Use brass that is .008 short?

[mattri]

Ran some fired brass through the trimmer today and it came out .008 short. Trimmer has been set up for this round for some time with this never happening before- maybe it got bumped somehow etc. but that is a different thread.

Question is that I now have some cases that are .008 shorter than spec- use them or not?

Brass is always processed the same- shoulder bumped .002, neck sized, trimmed, chamfered, primer pocket cleaned and then tumbled. Weight sorting on initial batches. These were 2x fired cases, bullets used do not have a cannelure and are not crimped.

These are for a hunting rifle that has consistently shot sub MOA to 600 yards which is much farther than it will ever be used at but good practice none the less.

Is a .008 discrepancy enough of a difference to cause an accuracy issue in this application?

 

[ShootDots]

There is no problem using that brass at all.. However, you simply need to go the extra mile to ensure that a carbon ring does not form just in front of the where the case mouth ends and the leade begins..

 

[mattri]

Excellent suggestion, thanks.

 

[lpreddick]

did this once and forgot to keep them seperate from the longer cases. took awhile to figure out why they shot differently. the problem with a carbon ring is important...if you shot a number of the short ones and they deposited a ring (just about guarantee it willl happen) , then chambered a case longer, you could get some crimping of the neck and pressures go up.

 

[searcher]

Shoot them!

 

[22BRGUY]

There is no problem using that brass at all.. However, you simply need to go the extra mile to ensure that a carbon ring does not form just in front of the where the case mouth ends and the leade begins..

+1...Been there done that also...no problem...just watch for the carbon buildup

 

[Joe Maisto]

Excellent suggestion, thanks.

And a good one as well..