Redding competition shell holder

[Jta]

What am I doing wrong?
Chamber in 6.5x55 ackley
Using hornady headspace comparator.
Following reddings instructions started with .010 then working down. Nothing changes.
1.7855 fired brass
.010-1.7875
.008-1.7880
.006-1.7875
.004-1.7875
.002-1.7875
Redding #7-1.7875
What's going on?
Should also note lapua brass, and rcbs 6.5mmx55 ack imp 40d fl set

[bazineta]

Do I read correctly that your sizing die bumps the shoulder...forward?

[Jta]

Yep my brass gets longer not sure what's happing. Followed instructions insert shell holder raise ram screw fl die in till it hits ram then screw in extra 1/4 turn.

[triplecelectric]

Is the brass fired or new? If the brass is new the shoulder is set back to fit in any chamber. Also make sure the inside of the neck is lubed as the neck sizer could pull lengthening the shoulder.


Sent from my iPhone using Tapatalk

[Jta]

Brass was new then fire formed in gun. With or with out the expanded ball there is no diffeenec

[triplecelectric]

Redding competition shell holder

Measuring with a Hornady shoulder gage?
Never mind you said you were. Is the gage your using sitting about half way down the shoulder?

Sent from my iPhone using Tapatalk

[J-cat]

Do they chamber?

[Jta]

Yes they chamber hard.
Yeah the gauge is sitting right and I'm using the right one For 6.5x55 ackley

[J-cat]

Die defective or chamber too tight

[Jta]

If I get a go no go gauge will that tell me if the chamber is to tight?

[ar15barrels]

What am I doing wrong?
Chamber in 6.5x55 ackley
Using hornady headspace comparator.
Following reddings instructions started with .010 then working down. Nothing changes.
1.7855 fired brass
.010-1.7875
.008-1.7880
.006-1.7875
.004-1.7875
.002-1.7875
Redding #7-1.7875
What's going on?
Should also note lapua brass, and rcbs 6.5mmx55 ack imp 40d fl set

The Redding comp shell holder do not allow full sizing of a case.
Start with a standard shelllholder.
Switching to comp shell holders allow you to size LESS than a standard shell holder.
Since your shoulder is moving forward, this means that you are not sizing enough.
In rare cases, a die will not actually size a case enough and the die needs to have a little material removed from the bottom of the die.

[pacrat]

The Redding comp shell holder do not allow full sizing of a case.
Start with a standard shelllholder.
Switching to comp shell holders allow you to size LESS than a standard shell holder.
Since your shoulder is moving forward, this means that you are not sizing enough.
In rare cases, a die will not actually size a case enough and the die needs to have a little material removed from the bottom of the die.

^^^WHAT HE SAID^^^

Add to underlined "or off top of shell holder".

JM2c

[ar15barrels]

Add to underlined "or off top of shell holder".

Doing that eliminates the ability of using the Redding comp shellholders as the die would STILL be too long in this case.
The best solution is always to fix the actual problem, not to screw something else up that offsets the problem.

[pacrat]

Doing that eliminates the ability of using the Redding comp shellholders as the die would STILL be too long in this case.
The best solution is always to fix the actual problem, not to screw something else up that offsets the problem.

Doing so would not necessarily preclude using the "comp shell holders". But allow you to adjust the comp shell holder that is "closest to matching" the chamber using a given die. To "more closely match" the chamber with that given die.

As to the underlined, I agree totally. But to "properly" fix by shortening, a die that is too deep requires a lathe. Or experience with meticulous use of files,stones, and a machinist square. I've found that "most" reloaders have neither.

Whereas shortening a SH requires only a sheet of 220 wet dry paper and a squirt of oil.

[ar15barrels]

But to "properly" fix by shortening, a die that is too deep requires a lathe. Or experience with meticulous use of files,stones, and a machinist square. I've found that "most" reloaders have neither.

Whereas shortening a SH requires only a sheet of 220 wet dry paper and a squirt of oil.

Equally good or bad results can be obtained on either the die or the sell holder with your sandpaper and oil method.
Those good at lapping would argue that the shell holder is actually going to end up more crooked than a die would because the shell holder is not symmetrical.
The relieved side of the shell holder is going to lap more than the solid side, leaving the shell holder less than parallel than a die when done.