I've experienced it in the 143's, didn't notice them being any more brittle or any broken though. Performed just fine and consistent on a couple mule deer bucks this fall.
This was a 10 shot group that consisted of 5 pcs of prepped brass with tight necks, 5 pcs that had been loaded and had bullets pulled to diagnose an issue, 5 pulled bullets from old lot (brighter tip), and 5 from new lot (dark). Zero shifted a bit because I pulled and remounted scope bases to add a recoil pin.
