Almost had my first case separation

[WYO300RUM]

I'm using rcbs fl dies for 2 different 300rum barrels... brass growth under 5 thou. per firing (more like 3) fl sizing fully screwed down
seems like the chamber was cut a bit deep and partial fl would help... Do you have the ability to neck up a bit then back down for a false shoulder? That would prolly doubly your shot count before you have issues. I'm starting to do this a bit more lately on a couple of my toys

That could be a good idea. With factory barrel the only thing I had problem with was with Nosler cases and lose primer pockets after 3rd firing. Never bought again. Never had problems with Rem. cases. I may go back to them. I have a lot of new. Have bought ADG from factory and Gunwerks from 1/2 mi. down the street. Same brass. I've also bought their once fired brass in 300 RUM, 300 Wi mag, 7 Rem mag , 6.5 PRC and 6.5 Creed. Never had a problem. Use more of the Gunwerks so I can't tell you a difference between them and ADG.