Primer showdown: WOLF vs. CCI #41

[MegademiC]

What COAL are you guys at with each load?

[markm]

I set my die to 2.25 for everything OTM.

[MegademiC]

I set my die to 2.25 for everything OTM.

2 rifles shot the loads fine (even supressed) a third one had a few bad swipes and one popped primer unsupressed.

[markm]

For us, every gun shows some swiping.

[MegademiC]

For us, every gun shows some swiping.

2.20" on the 69gr.

[m1a_scoutguy]

For us, every gun shows some swiping.

Sorry for the silly question & actually tried to look it up, what the hell does swiping mean or what is it? Thanks guys.

[B52U]

Sorry for the silly question & actually tried to look it up, what the hell does swiping mean or what is it? Thanks guys.

It's a possible sign for overpressure, where the brass flows into the ejector hole during firing and makes a swipe mark on the case head as the brass ejects. If you reload the same brass enough it can erase the markings on the case head. Pretty wild.

It's actually common on true 5.56 pressure ammo like M193.

[markm]

It's the shiney marks on the case heads in the pic above.

[1168]

Its worth noting that while swipes are recognized as a pressure sign, they can also be caused by an ill machined ejector pin hole, and that gun might swipe on all loads. I’ve also heard of swipes being caused by excess headspace, but I’m not sure about that one.

[Pappabear]

Your running 69gr right? I remember when I started the current load I tried 69, 75, and 77gr. 69 pressure spike on the low end of 556 data. The 75's blew the primer out at the top end of 223 data. The 77gr I've never had an issue.

Sent from my SM-S906U using Tapatalk

That is wild. Ever figure that out?
PB