This is a 5.56 factory load: frontier 75gr bthp. Does this mark on the brass casing mean that it's having pressure issues? The mark on the right case isn't as bad. I planned on starting to reload for this rifle but if its having weird pressure issues with factory ammo I'll get a new barrel. I go/no go gaged with both passing. Its an 18" ba .223 wylde spr premium series barrel, bcm bcg. Suppressed with a oss hx HD 7.62 can.
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