RavenVT100
Member
- Joined
- Aug 18, 2004
- Messages
- 1,107
I have an SPR-style build that uses a Bushmaster bolt and barrel with a 5.56 chamber.
When I originally purchased the bolt and barrel from Bushmaster, I requested that they headspace it for me, which they claim they did on my invoice.
I am having issues with pierced primers now with this rifle. Yesterday I fired some handloads followed by a string of eight XM193. Four of the handloads, out of 50, were retrieved with sooted, pierced primers. My firing pin is now pitted and needs to be replaced.
Could this be a sign of excess headspace, or is it more likely to be a firing pin protrusion issue combined with insufficient primer cup thickness? I was using Winchester WSR primers. I would like everyone's input before I go buy headspace gauges. I had trusted that Bushmaster would have spaced this for me; I am hoping that they did.
When I originally purchased the bolt and barrel from Bushmaster, I requested that they headspace it for me, which they claim they did on my invoice.
I am having issues with pierced primers now with this rifle. Yesterday I fired some handloads followed by a string of eight XM193. Four of the handloads, out of 50, were retrieved with sooted, pierced primers. My firing pin is now pitted and needs to be replaced.
Could this be a sign of excess headspace, or is it more likely to be a firing pin protrusion issue combined with insufficient primer cup thickness? I was using Winchester WSR primers. I would like everyone's input before I go buy headspace gauges. I had trusted that Bushmaster would have spaced this for me; I am hoping that they did.