Looking for an update on the Frontier ammo. I have researched and googled but haven’t found anything showing that the problems are still present, I can’t find any new lot numbers. I picked up two boxes yesterday, prior to researching this ammo. 1 box of 50/rnd 55gr X193 and 1 20rnd box of 75gr “match” bullet. I have the lot numbers for them. Also is it still an issue to shoot through 5.56 or .223 wylde chamber? I “read” that one or the other causes an issue....no idea.