Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Does anyone know of a Firing pin info for 50 BMG ?
Firing pin travel?
Firing pin tip diameter?
Firing pin protrusion?
Travel is NOT what you really need... Striking force is. I don't recall where I got this info, but I found 100in/oz as a spec. for one of the .50BMG primers (may have been from one of the GD guys, may have been some idiot on the web). I used that in my BMG and have had ZERO FTF, ZERO hang-fires and ZERO pierced primers. I can't say that the number is right or wrong, but it has worked for me.
I looked at about a dozen .50BMGs and found them to be using a striker diameter of between .075" and .090" I decided to take an average and settled on .080". This is approximately what most I looked at were using. Again I have had ZERO issues.
Again I compared MANY different .50 BMGs as well as other rifles. I found that generally protrusion was roughly equal to striker diameter. Based on MY findings I went with .080".
Again I can NOT say that any of this is much more than "by guess and by golly". But it has worked for me. Use at your own risk. I still consider my .50BMG prototype / experimental firearm.
According to USGI specs for ammo acceptance testing using a Universal Receiver: Firing Pin Protrusion is .074" to .082", Firing Pin Indent is .020" to .025" in a SAMMI spec copper cylinder. Firing pin diameter is .077" to .078" with a nose radius of .040" to .045". This will ensure ignition of USGI Ammo.
Notice
This website or its third-party tools process personal data (e.g. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. To learn more, please refer to the cookie policy. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise.