markr6754
Member
I was prepping brass from my last outing, where I also fired my newly completed AR-9. I'm pretty sure that these pieces came from that pistol, as the 9mm handguns we brought have seen multiple outings without any unusual primer markings.
These cases, the FC headstamps, were loaded with 124gr HiTek coated bullets over 4.0gr of Hi-Skor 700-X, at 1.070". That's a bit deeper than I wanted to seat them, but that's the problem I run into with these bullets. Otherwise, they don't fit most of my barrels. I didn't plunk my Rosco barrel in my AR9. These are Winchester WSP primers.
The first picture shows several of these cases against one GFL case, a factory 115 gr Fiocchi round. I shot 50 rounds of new factory 115 gr Fiocchi Range Dynamics, and all of them have "normal" primer strike marks as in the sample shown.
The 3rd photo shows that the 5 FC headstamp cases with pierced primers, as indicated by the light shining through in the last. That's one of the 5 before I decapped it. Obviously, another 50 or so cases did not show anything unusual...or not unusual enough to catch my eye.
I used an Odin Works Enhanced 9mm BCG with a standard carbine spring and an Odin Works adjustable buffer loaded to 5.4oz for 9mm, per their instructions. This was the first time out for this configuration.
I'd appreciate any thoughts on things to look at to ensure that this never happens again.
These cases, the FC headstamps, were loaded with 124gr HiTek coated bullets over 4.0gr of Hi-Skor 700-X, at 1.070". That's a bit deeper than I wanted to seat them, but that's the problem I run into with these bullets. Otherwise, they don't fit most of my barrels. I didn't plunk my Rosco barrel in my AR9. These are Winchester WSP primers.
The first picture shows several of these cases against one GFL case, a factory 115 gr Fiocchi round. I shot 50 rounds of new factory 115 gr Fiocchi Range Dynamics, and all of them have "normal" primer strike marks as in the sample shown.
The 3rd photo shows that the 5 FC headstamp cases with pierced primers, as indicated by the light shining through in the last. That's one of the 5 before I decapped it. Obviously, another 50 or so cases did not show anything unusual...or not unusual enough to catch my eye.
I used an Odin Works Enhanced 9mm BCG with a standard carbine spring and an Odin Works adjustable buffer loaded to 5.4oz for 9mm, per their instructions. This was the first time out for this configuration.
I'd appreciate any thoughts on things to look at to ensure that this never happens again.