How and when to weigh h20 volume capacity?

[gregpo]

I have federal new, once and twice fired brass, LC once fired, and winchester new brass. With once and twice fired commercial brass do i weigh it as is or resize it first and then weigh the brass with water? Or should I just worry about the case capacity with the lc stuff compared with commercial brass? The federal and winchester, remington, and hornady should all be close since its all comercial brass right? or am I assuming to much. Thanks, if theres previous post please send it my way, thanks. Also is it better t ofill with water and dump it on scale or weigh brass and water together.

All brass is trimmed to 2.05. All of my brass is lee collet sized except for lc stuff which is for ar-10.

 

[LR-WSM]

Re: How and when to weigh h20 volume capacity?

Greg, Using water to measure internal case volume of a fired catridge is a real PITA unless your setting up a control baseline for a ballistics program. Best thing to do is to get 50 or 100 pcs of like brass wheather it be LC, Win, Rem, or Lapua and stick with it. Mixed headstamps will have a wider spread of internal volume giving you crappy unpredictable relults at the range. The object is to control as many factors a possible limiting the unknowns.

There are some very good articles on reloading that are pinned at the top of the reloading forum.

Good luck

 

[Victor N TN]

Re: How and when to weigh h20 volume capacity?

You can do it any way you want to. But you have to compare same to same. You can't compare new Federal to fired Winchester or range pickup brass. You can get a lot of useful data doing it every which way. But you have to save the data and keep it labeled properly.

 

[Greg Langelius *]

Re: How and when to weigh h20 volume capacity?

I don't. I did, and then I did some repeated blind testing and found that the results were counterintuitive and non-correlated with what I was doing. I also had others do the preparations, to rule out personal error. I have some confidence that <span style="font-style: italic">for me</span> it's not a requisite.

Personally, I think that handloading is crucial to accuracy, and to being able to afford the volume of shooting that supports reliably good marksmanship skills. Still, I treat it as a necessary evil; and have striven to identify the major primary accuracy reloading techniques and strictly confine my efforts to only those tasks. I work on a theory that about 1/2MOA is not a bad goal at short range and 2MOA at extreme range is likewise satisfactory. I clearly detach myself from the kind of accuracy-obsessive demands that BR shooters self impose, and prefer to do what I tend to call 'practical marksmanship'.

Greg

 

[Victor N TN]

Re: How and when to weigh h20 volume capacity?

OK OK OK... Yes Greg I'm a benchrest shooter. And yes, sometimes I can be a little obsessive. But I have never blown up a rifle either.

Just joking. I know I'm this way and so do the people close to me. Matter of fact I think you know it too.

 

[Greg Langelius *]

Re: How and when to weigh h20 volume capacity?

Jus' jokin', too...

 

[sandwarrior]

Re: How and when to weigh h20 volume capacity?

gregp,

Measuring the actual volume you use with water is pretty painstaking. You can almost never get the level right looking down in case. Remember the bullet takes up space so filling to the top of the neck isn't useful.

In my opinion, the best thing to do is get quality brass, sorted by manufacturer and type. Then by lot number if you can. Meaning LC field and LC match aren't going to be the same. Neither is Winchester and W-W or WCC.

Someone showed a video on here how one guy sorts brass, after he sorts it all the other ways. He shoots 2 times a much brass as he is going to use. And the ones that end up within the 'cluster' are the ones he uses for match brass.