Trim to length

[savageshooter86]

How important is to have each case the exact same length? This is for LR shooting

Say if one sized case is 2.010 and one is 2.013 and another 2.008"?

 

[dogdude]

I always heard to keep length's within .003.'' some say to cut all to the shortest case, so they will be all the same length, sounds good , but might end up with a ''carbon ring'' if you go to far. dogdude

 

[stool]

yep..
do not do what "THEY" or "THE BOOK" says....do what YOUR CHAMBER tells you.
your brass will like you in the end.

i like .001

Uneven growth is my peeve....
If they grow straight, then 3 or 4-thou doesn't bother me. But if they grow uneven, is what I see has hindering effects.

I recommend you do a chamber cast of that new barrel/chamber, then you will know for sure what things are at and can set base-lines for brass prep to compliment your own unique chamber (trimming, turning, sizing, etc.).

Donovan

 

[jonbearman]

I believe sinclair makes a tool for measuring the depth of cut your neck actually is this side of doing a chamber casting which is easy enough to do.I would measure your necks and see if you only have a few that are short,then trim .005 under sammi max neck length at most.After firing you should remeasure to see if they grew alot.If they did then trim a little shorter to give you a few firings or so to have to cut them down again. The hotter the loads the more the case seems to grow in my observations.Fireform them after trimming to make sure there isn't a vast difference after this procedure.I guess I jumped ahead of myself but you get the picture.The less they are trimmed short in your chamber the better.Like the other poster said it will keep the carbon ring from occurring so fast.

 

[6BRinNZ]

I keep them all the same length (+- .0005") because I can, it is simple and it is a variable that is easily managed.

I haven't bothered to see if it makes a difference on paper - simply because there are so many aspects of reloading that fall into this category that I could spend more time testing than I do competing.

 

[jcampbellsmith]

I am quite happy to have case lengths that are +-0.004 inches. I prefer not to trim. Regards JCS

 

[tenring]

Uneven trimming may lead to a variance in bearing length. I think keeping them about .005" short is OK, as long as all are within a couple thous of each other.

 

[savageshooter86]

Sized brass trimmed to 2.005, and I checked several fired cases and they were 2.002-3