Minimum force required to ignite the hardest factory small pistol (9mm) primers?


Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Ammunition & Reloading > Minimum force required to ignite the hardest factory small pistol (9mm) primers?

Reply
 
LinkBack Thread Tools Display Modes
Old 05-03-2013, 03:52 PM   #1
Feedback Score: 0 reviews
 
Join Date: Dec 2011
Location: South Carolina
Posts: 88
Liked 3 Times on 2 Posts

Default Minimum force required to ignite the hardest factory small pistol (9mm) primers?

Hello all,

It has been a while since posting on this forum, but I have had an intriguing thought and figured I would ask around and see what I can discover.

I'm not a hand loader, but I'm assuming "small pistol primers" are good for 9mm Luger, and that's what I'm specifically referring to in this question.

To address the problem, there are a few things I am interested in knowing.

First, what are the hardest small pistol primers found on the shelves in factory ammunition (by hardest I mean requiring the most striking force to ignite)? I've always been told CCI.

Second, what is the minimum force required to ignite said primers reliably?

Lastly, how can I calculate the striking force of a firing pin in a Beretta 92FS?

The reason I found this interesting is because I have a Beretta 92FS that I doctored up, so to speak. I put a lighter "D" main spring in (can't recall right away what the actual rating was) and a skeletonized hammer (unsure of the weight at the moment). I have shot a few hundred hand loads with CCI primers through it, and I'm more than confident that light primer strikes will not be an issue.

However, I am mainly interested in the numbers, just out of curiosity. If any engineers or mathmaticians out there wants to explain these questions to me in mathspeak, I would be very grateful.

Gracias



__________________
comeback_kid is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 05-03-2013, 07:44 PM   #2
Moderator
FTF_MODERATOR.png
Feedback Score: 1 reviews
 
robocop10mm's Avatar
 
Join Date: Jul 2007
Location: Austin,Texas, by God!!
Posts: 10,059
Liked 2731 Times on 1430 Posts
Likes Given: 230

Default

I can tell you that on a Smith and Wesson revolver in .38 Spl it requires a 3 1/2 pound main spring. The .357 Mag requires 3 3/4 pounds for reliable ignition. I do not know how that translates into actual striking force, but gives you something.

And yes, CCI primers are considered the hardest primers available.

__________________

In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball

robocop10mm is offline  
 
Reply With Quote
Old 05-04-2013, 01:56 PM   #3
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,563
Liked 5651 Times on 2954 Posts
Likes Given: 372

Default

Your going to need to know the mass of the firing pin. The area of the tip of the pin that strikes the primer. How much area of the pin that rubs against the firing pin channel. How much firing pin return spring tension you have and the friction factors of the hammer strut, hammer and hammer pivot pin. And finally how strong the firing pin spring is.

I prefer going out and shooting and if my gun sets primers off i call it a day.

The reason the 92fs has a very strong hammer spring is it has to hold up to field military conditions where the gun may need to be fired with a dirty firing pin channel. That extra hammer force could be needed.

I leave my 92's fp springs bone stock

__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
locutus Likes This 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
looking for small pistol primers Dave103176 Massachusetts Gun Forum 1 04-24-2013 01:17 AM
small pistol primers magprimer Ammunition & Reloading 8 04-18-2013 04:39 PM
Heat required to ignite standard cartridge's primer jaketodd General Handgun Discussion 2 08-15-2011 02:59 AM
What is considered a large pistol verses a small pistol for primers? BAMonty Ammunition & Reloading 9 06-27-2010 09:12 AM
midway has small pistol primers! tiberius10721 Ammunition & Reloading 2 12-24-2009 11:48 AM