So I have had an unusual problem with my Rem 597.
Shooting at the range the other day and some kind of backblast occurred, which caused the 30 round plastic magazine to explode apart.
After inspection there appeared to be nothing wrong with the weapon, so we continued to fire. Short time later, the same backblast occurred but this time, it blew apart a 10 round metal mag.
Closer inspection of the spent casings showed some kind of rupture out the back of the casing.
Three things stood out on:
1) there was the bite above and to the right of the primer strike
2) then the obvious holes to the right and below.
3) finally the primer imprint is way deeper than the norm
Ammo was .22 LR 36 gr "Winchester 555 Rounds" brand....
Any thoughts or suggestions on the cause? I have seen plenty of issues with the mag feed, but not too many
Image of casings:
Also, the effect was similar to what this guy had, but the rounds were not stuck in the pipe like his was in the end......:
http://www.youtube.com/watch?v=F7kTyaP-FUE&feature=BFa&list=HL1310962564&index=6
Shooting at the range the other day and some kind of backblast occurred, which caused the 30 round plastic magazine to explode apart.
After inspection there appeared to be nothing wrong with the weapon, so we continued to fire. Short time later, the same backblast occurred but this time, it blew apart a 10 round metal mag.
Closer inspection of the spent casings showed some kind of rupture out the back of the casing.
Three things stood out on:
1) there was the bite above and to the right of the primer strike
2) then the obvious holes to the right and below.
3) finally the primer imprint is way deeper than the norm
Ammo was .22 LR 36 gr "Winchester 555 Rounds" brand....
Any thoughts or suggestions on the cause? I have seen plenty of issues with the mag feed, but not too many
Image of casings:

Also, the effect was similar to what this guy had, but the rounds were not stuck in the pipe like his was in the end......:
http://www.youtube.com/watch?v=F7kTyaP-FUE&feature=BFa&list=HL1310962564&index=6