Problems bumping shoulders

[Kansas91]

I'm having issues bumping the shoulders on my 6.5x47 lapua. Seems like every time I resize instead of bumping the shoulders back .001-.002 they're growing .001. I'm using a hornady .375 bushing to measure. Thanks!

 

[Ggmac]

Are you also sizing the body ? If not are you using and lube ?

 

[Cool Tool]

What kind of dies are you using is my first question.

 

[Kansas91]

RCBS Gold medal match FL die. Just using a lube pad. This is for my PRS rifle. Fire formed brass measures 1.468 after resizing they are consistent at 1.470 now.

 

[JohnKielly]

Do they chamber easily?

 

[Kansas91]

They're fairly tight but still chamber. This is 3rd reloading on this brass I just got done annealing the brass also. I've had same issue with my whidden dies in 6.5x284.

 

[Cool Tool]

RCBS Gold medal match FL die. Just using a lube pad. This is for my PRS rifle. Fire formed brass measures 1.468 after resizing they are consistent at 1.470 now.

Can you see light between the shell holder an dies on full stroke if you can turn it down little by little then check cases in your chamber if they go easy I would lock that die down due that you have fired those cases at least 3rd firing.

 

[Kansas91]

I used to have it cam over lightly on the die and didn't have much trouble but I got to measuring and came across this problem

 

[yotehater]

Have you adjusted the die down below touching for some cam over on your press? Assuming you are already touching the shell holder.

edit, sorry was typing. See if you can go a little more.

 

[Big Mc]

I'm having issues bumping the shoulders on my 6.5x47 lapua. Seems like every time I resize instead of bumping the shoulders back .001-.002 they're growing .001. I'm using a hornady .375 bushing to measure. Thanks!

If they cha

I'm having issues bumping the shoulders on my 6.5x47 lapua. Seems like every time I resize instead of bumping the shoulders back .001-.002 they're growing .001. I'm using a hornady .375 bushing to measure. Thanks!

If they chamber with no problem, you are good to go. Just my two cents.. Tommy Mc

 

[Ggmac]

Then they are squeezing the body and lengthening the case . Is it a factory chamber ? Anytime you squeeze the body it's gotta go somewhere .
Measure a few case bodies in dif locations before and after sizing .

 

[lpreddick]

I'm having issues bumping the shoulders on my 6.5x47 lapua. Seems like every time I resize instead of bumping the shoulders back .001-.002 they're growing .001. I'm using a hornady .375 bushing to measure. Thanks!

If the bump measurement increases after FL sizing you are not pushing the shoulder back as the brass has to go somewhere when FL sized and it goes forward. Some dies (I learned the hard way) have to screwed WAY down to contact the shoulder and you will experience a "camming over" when finally pushing the shoulder back. If you can remove the firing pin/spring and ejector from your bolt you will really feel the case shoulder touching the end of the chamber. The feel here is so sensitive you call tell difference of .001 easily. Some have ground the shell holder or die a few thousand to avoid the cam over.

 

[BenPerfected]

Hornady Unique Case Lube

This case lube might help solve your sizing issues. Previously a friend suggested I switch from the Hornady 1-Shot lube to the Hornady Unique Case Lub. It comes in a tub and just apply it with two fingers. For me, it was is a quanitmun leap forward in smoothly resizing my brass.
Ben

 

[John Russell]

Problems bumping shoulders

This was beat to death a few days ago...

http://forum.accurateshooter.com/th...ie-bumps-shoulder-in-wrong-direction.3913245/

 

[savagedasher]

Its not un comon for someone to have trouble bumping if the chamber has Been set up with a tight go gauge . Larry

 

[dedogs]

This was beat to death a few days ago...

+1

 

[/VH]

+1

+2

 

[/VH]

Hornady Unique Case Lube

This case lube might help solve your sizing issues. Previously a friend suggested I switch from the Hornady 1-Shot lube to the Hornady Unique Case Lub. It comes in a tub and just apply it with two fingers. For me, it was is a quanitmun leap forward in smoothly resizing my brass.
Ben

Ben,

Which two fingers?

 

[MagnumManiac]

I'm having issues bumping the shoulders on my 6.5x47 lapua. Seems like every time I resize instead of bumping the shoulders back .001-.002 they're growing .001. I'm using a hornady .375 bushing to measure. Thanks!

This is simply the fact that brass must go somewhere when it is moved, in this case, as the body is squeezed, it makes the head to shoulder LONGER, therefore, no bumping is happening.
If you have adjusted the die to touch the shell holder with the ram at the top without a case in the die, then there is room to turn the die down another 1/2 turn. The reason is that the case resists going into the die, the press linkage 'springs' with the resistance and the case stops entering the die. You will also see a gap between the die bottom and shell holder top, this is the 'slop' in the linkage of the press. To get a FL sized case there needs to be NO GAP between the shell holder top and die bottom when a case is installed.
It is not necessary, however, to adjust a die this way every instance, as some dies are too long for the cases that come from a short chamber. It only needs to be adjusted this way if the shoulder isn't getting enough bump.
I measure my fired cases and adjust to get .002" bump, this may require .004" to take up any springback the brass causes to the measurement.
Just keep adjusting until you get the desired amount of bump, regardless of how much 'cam over' is required, or lack thereof in most instances.

Cheers.


PS, yours is the first post I have been able to figure out the quote function!

 

[Kansas91]

Thanks everyone I got it to bumb back just had to really get my press to cam over on the die. Luckily this is the only die set that I have that I have to do this on. Might have to take a few thou off the die for next time. Thanks everyone!