Problem with bought "once fired" cases

[loiner1965]

How do I bump the shoulders back?

adjust your die another 1/2 turn and try again etc

[aris]

This video describes it well so you can understand why and how.

https://youtu.be/azv1dxKQNvA

The quick answer is:

adjust your die another 1/2 turn and try again etc

Basically pushing the shoulder into the die a bit further to bring it back.

[CROWMAN]

I'll watch the video and thank you for the clip link.

Basically bumping back means adjusting the die so that it compresses the case more?

Do I have that correct please?

[loiner1965]

I'll watch the video and thank you for the clip link.

Basically bumping back means adjusting the die so that it compresses the case more?

Do I have that correct please?

yep......adjust a little then try to chamber......remember to use lube

[CROWMAN]

Yes, I'll try that asap.

I did follow standard sizing procedure, i.e. running down to case holder and also increased it down by 1/4 thinking that would be more than enough, obviously not.

Never had this problem with once fired cases before, but you live and learn.

Will try locking die adjustment down more and see.

Thanks for help.

[aris]

I'll watch the video and thank you for the clip link.

Basically bumping back means adjusting the die so that it compresses the case more?

Do I have that correct please?

Yes. When resizing, the brass was compressed and pushed the shoulder up. All chambers are slightly different. It helps to have a comparator to measure the headspace, but you could probably bump it by trial an error if you adjust the die in small amounts and test in your chamber.

[amc577]

Some of the best brass to be had... different dies give different results... I fls my 222 cases with Lee die and found that some of the bullets were a little loose in the neck.. switched to my Hornady die, fls and much tighter necks...

amc577

[CROWMAN]

Thanks for all replies.

I have successfully re-sized one of the cases, but only by taking my R.C.B.S. full length sizing die down to about as far as the thread will go.

As I said initially, I have re-sized many once fired cases and perhaps about a half turn decrease was required, what rifle chamber this came out of god only knows!

I thought that it must be something else that was causing the problem.

Hopefully I will be able to re-size successfully the rest of the batch, one thing with buying "once fired" cases etc is that you need to run every sized case through your rifle chamber to make sure all is ok or risk a possible jammed round at the range.

[loiner1965]

Thanks for all replies.

I have successfully re-sized one of the cases, but only by taking my R.C.B.S. full length sizing die down to about as far as the thread will go.

As I said initially, I have re-sized many once fired cases and perhaps about a half turn decrease was required, what rifle chamber this came out of god only knows!

I thought that it must be something else that was causing the problem.

Hopefully I will be able to re-size successfully the rest of the batch, one thing with buying "once fired" cases etc is that you need to run every sized case through your rifle chamber to make sure all is ok or risk a possible jammed round at the range.

yes i would personally check each case to see if it chambers....once done you can resize as normal when fired in your rifle.