Primer 'heat' chart

09 February 2002, 02:57

Dutch

Do a search in the archives, there was one listed here a couple of months ago.

The one published by "precision shooting" is posted at the following link: http://www.prfelr0.f2s.com/prfelr0/ click on primer 1 and primer2. HTH, Dutch.

09 February 2002, 04:14

1894

Dutch,

Doesn't appear to work. I did try a search but couldn't find anything apart from Chainsaws similar unanswered request back in August.

09 February 2002, 06:03

Dutch

Hmm, works fine for me if I click on the link above????????

These are the links to the two pages, directly.

http://www.prfelr0.f2s.com/prfelr0/primers1.jpg

http://www.prfelr0.f2s.com/prfelr0/primers2.jpg

I also had no problem finding the thread in the archives.

http://www.serveroptions.com/ubb/Forum6/HTML/003275.html

HTH, Dutch.

[This message has been edited by Dutch (edited 02-08-2002).]

09 February 2002, 06:53

<2ndaryexplosioneffect>

OK guys, your over my head. Itï¿½s hard for me to really make any conclusion here. It looks to me like peak chamber pressure is the only value that changed appreciably.

Now, I tend to read pressure signs from my primers first. Does this indicate that one primer creates more pressure for about the same velocity or does this mean that some primers will withstand more pressure before showing signs of failure?

09 February 2002, 09:39

R-WEST

2ndary -
Check out http://www.riflemagazine.com/magazine/article.cfm?tocid=654&id=50 to get some insight from Ross Seyfried on using primers as a pressure check. He says "The most commonly used is a visual impression of primers. Unfortunately it is also the most unreliable."

Almost forgot, Saeed has some data too http://www.accuratereloading.com/primer.html

R-WEST

------------------
"it is up to God to judge these terrorists; it is up to us to arrange their meeting" Gen. Norman Schwarzkopf

[This message has been edited by R-WEST (edited 02-09-2002).]

09 February 2002, 10:26

<2ndaryexplosioneffect>

Yaï¿½know guys this forum should have a must read section with this stuff in it before you could get on. Extremely enlightening, and helpful in many ways. Now I donï¿½t have to wear loafers to the range so I can beat the bolt open :-()

09 February 2002, 10:32

Dutch

Secondary, the Precision shooting data indicates that some primers create much higher pressure than others, without a commensurate increase in velocity, yes.

Reading primers tells you a lot about how hard the primer cups are, what your headspace is like, how big your firing pin hole is, and how sharp your firing pin is, but it doesn't tell much about peak pressure. FWIW, Dutch.

09 February 2002, 12:49

Major Caliber

I used CCI large pistol magnum primers in 30-30 and 30-06 before. They worked great, I got them really cheap from a commercial reloader that was overstocked, CCI offered him primers for alomst nothing, if he ordered them by the truckload, so he would sell them cheap to some of his regular customers.

09 February 2002, 13:03

Ol` Joe

GFS1200, Pistol primers are not designed to handle rifle pressure. I`m sure they`ll work to ignite your powder charge but they may cause you grief. I reccommend staying with rifle primers in cartridges designed around them. I`d hate to hear of anyone injuring their self over a few pennies savings.

09 February 2002, 14:02

Major Caliber

quote:
Originally posted by Ol` Joe:
GFS1200, Pistol primers are not designed to handle rifle pressure. I`m sure they`ll work to ignite your powder charge but they may cause you grief. I reccommend staying with rifle primers in cartridges designed around them. I`d hate to hear of anyone injuring their self over a few pennies savings.

Yeah yeah yeah, and matchkings won't kill a deer. What is the pressure of a .44mag? It's higher than 30-30, and not much less than the 30-06. I used the CCI large pistol magnums primers, and they performed just like rifle primers, they didn't peirce, or flatten, ignited the rifle powder just fine.

09 February 2002, 14:14

Major Caliber

I've also used rifle primers in .44mag.

09 February 2002, 14:41

Ol` Joe

GFS, I`m simply trying to caution you, no flame intended. The VihtaVuori #2 lists the max pressure for the cartridges you mention as follows:
44 mag - 36000 psi/40000cup
30/30 - 42000psi/38000cup
30-06 - 60000psi/50000cup
IMHO for a few cents the proper primers are worth the money. This is just my view, safty should be the #1 criterion for our loads.
If you look at the thread on Matchkings you`ll notice I`m not in that spat. There is no question game has been taken with a lot of things that aren`t designed for them. BUT there is no danger to the shooter. Iffy components on the other hand may or may not cause the shooter problems, why chance it?
As I said, just my opinion.....