Hi guys, i'm new here. I apologize for my bad english in advance. I recently got ahold of some cheap 180 grs ammo from PPU and since it's the only 180 grs option in my country, i bought it. I wanted to plink with some light 180 grs screamers for a long time. This ammo has some serious velocity. According to data, it's 1750 fps and 1250 ft lbs out of 8" barrel. So i said to myself why not. But now when i checked the cartridges, i'm not sure is it safe to shoot these in my revolvers. The ammo looks old, it has a strange circled primer sealant (which was used on old corrosive surplus ammo), the brand markings on the primer "PPU" is wrote in cyrillic alphabet (which means they aren't made for US market) and the inside box is made of cheap carboard, instead of plastic, like in the most of ammo. It says on the box anti-corrosive but i'm not sure i should gamble with these in my 629 and TRB. Plus, there's no CIP (SAAMI equivalent) proof mark on the box and the box logo is the older one. The seller said he got it a year back, but who knows how old is the actual production. What's your take on these, guys?