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Gun Nut's Quiz
Discussion that doesnt fit other Topics
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hunterjoe21
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PostPosted: Fri Aug 17, 2007 6:34 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

12 of 15

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Handloader
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PostPosted: Fri Aug 17, 2007 8:17 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

GroovyJack wrote:
. . . .
If it makes any sense ( no comments from pnut gallery ) , I can understand the concept very easily , but have never actually "seen" any actual proof ..

Similar to the concept , and this one can be shown with a strain gauge , of a pressure pulse at the muzzle .. I forget the whole idea , all my Handloader rags went up in the fire , but Barsness wrote about it a couple years ago .. Doesnt happen all the time , seems until you find the sweet spot , it happens and once you have the supposedly perfect powder/bullet match , it goes away ..

HL , you remember this one ??

Howdy GroovyJack

The primary powder of concern for SPE (Secondary Pressure Excursion was one lable for the phenom) was surplus H4831. Different lots had more variation in burn rate than is normal. Both "Handloader" and "Rifle" magazines (1970s) carried article and speculation about the matter, however, to my recollection, it was never demonstrated in controlled situations and could never be duplicated from claimed loads. Still, something caused all that furor it would seem.

Reduced loads cause powder distribution in the case to vary. It may have been one of the cited reasons for SPE. Yet, the passage of time has opened new avenues of information about how primers actually effect powder charges. Remember the question in the quiz about the front primer tube ignition? It was a product of trying to get standard primers to more thoroughly burn slower powders. Today we know why it didn't really work that way.

Powder doesn't burn from the cartridge base uniformly forward to the base of the bullet. Given proper primer brissilance, powder burns simultaneously from base to front, from front to back, from side to center, from center to side. And all directions in between.

I'll have to do some searching for period articles or any new information on SPE. May take awhile. In the interim, perhaps, the matter is solely academic as most of today's handloaders wouldn't use reduced charges of slow burning powder anyway when far better options are available. My testing was intended to try to produce SPE. Since only 200 rounds total were fired, there is not enough data to support either the pro or con.

Oh well, issues like these only detract from time at the loading bench and I am far behind in my case stuffing efforts. So, I'll put the matter on the back burner to simmer while I address more pertinent things. But, I am still interested in any experiences forum members may have had. PM or post, please, if you have anything to add to the subject.

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Vince
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PostPosted: Fri Aug 17, 2007 9:41 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

The magazine American Handgunner had an article many MANY years ago titled "The 2.8 Grain Bullseye Surprise". It suggested that such a small quantity of a FAST burning powder could act like a cutting charge and consequently destroy case, gun and shooters hand alike. I don't believe that it was ever proven though.

The article was directed towards those pistol target shooters who were trying to reduce their loads to the minimum possible so as to reduce recoil whilst retaining accuracy and allowing quick sight recovery for following shots. I was loading 2.8 gr of Bullseye in a .357 MAG case pushing a 125gr 9mm Conical cast from a RCBS Mould. Never gave me any problems.

Cheers, Vince

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GroovyJack
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PostPosted: Sat Aug 18, 2007 1:24 am    Post subject: Re: Gun Nut's Quiz Reply with quote

HL this was in Handloader in the last couple years , he showed it on paper ..
Actually it makes for some good writing , but in reality the phenomena dont amount to nuthin' ..

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Archie
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Joined: Oct 01, 2007
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Location: Long Beach, PDSR California

PostPosted: Sun Sep 30, 2007 11:06 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

I got them all. I've been reloading for thirty-six years or so.

Yeah, the 'light load of slow powder' theory has never been proven, but there's something to it. There's some bit of information we don't have - or don't recognize - yet.

The other question that's a little 'iffy' is about the .35 Whelen. Late information indicates the Colonel had more to do with it than previously thought. But the heavy lifting went to the accepted inventors.

And I've never had, but still want, a 250-3000 Savage 99.
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Pumpkinslinger
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PostPosted: Mon Oct 01, 2007 1:46 am    Post subject: Re: Gun Nut's Quiz Reply with quote

14 of 15. Missed the one about slow burning powder for cannons, was thinking much bigger cannon!

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ElyBoy
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PostPosted: Mon Oct 01, 2007 1:20 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

15 out of 15 correct.
Too easy and simple.
Third grade stuff for a PRO like me.

Come on---give me something that taxes my BRAIN!!!

Been reloading for sixty years now, and I'm only fifty six.
THAT'S how much more I KNOW than YOU GUYS!!!!
Lame Stupid Nananana Nananana Nananana You are stupid You are stupid You are stupid

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Bushmaster
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PostPosted: Mon Oct 01, 2007 1:41 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

"Come on---give me something that taxes my BRAIN"...Like finding it? Evil Devil Fencing ROFL ROFL Poke

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ElyBoy
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PostPosted: Mon Oct 01, 2007 2:04 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

Very Happy Very Happy Very Happy

Eric

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sniper
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PostPosted: Sat Oct 06, 2007 5:46 am    Post subject: Re: Gun Nut's Quiz Reply with quote

14 out of 15 Sad ----I didn't know that a .700 was commercially available. Drat! Leave it to the Brits! Very Happy
S E E has been the cause of lots of discussion, but from what I recall, while there are some reasonable-sounding theories, NOBODY can say for sure what causes it.

In my youth, I used ~2.5 gr. Unique/158gr. cast SWC in my 357 Maggie, with the result that a little kid at the range that day asked his mom; "Why is that man pounding on his gun?" (Driving the stuck bullet out!) Embarassed Very Happy
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con10der
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PostPosted: Thu Oct 18, 2007 1:11 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

13 out of 15 i missed the british question and i forget what the other was
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Deleted_User_2665
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PostPosted: Fri Oct 19, 2007 3:30 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

Your score is: 15 out of 15
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d_hoffman
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PostPosted: Fri Oct 19, 2007 11:42 pm    Post subject: Re: Gun Nut's Quiz Reply with quote

14/15, missed #7 or #8. Oh well doesn't really matter.

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K.W.
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PostPosted: Sun Oct 21, 2007 9:08 am    Post subject: Re: Gun Nut's Quiz Reply with quote

It was easy, but I had only 13 / 15 because I cant read so god in English. Question aboat .35 Wheelen, I did´nt knew.
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glockman55
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PostPosted: Mon Oct 22, 2007 7:58 am    Post subject: Re: Gun Nut's Quiz Reply with quote

9 out of 15, I better stick to factory ammo. I have no business trying to hand load at this time.. Very Happy

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