for each gun. Best $20.00 you will ever spend. Larry


Even quicker and cheaper, drill out a case to slightly larger hole than the threads on the tool. Wax up the tool threads and use some J-B Weld to "make threads. Since all measurements are made from the case itself there's no accuracy issue. All you need is a means to hold the case so it can be inserted and removed from the chamber.

I had to do this as .223 Rem. special cases were unavailable for a long time. Worked great. May never buy another "special case". Love the fact I don't have to wait too.
 
Or drill out the flash hole/primer pocket to a diameter that will accommodate a cleaning rod, After drilling out the flash hole/primer pocket size the case then seat a bullet, short is better. Remove the bolt, drop the test case into the chamber then push the bullet out of the case until it stops.

Remove the case from the chamber and use the test case as a transfer. Transfer the dimensions of the chamber to the seating die. After transferring the dimensions of the chamber to the seating die, ZERO the height of the seating plug stem with a height gage/dial caliper, to seat a bullet .020" off the lands lower the seating stem .020", to avoid starting over every day, save the transfer.

F. Guffey
 

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