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A Tale Of Two Primers (Read 25759 times)

MI-shooter Moderator Offline Posts: 700 Location: SE Michigan Joined: Apr 18^th, 2004	Re: A Tale Of Two Primers Reply #30 - Jun 29^th, 2015 at 10:37pm	Print Post
	Gentlemen There has been way too much name calling from both sides which must end and end now. Remember it takes two. Please....everyone....take a big deep breath and get back to the original topic. This thread was edited to remove the offending posts. If it continues, the entire thread will be DELETED. Please abide by the forum rules. Ed Moderator


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John Boy Ex Member	Re: A Tale Of Two Primers Reply #31 - Jun 29^th, 2015 at 11:10pm	Print Post
	Quote: How do we compare the flame intensity & pattern between the Fed 205-M & the 205-MAR? Okey, Data mining on the Internet - there is no flame picture of the MAR. It's unknown I tried Federal's MSDS sheet for primers and nothing specific. The one fact I do know about primers is ... if the compound includes glass or aluminum - the flame will look like the tail of a comet ... producing substantial brisance Edit: From my BPCR primer references, here's an article that gives an incite to various primers and their pressures ... (You need to *Login* or *Register* to view media files and links)
	« Last Edit: Jun 29^th, 2015 at 11:51pm by »

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JerryH Frequent Elocutionist Offline ASSRA Member #10876 Posts: 1323 Location: Easton, CA Joined: Nov 9^th, 2014	Re: A Tale Of Two Primers Reply #32 - Jun 30^th, 2015 at 12:13am	Print Post
	John Boy, A very interesting read, to say the least. Thanks for supplying the link. JerryH

	I'm not a complete idiot, some of my parts are missing.
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kkid66 Full Member Offline Posts: 186 Location: central tx Joined: Jun 4^th, 2014	Re: A Tale Of Two Primers Reply #33 - Jun 30^th, 2015 at 8:32am	Print Post
	A big thank you for all the info to Jerry H and John Boy. Be sure to turn off the ceiling fan before weighing primers. Do remember David Tubb weighing complete loaded rounds and matching them together.


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Litl Red Ex Member	Re: A Tale Of Two Primers Reply #34 - Jun 30^th, 2015 at 9:06am	Print Post
	Humorously, John Boy's linked article by some seriously qualified authorities gives some insight into the quality of components. Standard brass checked out to be TWICE as uniform as the premium brass chosen for use in their tests. Makes you wish they'd included comparison results of the two batches, if only to clarify the impact on their test of something they felt needed to be reported. That also provides insight into how honestly our industry markets their products. Or how good their quality assurance is. Test results and tests themselves certainly provide entertainment don't they.


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John Boy Ex Member	Re: A Tale Of Two Primers Reply #35 - Jun 30^th, 2015 at 10:17am	Print Post
	In the article, there is a quote: Quote: the other hypothesis is (in the words of German Salazar ), “accuracy is more easily found when the influence of the primer on the overall pressure of the load is minimized .”(3) German writes articles for (You need to *Login* or *Register* to view media files and links) and is a technical ballistics gun crank personified. I started chasing low brisance (pressure) primers for shooting BPCR long range. Black powder does not detonate like smokeless. It deflagurates (gases ignite the whole powder column at once) and low pressure primers are key to excellent deflaguration or mediocre. Why am I digressing? * I have 12 BPCR cases on my bench as a To Do with stainless steel sleeves in the primer pockets to reduce the pockets from LR to use SR or SP primers. Eons ago, BP cases had SR pockets but shooters whined these SR primers would not ignite smokeless powder when it came on the market. * With SR or SP primers in the modified cases - shot over a Chrono - my intent is to determine if Avg velocity increases & SD's reduce when compared to BPCR caliber cases with large pockets - both with the same powder charge


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kkid66 Full Member Offline Posts: 186 Location: central tx Joined: Jun 4^th, 2014	Re: A Tale Of Two Primers Reply #36 - Jun 30^th, 2015 at 10:32am	Print Post
	John Boy, I have reduced flash holes from .080 down to .060 but they were a little raged so I drilled them out to .065 with no improvement shown. Talked to a master shooter that has had great sucess with .060 flash holes and found what I was doing wrong- will test when time allows. Would love to try some small primer inserts someday.


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semtav Full Member Offline Posts: 102 Joined: Oct 2^nd, 2009	Re: A Tale Of Two Primers Reply #37 - Jul 1^st, 2015 at 3:24pm	Print Post
	JLouis wrote on Jun 29^th, 2015 at 12:39pm: During the preferred primer shortage did anyone happen to give the Small Pistol Primers a try? JLouis Curt Hardcastle made some inserts and I picked some up at last years Quigley. A little testing didn't show any real improvements so I quit. but I didn't really give it a serious try. A lot of my loads like GM155M magnum pistol primer, with the BR2 a close second. I've never had luck with any load Ive tested with Remington 9 1/2s . A chart on another site mite explain why. (You need to *Login* or *Register* to view media files and links)


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JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: A Tale Of Two Primers Reply #38 - Jul 1^st, 2015 at 4:53pm	Print Post
	Interesting information thanks for sharing Semtav. German has some interesting articles on primer testing that some of you might find interesting. Click on the below link and scroll down to Primers. You might find his other articles interesting as well, I have read them all and have I picked up bits and pieces of useful information that I can apply to my type of shooting from some and simply enjoyed reading the others. (You need to *Login* or *Register* to view media files and links) JLouis

	" It Is Better To Now Have Been A Has Been Than A Never Was Or A Wanna Be "
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desert-dude Senior Forum Member Offline Posts: 439 Location: Selah Joined: Jul 23^rd, 2013	Re: A Tale Of Two Primers Reply #39 - Jul 1^st, 2015 at 10:52pm	Print Post
	Just to muddy the waters some: There is some data ( maybe "Precision Shooting") 10 years back??? Which indicated that berdan primed .308 (?) was significantly more accurate than boxer primed. Significantly, in this case means you were trying to wring out the last little bit of accuracy. Clearly YMMV


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John Boy Ex Member	Re: A Tale Of Two Primers Reply #40 - Jul 2^nd, 2015 at 12:19am	Print Post
	I missed this article from German about primer hole sizes but check out the brisance of the Wolf SR 223 primers (You need to *Login* or *Register* to view media files and links) Midway has them ... (You need to *Login* or *Register* to view media files and links) And his SR test of various primers ... (You need to *Login* or *Register* to view media files and links)


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