brass weight...what's acceptable

mudbug

mudbug

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I am having some accuracy troubles and several of you have mentioned weighing the brass. What is an acceptable deviation? My 338 fed brass weights change from 176-178 grains. Should I sort them within 1 gr or is a couple grain differance too much? I don't get many in each batch seeing I only have 140 brass for this gun.
Sorry if I missed it in the search funtion and sorry for the newb question.
Also is a 1 or 2 grain deviation a bigger deal on a 223 compared to a larger caliber (I think I can guess what the answer will be:rolleyes:) but I would like to get a few other peoples opinion.
 
I just sorted by weight when I did accuracy check, but I read that a better way is to sort by volume - use the finest powder you have.
I used a ball powder, and over 9 cases the variation was only ±0.3 grains, so it was not the cases.
 
"...2 grain variation is not enough to worry about...deviation a bigger deal on a 223..." Yep and nope. Having the brass all the same weight is important to bench rest shooters, but doesn't make much difference for a hunting rifle.
Having the cases all the same length matters. As does your loading technique. When you're working up loads, forget about volume and speed.
 
Thanks for the info guys. It shoots about the same with factory ammo but at $69 a box of 338 fed with 185 barnes I can't afford not to reload. I will try the case volumn trick just to see if there is a differance there.
thanks guys
 
There is just 5 holes in about 2.5" . No vertical or horizontal stringing. I've had a buddy shoot it as well just to see if it was me and he had the same results.
 
I've had similar issues with my -06, posed the same question you have... the thread is still in this forum.

2.5" isn't terrible... neither is the 3" best I've had lately. After reading the responses in my thread and yours, I'm guessing it's us not doing our parts....
 
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