new brass specs

berrnard

berrnard

Member
picked up some 6.5 creed nosler premium brass on black friday. got it in and did some measurements.

on avg the OAL was 1.908 but fluctuated 1.907 to 1.909. Hornady book states that max trim length is 1.910
weight majority was 160.8 grn. but fluctuated 160.3 to 161.2
does this seem ok?
 
I don't care who the manufacturer is, I always check every piece of brass for OAL, expand the neck, and run it through a resizing die. Dented necks seem to be a normal occurrence anymore. As for weight variance, there's not much you can do about that except throw out anything that is WAY out of spec. I usually don't trim until after the first firing unless it is too long to begin with.

And FWIW, I use primarily Lapua and Nosler brass and they get the same treatment. Too anal? Maybe. But my reloading is about precision ... not time spent.
 
berrnard said:
picked up some 6.5 creed nosler premium brass on black friday. got it in and did some measurements.

on avg the OAL was 1.908 but fluctuated 1.907 to 1.909. Hornady book states that max trim length is 1.910
weight majority was 160.8 grn. but fluctuated 160.3 to 161.2
does this seem ok?
Click to expand...
OK Hell, I'd say it's pretty damn good, you'll never shoot that difference......
 
SAAMI chamber is 1.925( minimum ), + 0.015. Tolerance
Brass 1.920(- ) 0.020. So your brass basically in the middle
Most factory chambers are LONGER than suggested trim length. Only by actually measuring will you know what your rifles chamber dimensions are. The big disagreements, does brass length/chamber length matter as far as carbon ring development. Some believe brass close to actual chamber length reduces carbon ring development. If you are a clean after all shooting sessions and you clean the chamber area correctly, you probably will ever experience a pressure/fitment issue due to carbon buildup. If you don't/seldom clean than a tight chamber/brass length fit may become an issue. I tend to run my brass in the middle of suggested max brass length and actual chamber length. So example 1.920-0.010= 1.910, actual chamber length 1.932 I likely wouldn't worry until I saw brass over 1.925, unless I was running a crimp, in which case brass should be the same length. As far as variations in length, those will probably change quite a bit after the first firing.
 
berrnard said:
picked up some 6.5 creed nosler premium brass on black friday. got it in and did some measurements.

on avg the OAL was 1.908 but fluctuated 1.907 to 1.909. Hornady book states that max trim length is 1.910
weight majority was 160.8 grn. but fluctuated 160.3 to 161.2
does this seem ok?
Click to expand...
why cant we edit our own post?


weights had a 0 left out. but i guess weight isnt really important
fluctuated 160.03 to 161.20
Click to expand...
 
What reb posted is what it looks like on a phone. On a PC it looks like this:

1701303599948.png


I removed the time limit for users to be able to edit their own posts
 
I did a quick look up and found 1.920 max, with a trim to length of 1.910

The premium Nosler brass should be ready to load. It comes in a box to protect the case mouths. Should be chamfered.

The stuff that comes in a bag is a different story.

I have yet to weight cases

I do like to find range pick up from different manufactures, and test case fill. Its an eye opener. The reason load data is all over the place.

Don't sweat differing charge weights in manuals. Go by velocity. If you are at book, or higher, thats a good safe stopping point.
 


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