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Reloading Techniques For Reloading


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Primer Pockets ?

 
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  #15  
Old 09-14-2013, 12:23 AM
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Re: Primer Pockets ?

Just because a primer pocket gets loose, that doesn't have $hit to do with abuse of cases or any rifle per say. Not all brass is made equal, actually everyone favorite (lapua) has less tin and chromium than lesser brands and is usually 77% copper and 23% zinc, went cartridge brass should ideally be 75% copper 24% zinc .5% chromium and .5% tin, like winchester for instance, it isn't very uniform but its as tough as nails. Also the locking lugs will let you know when its time to step up to a bigger case, when they start gualding up, then you're damaging the rifle, other than that if a manufacterer chambers a 65k psi cartridge, you can bet your ***** the rifle was proof tested to double that pressure. This also means that all europeans are idiots as well, since they run some of the same cartridges we have 15-20% higher in pressure than we do. 338lm for example, they run it just shy of 70k psi we cut it back under 65k. Primers are the most useless way to check for high pressure than any other method.
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  #16  
Old 09-14-2013, 07:30 AM
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Re: Primer Pockets ?

Quote:
Originally Posted by Greg Duerr View Post
That's the fun of the Ackley's not know where you can go...................the results can be hard on cases but you never know where you can go until you try...................Ive had 100gr bullets @3350 but then ended up at 3140. There is pro's and con's

Hi Greg -

I don't fully subscribe to this way of thinking. I would say that Ackley's deserve additional respect and a conservative approach because they have bot been as fully studied in a test environment as SAAMI cartridges. The idea that you don't know where you can go is somewhat of a dangerous one - if you are 300fps over book loads for .243 (and unless you have a super long barrel or other contributing factor) I would be nervous. Beating up brass is one thing, continuously beating on an action is another . . .

I am not pretending to be an expert, just saying use some caution and make sure you are safe. I agree fully with Lefty7mmSTW - if you need to push beyond the tested safe range of a given cartridge to get the performance you need in an application, look to take a step up. I don't think this is a "compensating" type thing, just a generally good practice. . .
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  #17  
Old 09-14-2013, 07:38 AM
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Re: Primer Pockets ?

Quote:
Originally Posted by backwoods83 View Post
Just because a primer pocket gets loose, that doesn't have $hit to do with abuse of cases or any rifle per say .
Uhh, unless I am missing something primer pockets getting loose have everything to do with the abuse of a case. By definition . . .

In an earlier post, you talked about a friend of yours that built a special jig to tighten primer pockets, and then still needed to seal them with nail polish to avoid gas leaks/bolt face etching. The context of the post is that he runs high overpressure and that is why this is necessary.

While it may work, I don't think that you can make a case that it is best practice, and the experience of your friend does NOT mean that it is safe in others' equipment. Everyone is ultimately responsible for their own decisions, but it is worth keeping in mind that some people take what they read on these sites at face value (as a best practice, as highly researched, etc).

For me, a special jig and sealing primer pockets to avoid bolt etch are waaaaay outside my comfort zone. I subscribe to Lefty's idea of moving up to a cartridge that does what I want within specifications that have been tested empirically as safe.
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  #18  
Old 09-14-2013, 02:43 PM
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Re: Primer Pockets ?

Do what you want, I'm not telling anyone one to listen to me. But try reloading hornady cases from superformance ammo and see how tight they are, and that is commercial ammo. Once again it is up to the individual, but I will say, "there is nothing wrong with tightening primer pockets as long as there isn't anything else wrong with the casing."
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  #19  
Old 09-15-2013, 05:35 PM
RTK RTK is offline
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Re: Primer Pockets ?

Quote:
Originally Posted by backwoods83 View Post
. Primers are the most useless way to check for high pressure than any other method.
What other methods do you feel are better? Hard bolt lift, ejector marks??
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  #20  
Old 09-15-2013, 06:27 PM
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Re: Primer Pockets ?

Use a micrometer on the case head. Maybe I'm the idiot here that realizes that brass is malleable/ductile, and that if the shoulder, case body, and neck expand upon firing that eventually the primer pocket will as well, but I don't hear any bickering about resizing cases, so why all the BS about resizing primer pockets if that's all that's wrong with them. Just because the pocket is loose doesn't mean the web is busted.
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  #21  
Old 09-15-2013, 06:55 PM
RTK RTK is offline
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Re: Primer Pockets ?

I'm wasn't bickering about it just asking. I haven't had too much trouble with loose primer pockets in the past and after about 10+ reloading if a few primer pockets get loose I usually toss them. With the availability of brass now, I might have to start looking into it.
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