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Brass Preparation And Management By John W. Lewis

 
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  #1  
Old 05-17-2009, 08:55 PM
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Brass Preparation And Management By John W. Lewis

This is a thread for discussion of the article, Brass Preparation And Management By John W. Lewis. Here you can ask questions or make comments about the article.
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Old 05-20-2009, 05:15 AM
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Re: Brass Preparation And Management By John W. Lewis

Hi John,Thank you for the article i found some good ideas in there.Did you find that running your brass through the ring die affected the primer pocket of your brass? I have quite a few cases with primer pockets that is starting to feel loose and was wondering if the ring die might be the solution to tighten them up again?How do you keep track of how many times you have used your brass? in theory this should be easy, but i found that i keep mixing up my brass.I might get a new batch of brass and start by loading some for load development then i might want to load these same cases again (now that they're fireformed i should get better accuracy) then i might load a batch of 50 and only use 35 for competition etc etc. At the end of the day if i loaded a batch and they all came back fired it would be easy, somehow it just always ends up scrambled.The best method I saw thus far is one guy that uses a small file to notch the rim of each case every time it's loaded and that way it is easy to sort them and keep track of what it's been up to.Any sugestions??
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Old 05-20-2009, 02:39 PM
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Re: Brass Preparation And Management By John W. Lewis

Interesting article BUT so is the one in the new Handloader where a known accurate Cooper 22-250 (1/2 MOA) Was tried with different brands of brass, with and w/o fancy prep, even mixing brands! The result was "no result". Remington factory brass "out of the box" shot the best although it had among the highest weight variation and neck thickness variation.
IMO, time spent sending bullets downrange that shoot 1/2 MOA groups will make you a better shooter than spending hours in brass prep to get .4 MOA groups.
Even a 1 MOA rifle will kill any big game within the ranges most of us actually do most of our hunting at.
I'd rather be wearing out a barrel than bending over the loading bench. To each his own.
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Old 05-20-2009, 10:14 PM
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Re: Brass Preparation And Management By John W. Lewis

While I do feel that Mr. Lewis goes a wee bit further than I care to with his brass prep, he does have at least one Nat'l record to go with it. I think a wee bit of luck was involved (he has admitted as much), but to paraphrase the saying, 'fortune favors the prepared'.

I'm curious... which issue (month/number) of Handloader was this article you mention in? I just found that they offer online subscriptions, and I'd like to find a back-issue if possible.
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Old 05-21-2009, 08:17 AM
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Re: Brass Preparation And Management By John W. Lewis

I think it was the current issue. Call Wolfe publishing in AZ to be sure.
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Old 05-21-2009, 08:47 PM
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Re: Brass Preparation And Management By John W. Lewis

Found it in the June issue - it was a Cooper .223, not a .22-250 which was screwing up my search.

I'll give the guy credit, he put more work into it than most authors I see who claim 'no difference' between brand x, y or z, or method a, b and c. And I do agree with him to a degree... unless you are really bent on wringing the absolute mostest from your gun and loads, a lot of the twiddly stuff falls into the 'feel-good' category.

From a strictly technical perspective... the sample sizes are a bit small. Then again, time and money being finite, I can't entirely fault him there either. The problem is, that as close as the results are, you'd need a *lot* bigger sample size to say (with mathematical confidence) that there really is or isn't a difference, and that the overlap wasn't simply due to chance. The smaller the difference, the bigger the sample required generally speaking.

FWIW, I did a test (for a final paper in my intro statistics class) last year on case weight vs. case volume vs. muzzle velocity in a .308 Win, and *did* find a correlation between weight and muzzle velocity. Albeit a *slight* one, but still statistically significant nonetheless.

I do want to get back to that project and spend some time working with more aspects of the cases - weight and volume and runout specifically. Something I have wondered about is whether different parameters would have noticeably more or less effect in particular chamberings - say .223 Rem vs. 6mm BR vs. .308 Win vs. 6.5-284, etc. The tests start getting complicated, at that point ;)

I still say that I'm not going to tell Mr. Lewis that he's full of hot air, even if I don't subscribe to quite all that he does to his brass. We need more people willing to go out on a limb and say "This is how I do it" and weather the flak that follows.

Monte
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Old 08-02-2009, 02:27 PM
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Re: Brass Preparation And Management By John W. Lewis

Monte, In your response you mentioned :

FWIW, I did a test (for a final paper in my intro statistics class) last year on case weight vs. case volume vs. muzzle velocity in a .308 Win, and *did* find a correlation between weight and muzzle velocity. Albeit a *slight* one, but still statistically significant nonetheless.

Could you elaborate on what you feel best describes the variable 'weight' in your tests, please? Is it empty cartridge weight, projectile weight, or bullet weight or ?

thanks,
chuck...
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