I'm almost a the stage of having to bump the shoulder on a batch of cases. In a batch of 100 cases and I can still close the bolt on most but there are about a half a dozen that I've pulled out because they are too tight. Should I keep these to the side and bump them all after the this firing or should I just go ahead and do the whole batch now? Thanks
Hold off bumping shoulder as long as possible?
- Thread starter thefitter
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Re: Hold off bumping shoulder as long as possible?
How many times have you trimmed them? Question two..how are the primer pockets?
How many times have you trimmed them? Question two..how are the primer pockets?
Re: Hold off bumping shoulder as long as possible?
I would bump the shoulders at the same time to keep everything
consitant. Out of curiousity the cases that are hard to close the
bolt on? Did you index the case say turn from 6 o clock to 12 o clock
and see if bolt is still sticky?
I would bump the shoulders at the same time to keep everything
consitant. Out of curiousity the cases that are hard to close the
bolt on? Did you index the case say turn from 6 o clock to 12 o clock
and see if bolt is still sticky?
Re: Hold off bumping shoulder as long as possible?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Boogyman</div><div class="ubbcode-body">How many times have you trimmed them? Question two..how are the primer pockets? </div></div>
I trimmed everything before firing this weekend. Probably 3 times total.
Primer pockets are no longer like a newlywed but still like before the first baby is born.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Boogyman</div><div class="ubbcode-body">How many times have you trimmed them? Question two..how are the primer pockets? </div></div>
I trimmed everything before firing this weekend. Probably 3 times total.
Primer pockets are no longer like a newlywed but still like before the first baby is born.
Re: Hold off bumping shoulder as long as possible?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndoe</div><div class="ubbcode-body">I would bump the shoulders at the same time to keep everything
consitant. Out of curiousity the cases that are hard to close the
bolt on? Did you index the case say turn from 6 o clock to 12 o clock
and see if bolt is still sticky? </div></div>
No never tried that. In reality there are only 3 really tight ones in this batch, I just checked them all.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndoe</div><div class="ubbcode-body">I would bump the shoulders at the same time to keep everything
consitant. Out of curiousity the cases that are hard to close the
bolt on? Did you index the case say turn from 6 o clock to 12 o clock
and see if bolt is still sticky? </div></div>
No never tried that. In reality there are only 3 really tight ones in this batch, I just checked them all.
Re: Hold off bumping shoulder as long as possible?
Bump the shoulders, all at the same time as JohnD suggested.
Bump the shoulders, all at the same time as JohnD suggested.
Re: Hold off bumping shoulder as long as possible?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Boogyman</div><div class="ubbcode-body">Bump the shoulders, all at the same time as JohnD suggested. </div></div>
Ok I'll just keep these to the side and then after this weekends firing I will bump the whole batch back. As long as I can close the bolt I'm good to go for one more firing. I'm still working on load development and I don't want to change anything I don't have to.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Boogyman</div><div class="ubbcode-body">Bump the shoulders, all at the same time as JohnD suggested. </div></div>
Ok I'll just keep these to the side and then after this weekends firing I will bump the whole batch back. As long as I can close the bolt I'm good to go for one more firing. I'm still working on load development and I don't want to change anything I don't have to.
Re: Hold off bumping shoulder as long as possible?
Get a FL sizing die and be done with it. Quit worrying about "working your brass too much". Bunch o' crap.
<span style="font-weight: bold">You'll</span> be able to <span style="font-style: italic">feel</span> the difference, but the target won't. Your lil groups will be just as small.
Get a FL sizing die and be done with it. Quit worrying about "working your brass too much". Bunch o' crap.
<span style="font-weight: bold">You'll</span> be able to <span style="font-style: italic">feel</span> the difference, but the target won't. Your lil groups will be just as small.
Re: Hold off bumping shoulder as long as possible?
Or you could just set your dies up properly.
Have the die raised enough that the shoulders arent getting bumped but the expander ball still runs thru the neck.
Continue sizing this way until your cases become difficult to chamber.
THEN YOU MEASURE head to shoulder datum line. Note that down and set up the die accordingly to bump back 0.001 to 0.002 on your cases.
Its really not that hard. If you do this you still full length size each time and you do minimal resizing which helps maintain brass life.
Or you could just set your dies up properly.
Have the die raised enough that the shoulders arent getting bumped but the expander ball still runs thru the neck.
Continue sizing this way until your cases become difficult to chamber.
THEN YOU MEASURE head to shoulder datum line. Note that down and set up the die accordingly to bump back 0.001 to 0.002 on your cases.
Its really not that hard. If you do this you still full length size each time and you do minimal resizing which helps maintain brass life.
Re: Hold off bumping shoulder as long as possible?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vman</div><div class="ubbcode-body">Or you could just set your dies up properly.
Have the die raised enough that the shoulders arent getting bumped but the expander ball still runs thru the neck.
Continue sizing this way until your cases become difficult to chamber.
THEN YOU MEASURE head to shoulder datum line. Note that down and set up the die accordingly to bump back 0.001 to 0.002 on your cases.
Its really not that hard. If you do this you still full length size each time and you do minimal resizing which helps maintain brass life. </div></div>
This is pretty much what I have been planning. The brass has just started to get snug in the chamber. Only difference is I have a Forster neck/shoulder die that I'm using next. Thanks
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vman</div><div class="ubbcode-body">Or you could just set your dies up properly.
Have the die raised enough that the shoulders arent getting bumped but the expander ball still runs thru the neck.
Continue sizing this way until your cases become difficult to chamber.
THEN YOU MEASURE head to shoulder datum line. Note that down and set up the die accordingly to bump back 0.001 to 0.002 on your cases.
Its really not that hard. If you do this you still full length size each time and you do minimal resizing which helps maintain brass life. </div></div>
This is pretty much what I have been planning. The brass has just started to get snug in the chamber. Only difference is I have a Forster neck/shoulder die that I'm using next. Thanks
Re: Hold off bumping shoulder as long as possible?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">My God you really do have OCD!
Bump everytime, being as consistent as possible is the goal. </div></div>
I'm a lot of things, but not a liar.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">My God you really do have OCD!
Bump everytime, being as consistent as possible is the goal. </div></div>
I'm a lot of things, but not a liar.
Re: Hold off bumping shoulder as long as possible?
Unless you're loading for a benchrest gun with a very tightly controlled chamber, my advice is to full-length resize every time, bumping the shoulder back just slightly.
That's what some guy named David Tubb does, and his loads were good enough for him to win the U.S. National Highpower Championship 11 times. It's his belief that doing that leads to more consistency and hence accuracy. He just might know something.
Unless you're loading for a benchrest gun with a very tightly controlled chamber, my advice is to full-length resize every time, bumping the shoulder back just slightly.
That's what some guy named David Tubb does, and his loads were good enough for him to win the U.S. National Highpower Championship 11 times. It's his belief that doing that leads to more consistency and hence accuracy. He just might know something.
Re: Hold off bumping shoulder as long as possible?
David Tubb ey... never heard of him
LMAO
That was a joke by the way
David Tubb ey... never heard of him
LMAO
That was a joke by the way
Re: Hold off bumping shoulder as long as possible?
Lindy,
You advised the poster to full-length resize everytime and that's something I've always done BUT only recently have I learned that the dies, and in my case I'm using Forster dies, will resize and bump the shoulder to <span style="text-decoration: underline">only</span> SAAMI/factory specs. If someone is shooting a tight chambered rifle, are the dies capable of bumping the shoulder the .001 - .002 back that, from what I've read, is desirable?
This maybe a difficult question to answer since there are variations in all equipment.
Lindy,
You advised the poster to full-length resize everytime and that's something I've always done BUT only recently have I learned that the dies, and in my case I'm using Forster dies, will resize and bump the shoulder to <span style="text-decoration: underline">only</span> SAAMI/factory specs. If someone is shooting a tight chambered rifle, are the dies capable of bumping the shoulder the .001 - .002 back that, from what I've read, is desirable?
This maybe a difficult question to answer since there are variations in all equipment.
Re: Hold off bumping shoulder as long as possible?
Well, I've never seen a die on which the amount of shoulder bump wasn't adjustable, but whether that's true or not, I use this one:
http://www.sinclairintl.com/.aspx/sid=63632/pid=37634/Product/REDDING_COMP_NECK_DIE__308_WIN
Well, I've never seen a die on which the amount of shoulder bump wasn't adjustable, but whether that's true or not, I use this one:
http://www.sinclairintl.com/.aspx/sid=63632/pid=37634/Product/REDDING_COMP_NECK_DIE__308_WIN
Re: Hold off bumping shoulder as long as possible?
Whoa, wait a minute, first you tell the poster to full length resize everytime but then you post a link to a neck resizing die. Believe me, I'm NOT being critical, just trying to understand why you advocate FL resizing and then tell us you use a neck resizing die? I mean, I was sitting here thinking "LINDY FL resizes so it must be a good thing."
Second, I've read the Forster instructions and no where does it say that the amount of shoulder bump can be adjusted. Probably because caution must be employed when doing so since it could alter pressure. So tell me, aside from screwing the die down a little further, how can it be adjusted to bump the shoulder?
Whoa, wait a minute, first you tell the poster to full length resize everytime but then you post a link to a neck resizing die. Believe me, I'm NOT being critical, just trying to understand why you advocate FL resizing and then tell us you use a neck resizing die? I mean, I was sitting here thinking "LINDY FL resizes so it must be a good thing."
Second, I've read the Forster instructions and no where does it say that the amount of shoulder bump can be adjusted. Probably because caution must be employed when doing so since it could alter pressure. So tell me, aside from screwing the die down a little further, how can it be adjusted to bump the shoulder?
Re: Hold off bumping shoulder as long as possible?
Screwing the die in and out is the only way of adjusting the shoulder bump,
(or using competition shellholders, same effect, altering how much case gets pushed into the die)
Screwing the die in and out is the only way of adjusting the shoulder bump,
(or using competition shellholders, same effect, altering how much case gets pushed into the die)
Re: Hold off bumping shoulder as long as possible?
Yeah - I posted the wrong link.
Here's the one I use:
http://www.sinclairintl.com/.aspx/sid=69499/pid=36560/Product/REDDING_TYPE_S_FULL_LENGTH_DIE__308_WI
With that one, you control neck tension by changing bushing size, and you adjust the amount of shoulder bump by changing the length the die is screwed in.
Yeah - I posted the wrong link.
Here's the one I use:
http://www.sinclairintl.com/.aspx/sid=69499/pid=36560/Product/REDDING_TYPE_S_FULL_LENGTH_DIE__308_WI
With that one, you control neck tension by changing bushing size, and you adjust the amount of shoulder bump by changing the length the die is screwed in.
Re: Hold off bumping shoulder as long as possible?
There's often an issue with bumping the shoulder of the case back with FL dies, including the S Type FL die Lindy mentions, when your brass has been fired in a chamber which has been set to minimum (0) headspace. The problem is that generally the die bodies are too long, so you can't screw them down far enough to actually bump the shoulder back. If you get a headspace gauge and measure the case before and after, you'll often find no bump on the shoulder and only the neck and body have been resized. On the other hand, if your brass has been fired in a long chamber with plenty of headspace, you may be able to bump the shoulder back using a standard FL die.
Best way to get more adjustment downwards is have the die body shortened a few thou by someone who knows how to run a lathe well. You can screw it downwards a bit more then.
I use the Redding body dies to bump the shoulders back and size the case body, and then a Lee Collet die to do the necks. Produces some uber-straight brass, often with .001" runout at the neck. Call me anal.
There's often an issue with bumping the shoulder of the case back with FL dies, including the S Type FL die Lindy mentions, when your brass has been fired in a chamber which has been set to minimum (0) headspace. The problem is that generally the die bodies are too long, so you can't screw them down far enough to actually bump the shoulder back. If you get a headspace gauge and measure the case before and after, you'll often find no bump on the shoulder and only the neck and body have been resized. On the other hand, if your brass has been fired in a long chamber with plenty of headspace, you may be able to bump the shoulder back using a standard FL die.
Best way to get more adjustment downwards is have the die body shortened a few thou by someone who knows how to run a lathe well. You can screw it downwards a bit more then.
I use the Redding body dies to bump the shoulders back and size the case body, and then a Lee Collet die to do the necks. Produces some uber-straight brass, often with .001" runout at the neck. Call me anal.
