Weight Sorting Brass???

[dlebeck]

Is there any real world advantage to weight sorting brass for a factory chambered hunting rifle,7/08)??

What is the SOP for weight sorting? I have been using my digital scale and find that almost all brass is at least a 1/10 or more off.

Can't the weight be more of a matter of carbon deposits, brass not exactly the same length, primer pockets not exactly the same and so on??? I do trim when needed and primer pockets have been squared, but I still get some weight differences from brass to brass.

Thanks

 

[TerryPohl]

You are wasting your time weighting your brass. You will not know where the differance is in the brass.

 

[treeman]

dlebeck, i agree with terry to a point. weight sorting will help on es and sd. but if you uniform all the casses first then sort by internal capacity you'll get better results.______treeman

 

[dlebeck]

internal capacity?????????? F me! How the hell do you do that??

 

[rayjay]

"Factory Chambered Hunting Rifle"

NO

 

[memilanuk]

internal capacity?????????? F me! How the hell do you do that??

Fire the cases so they are in a fire-formed state. Leave the primers in. Take a beaker of water, with a drop or two of liquid dish soap in it, draw a syringe of water from the beaker. Weigh the fired cases w/ primer still in place. Fill to the brim w/ water, and use a Q-tip or the edge of a napkin to get the meniscus dead-level w/ the mouth of the case. Weigh again, record the weight, and subtract the difference. Now you have what is commonly referred to,in this industry) as the 'water volume' or 'wet capacity' in grains.

You don't want to do this on virgin un-fire-formed cases,volume is all over the place from the factory), and the dish soap helps cut the surface tension of the water - less likely to let bubbles collect on the interior surface of the case shoulder as you fill, and lets you achieve a flatter meniscus - basically the water can't bead up as much.

Theoretically, it should be a more accurate indication of case capacity for sorting purposes. In reality... its a monumental pain in the hiney; messy and time consuming to the point of making one want to go fall on their cleaning rod. Maybe okay for someone looking for 20-50 *perfect* cases for a long range BR event, but probably not for the rest of the world.

Back to the original question for the original poster: No, not unless your gun is unusually accurate and you are trying to shoot say, 1000yds with it. Then... maybe, but I think I'd save the bother for a better barrel.

YMMV,

Monte

 

[mikecr]

Your reloading books probably go over it, and most people don't do it,myself included -with some guns).

But weighing brass itself is about as useless as weighing primers..

 

[dlebeck]

I have noticed that Remington Winchester and the like are all over the place when weighing the brass. Lapua, Nosler Custom on the other hand are much more uniform in weight with un-fired new cases. I can't say that I have noticed much improvement in group size from weighing cases, but those much more advanced then me say otherwise. What I have noticed is a smaller ES with the sorted and preped cases. Just trying to make it all work to the of my ability.

Doug